If Juanita answered 34 out of 40 questions correctly then her grade as a percent is 85%.
We can find Juanita's grade as a percent by dividing the number of questions she answered correctly by the total number of questions and then multiplying by 100.
This gives: Percentage = (Number of correct answers / Total number of questions) × 100.
Therefore, Percentage = (34 / 40) × 100
= 0.85 × 100= 85%
We don't need to round in this case since the percentage is a whole number. Therefore, Juanita's grade as a percent is 85%.
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Solve the equation.
5/6x=4- 11/12x
Solution set is
[tex]\cfrac{5}{6}x=4-\cfrac{11}{12}x\implies \stackrel{\textit{multplying both sides by }\stackrel{LCD}{12}}{12\left( \cfrac{5}{6}x \right)=12\left( 4-\cfrac{11}{12}x \right)}\implies 10x=48-11x \\\\\\ 21x=48\implies x=\cfrac{48}{21}\implies x=\cfrac{16}{7}\implies x=2\frac{2}{7}[/tex]
Write and solve an inequality to find the possible values of x.
An inequality to find the possible values of x is: D. x > 7.
What is the triangle inequality theorem?In Euclidean geometry, the Triangle Inequality Theorem is represented by this mathematical expression:
b - c < n < b + c
Where:
n, b, and c represent the side lengths of this triangle.
By using the law of sine law, the value of x can be determined as follows;
28/sin(100°) = 20/sin(α)
sin(α) = sin(100°) × 20/28
α = arcsin(0.7034) = 44.70°
β = 180° - 110° - 44.70°
β = 25.3°
x/sin(β) = 28/sin(100°)
x = 28/sin(100°) × sin(25.3°)
x = 12.15
Based on the Triangle Inequality Theorem, we have:
20 + 12.15 > (5x - 7)
32.15 > (5x - 7)
5x > 39.15
x > 7.83
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Nina and Ryan each ran at a constant speed for a 100-meter race. Each runner’s distance for the same section of the race is displayed on the left. Who had a head start, and how big was the head start?
had a head start of
meters.
Answer:
Ryan had a head start of 10 meters
Step-by-step explanation:
The darkness of the print is measured quantitatively using an index. If the index is greater than or
equal to 2.0 then the darkness is acceptable. Anything less than 2.0 means the print is too light and
not acceptable. Assume that the machines print at an average darkness of 2.2 with a standard
deviation of 0.20.
(a) What percentage of printing jobs will be acceptable? (4)
(b) If the mean cannot be adjusted, but the standard deviation can, what must be the new standard
deviation such that a minimum of 95% of jobs will be acceptable?
84.13% of the printing jobs will be acceptable.
The new standard deviation required to achieve a minimum of 95% of jobs acceptable is 0.121.
The darkness of the print is measured quantitatively using an index. If the index is greater than or equal to 2.0 then the darkness is acceptable. Anything less than 2.0 means the print is too light and not acceptable. The machines print at an average darkness of 2.2 with a standard deviation of 0.20.
The mean of the darkness of the print is µ = 2.2 and the standard deviation is σ = 0.20.Therefore, the z-score can be calculated as; `z = (x - µ) / σ`.The index required for acceptable prints is 2.0. Thus, the percentage of prints that are acceptable can be calculated as follows;P(X ≥ 2.0) = P((X - µ)/σ ≥ (2.0 - 2.2) / 0.20)P(Z ≥ -1) = 1 - P(Z < -1)Using the standard normal table, P(Z < -1) = 0.1587P(Z ≥ -1) = 1 - 0.1587= 0.8413.
To find the new standard deviation, we can use the z-score formula.z = (x - µ) / σz = (2.0 - 2.2) / σz = -1Therefore, P(X ≥ 2.0) = 0.95P(Z ≥ -1) = 0.95P(Z < -1) = 0.05Using the standard normal table, the z-score value of -1.645 corresponds to a cumulative probability of 0.05. Hence,z = (2.0 - 2.2) / σ = -1.645σ = (2.0 - 2.2) / -1.645= 0.121.
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The polynomial function f(x) is graphed below. Fill in the form below regarding the features of this graph.
The degree of f(x) is 5, and the leading coefficient is positive. There are four distinct real zeros and two relative maximum values.
How to obtain the zeros of a function?From the graph of a function, the zeros of the function are the x-intercepts, that is, the values of x for which the graph crosses or touches the x-axis.
The function in this problem has four distinct zeros, given as follows:
1 with even multiplicity, as the graph turns at the x-axis.3 with odd multiplicity, as the graph crosses the x-axis.Hence the degree is given as follows:
2 x 1 + 3 = 5.
The leading coefficient of the function is positive, as the function decays to left and increases to right.
There are two relative maximum values on the graph of the function, which are the points at which the function changes from increasing to decreasing.
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what is relative intrest
Relative interest refers to the comparison of interest rates between different financial instruments or investment opportunities. It allows individuals or investors to assess and evaluate the attractiveness of various options based on their potential returns.
1. Understand the basic concept: Interest is the cost of borrowing money or the return earned on invested funds. Relative interest involves comparing the interest rates of different financial instruments or investments to determine which one offers a more favorable return.
2. Identify the investment options: Start by identifying the different investment opportunities or financial instruments available. These can include savings accounts, certificates of deposit (CDs), bonds, stocks, or other investment vehicles.
3. Research interest rates: Research and gather information about the current interest rates offered by each investment option. This information can usually be found on financial websites, through financial institutions, or by consulting with a financial advisor.
4. Compare interest rates: Once you have the interest rates for each investment option, compare them side by side. Look for the differences in rates and identify which options offer higher or lower returns.
5. Assess risk and return: Consider the level of risk associated with each investment option. Higher returns often come with higher risk, so it's essential to evaluate the risk-reward tradeoff.
6. Make an informed decision: Based on the comparison of interest rates and the risk-reward assessment, make an informed decision on which investment option aligns with your financial goals and risk tolerance.
Always remember to consider your financial goals, risk tolerance, and consult with a financial advisor if needed.
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A camp counselor buys lunch for her campers at a nearby fast food restaurant. On
Monday, she purchased 5 hamburger meals and 6 chicken nugget meals, for a total of
$39. On Thursday, she purchased 9 hamburger meals and 2 chicken nugget meals,
for a total of $35.
Which pair of equations could be used to determine the cost of each type of meal?
Answer:
correct choice is the last one
Step-by-step explanation:
let h = cost of 1 hamburger meal
let c = cost of 1 chicken nugget meal
5h + 6c = 39
9h + 2c = 35
Which expression is equivalent to
V
8y4√√x
5x
By²√x
5
5√√x
8y²
5x√√x
8y4
y
6,11? Assume x > 0 and y> 0.
64x611
The expression equivalent to [tex]V(8y^4√√x / 5x * By^2√x / 5 * 5√√x * 8y^2 / 5x√√x * 8y^4) is V(Bx^7) * x^(1/4) / 5.[/tex]
The given expression is:
[tex]V(8y^4 * √√x / 5x) * (By²√x / 5) * √√x * 8y^2 / (5x√√x * 8y^4)[/tex]
To simplify this expression, let's break it down step by step:
Step 1: Simplify the terms inside the square root (√) and the fourth root (√√):
[tex]√√x = x^(1/4)√√x * 8y^2 = 8y^2 * x^(1/4)[/tex]
Step 2: Simplify the terms with exponents:
[tex]8y^4 * x^(1/4) = 8y^4x^(1/4)8y^2 * x^(1/4) = 8y^2x^(1/4)5x * x^(1/4) = 5x^(5/4)5x√√x = 5x^(5/4)[/tex]
Step 3: Simplify the remaining terms:
[tex]V(8y^4x^(1/4) / 5x) * (By^2x^(1/4) / 5) * 5x^(5/4) / (8y^4)[/tex]
Step 4: Cancel out common factors:
[tex]V(x^(1/4) / 5) * (Bx^(1/4) / 5) * x^(5/4)[/tex]
Step 5: Combine the expressions under the square root:
[tex]V(Bx^(1/4) * x^(1/4) * x^(5/4)) / 5 * 5 * x^(1/4)[/tex]
Step 6: Simplify the exponents:
V[tex](Bx * x * x^5) / 5 * 5 * x^(1/4)[/tex]
Step 7: Combine the terms inside the square root:
V([tex]Bx^7) / 5 * 5 * x^(1/4)[/tex]
Step 8: Simplify the remaining expression:
V(B[tex]x^7) * x^(1/4) / 5[/tex]
Therefore, the expression equivalent to [tex]V(8y^4√√x / 5x * By^2√x / 5 * 5√√x * 8y^2 / 5x√√x * 8y^4) is V(Bx^7) * x^(1/4) / 5[/tex]
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I need some statistics help!!
For a distribution with a standard deviation of σ= 12, describe the location of each of the
following z-scores in terms of its position relative to the mean. For example, = +1.00 is a location that is 12 points above the mean.
a. z = +2.00
Answer:
b. z = +.50
Answer:
c. z= -1.00
Answer:
d. Z= -0.25
Answer:
Answer:
a. z = +2.00
Answer: The position is 24 points above the mean
b. z = +.50
Answer: The position is 6 points above the mean
c. z= -1.00
Answer: The position is 12 points below the mean
d. Z= -0.25
Answer: The position is 3 points below the mean
Step-by-step explanation:
We can use the relation,
[tex]z = (x-u)/S[/tex]
Where u is the mean and S is the standard deviation,
S = 12,
Rearranging, we get,
[tex]Sz = x - u\\12z=x-u\\12z + u = x[/tex]
Where x gives the position relaive to the mean.
So, for z = +1,
we get,
x = u + 12
Hence x is 12 points above the mean (u)
Now answering the questions,
a. z = +2
x = u + (12)(2)
x = u + 24
Hence the position is 24 points above the mean
b. z = +0.50
x = u + 12(o.5)
x = u + 6
hence the position is 6 points above the mean
c. z = -1.00
x = u + 12(-1)
x = u - 12
Hence the position is 12 points below the mean
d. z = -0.25
x = u + (12)(-0.25)
x = u - 3
Hence the position is 3 points below the mean
50 Points! Multiple choice geometry question. Photo attached. Thank you!
Answer:
D; 7 1/2
Step-by-step explanation:
:)
A study was conducted on students from a particular high school over the last 8 years. The following information was found regarding standardized tests used for college admittance. Scores on the SAT test are normally distributed with a mean of 1029 and a standard deviation of 205. Scores on the ACT test are normally distributed with a mean of 22.7 and a standard deviation of 5. It is assumed that the two tests measure the same aptitude, but use different scales.
If a student gets an SAT score that is the 50-percentile, find the actual SAT score.
SAT score =
Round answer to a whole number.
What would be the equivalent ACT score for this student?
ACT score =
Round answer to a whole number.
If a student gets an SAT score of 1501, find the equivalent ACT score.
ACT score =
Round answer to a whole number.
At what points is the function y=|6x-7|+3 sin (5x) continuous?
So this is the set of all x-values where the function y = 16x - 71 + 3sin(5x) is continuous.
The function y = 16x - 71 + 3sin(5x) is continuous everywhere since it is a sum of continuous functions. The function 16x is a polynomial, which is continuous for all values of x. The function 3sin(5x) is also continuous for all values of x since it is a composition of continuous functions (sin(x) and 5x), and the constant term -71 is also continuous.
Therefore, we do not need to find any specific points of continuity or discontinuity – the function is continuous for all x.
To describe the set of x-values where the function is continuous in interval notation, we can simply write:
(-∞, ∞)
This interval includes all real numbers.
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The units of an item available for sale during the year were as follows: Jan. 1 Inventory 50 units at $124 Mar. 10 Purchase 60 units at $132 Aug. 30 Purchase 20 units at $138 Dec. 12 Purchase 70 units at $142 There are 80 units of the item in the physical inventory at December 31. The periodic inventory system is used. Determine the ending inventory cost and the cost of goods sold by three methods. Round interim calculations to one decimal and final answers to the nearest whole dollar. blank Cost of Ending Inventory and Cost of Goods Sold Inventory Method Ending Inventory Cost of Goods Sold First-in, first-out (FIFO) $fill in the blank 1 $fill in the blank 2 Last-in, first-out (LIFO) fill in the blank 3 fill in the blank 4 Weighted average cost fill in the blank 5 fill in the blank 6
Ending Inventory Cost and Cost of Goods Sold using different inventory methods:
FIFO Method:
Ending Inventory Cost: $11,920
Cost of Goods Sold: $15,068
LIFO Method:
Ending Inventory Cost: $11,996
Cost of Goods Sold: $15,123
Weighted Average Cost Method:
Ending Inventory Cost: $11,974
Cost of Goods Sold: $15,087
Using the FIFO (First-In, First-Out) method, the cost of the ending inventory is determined by assuming that the oldest units (those acquired first) are sold last. In this case, the cost of the ending inventory is calculated by taking the cost of the most recent purchases (70 units at $142 per unit) plus the cost of the remaining 10 units from the March 10 purchase.
This totals to $11,920. The cost of goods sold is calculated by taking the cost of the units sold (50 units from the Jan. 1 inventory at $124 per unit, 60 units from the March 10 purchase at $132 per unit, and 20 units from the August 30 purchase at $138 per unit), which totals to $15,068.
Using the LIFO (Last-In, First-Out) method, the cost of the ending inventory is determined by assuming that the most recent units (those acquired last) are sold first. In this case, the cost of the ending inventory is calculated by taking the cost of the remaining 10 units from the December 12 purchase, which amounts to $1,420, plus the cost of the 70 units from the August 30 purchase, which amounts to $10,576.
This totals to $11,996. The cost of goods sold is calculated by taking the cost of the units sold (50 units from the Jan. 1 inventory, 60 units from the March 10 purchase, and 20 units from the August 30 purchase), which totals to $15,123.
Using the Weighted Average Cost method, the cost of the ending inventory is determined by calculating the weighted average cost per unit based on all the purchases. In this case, the total cost of all the purchases is $46,360, and the total number of units is 200.
Therefore, the weighted average cost per unit is $231.80. Multiplying this by the 80 units in the physical inventory at December 31 gives a total cost of $11,974 for the ending inventory. The cost of goods sold is calculated by taking the cost of the units sold (50 units from the Jan. 1 inventory, 60 units from the March 10 purchase, and 20 units from the August 30 purchase), which totals to $15,087.
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A experimental bullet train is traveling 316 miles per hour how long at that speed would it take for the train to travel 63.2 miles the time would be
It would take the experimental bullet train 0.2 hours or 12 minutes to travel 63.2 miles at a speed of 316 miles per hour.
To determine the time it would take for an experimental bullet train traveling at 316 miles per hour to travel 63.2 miles, we can use the formula:
time = distance / speed
Where:
- time is the time it takes to travel the given distance at the given speed
- distance is the given distance to be traveled
- speed is the given speed at which the distance is to be traveled
Substituting the given values:
time = 63.2 miles / 316 miles per hour
time = 0.2 hours or 12 minutes
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C
55
Solve for C.
90
C = [?]
Round your
to the nearest tenth.
final answer
50
Law of Cosines: c² = a² + b² - 2ab-cosC
Measure of Angle C
Answer:
29.4°
Step-by-step explanation:
The equation can be rearranged to give C directly.
C = arccos((a^2 +b^2 -c^2)/(2ab))
C = arccos((90^2 +55^2 -50^2)/(2·90·55))
C = arccos(8625/9900) ≈ 29.4002°
C ≈ 29.4°
The measure of angle C is approximately 29.46 degrees.
How to determine angle CTo find the measure of angle C (cos(C)) using the given values a = 55, b = 90, and c = 50, we can use the Cosine Rule formula:
cos(C) = (a² + b² - c²) / (2 * a * b)
Substitute the given values:
cos(C) = (55² + 90² - 50²) / (2 * 55 * 90)
Now, calculate the numerator:
cos(C) = (3025 + 8100 - 2500) / (2 * 55 * 90)
cos(C) = 8625 / 9900
Now, divide to get the final value of cos(C):
cos(C) ≈ 0.8707
To find the measure of angle C itself, we can take the inverse cosine (arccos) of this value:
C ≈ arccos(0.8707)
Using a calculator, you'll find:
C ≈ 29.46 degrees (rounded to two decimal places)
So, the measure of angle C is approximately 29.46 degrees.
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Simplify the following expression:
√-36+√-100+ 7
O A. 7+ 16i
OB. 7+√136i
O C. 16
C. 16 - 7i
O D. 23 + 0i
Find the area of the regular pentagon with apothem 3.5 and side. Not drawn to scale.
100 POINTS
SHOW WORK PLEASE
Answer:
52.5 inch square
Step-by-step explanation:
Area of pentagon: A = 1/2 × p × a;
where 'p' is the perimeter of the pentagon and 'a' is the apothem of the pentagon.
A = 1/2 x (6 x 5) x 3.5 = 1/2 x 30 x 3.5 = 15 x 3.5 = 52.5
The area of the regular pentagon with apothem 3.5 and side 6 is 52.5
What is the area of the regular pentagon?In Mathematics, a pentagon is a polygon with 5 sides. A pentagon can be classified as a regular pentagon and irregular pentagon. When all the sides and the angles of a pentagon are of equal measure, then it is called a regular pentagon.
How to find the area of the regular pentagonGiven the question, we need to find the area of the regular pentagon with apothem 3.5 and side 6.
In order to find the area, the formula to calculate the area of the regular pentagon is given by:
[tex]\text{Area of pentagon} =\sf \huge \text(\dfrac{5}{2}\huge \text) \times s \times a[/tex]
Where “s” is the side length. And “a” is the apothem length.Now,
[tex]\text{Area of pentagon} =\sf \huge \text(\dfrac{5}{2}\huge \text) \times s \times a[/tex]
[tex]\text{Area of pentagon} =\sf \huge \text(\dfrac{5}{2}\huge \text) \times 6 \times 3.5[/tex]
[tex]\text{Area of pentagon} =52.5[/tex]
Therefore, the area of the regular pentagon with apothem 3.5 and side 6 is 52.5
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Which numbers are divisible by 3?
a.551
b.461
c.816
d. none of these
To determine which numbers are divisible by 3 among the given options, we need to check if each number is divisible by 3 without leaving a remainder.
Let's examine each option:
a. 551: To check if 551 is divisible by 3, we can add up its digits: 5 + 5 + 1 = 11. Since 11 is not divisible by 3, 551 is not divisible by 3.
b. 461: Adding up the digits of 461: 4 + 6 + 1 = 11. Similarly, since 11 is not divisible by 3, 461 is not divisible by 3.
c. 816: Summing up the digits of 816: 8 + 1 + 6 = 15. Since 15 is divisible by 3 (15 ÷ 3 = 5), 816 is divisible by 3.
d. None of these: Since options a and b are not divisible by 3, and option c (816) is divisible by 3, the correct answer is "d. none of these."
Therefore, among the given options, only the number 816 is divisible by 3.
[tex]\huge{\mathfrak{\colorbox{black}{\textcolor{lime}{I\:hope\:this\:helps\:!\:\:}}}}[/tex]
♥️ [tex]\large{\underline{\textcolor{red}{\mathcal{SUMIT\:\:ROY\:\:(:\:\:}}}}[/tex]
URGENT PLEASE
Find the area of the shaded region and round to the nearest tenth.
SHOW WORK AND ANSWER!
ANSWER
61.8 m^[2].
We first examine what we have which is:
A parallelogram with base 14m and height 8m
A circle with DIAMETER 8m
Given our area formulas, we know we have our b and h in our parallelogram formula given. If our circle diameter is 8m, our circle radius must be 4m. Therefore, we have every element of our formulas we need.
parallelogram area = b*h = 14*8 = 112m^[2]
circle area = pi*r^[2] = pi*4m^[2]=16*3.14=50.24m^[2].
now we just subtract our circle area from our parallelogram area, and round our answer to the nearest tenth (the first place to the right of the decimal):
112m^[2]-50.24m^[2]=61.76 m^[2].
Rounded to the nearest tenth, this number becomes 61.8 m^[2].
Consider a medium with parameters € = 1.2 (10^-10 )F/m , n= 3(10^-3) H/m and sigma=0. Magnetic field intensity in the medium is given as R = 2cos (10^10t- 600x)äz Am.
Use Maxwell's equations to obtain the followings:
1) Magnetic flux density
These questions is circuit theory
Using Maxwell's equations, we can determine the magnetic flux density. One of the Maxwell's equations is:
[tex]\displaystyle \nabla \times \mathbf{H} = \mathbf{J} + \frac{\partial \mathbf{D}}{\partial t}[/tex],
where [tex]\displaystyle \nabla \times \mathbf{H}[/tex] is the curl of the magnetic field intensity [tex]\displaystyle \mathbf{H}[/tex], [tex]\displaystyle \mathbf{J}[/tex] is the current density, and [tex]\displaystyle \frac{\partial \mathbf{D}}{\partial t}[/tex] is the time derivative of the electric displacement [tex]\displaystyle \mathbf{D}[/tex].
In this problem, there is no current density ([tex]\displaystyle \mathbf{J} =0[/tex]) and no time-varying electric displacement ([tex]\displaystyle \frac{\partial \mathbf{D}}{\partial t} =0[/tex]). Therefore, the equation simplifies to:
[tex]\displaystyle \nabla \times \mathbf{H} =0[/tex].
Taking the curl of the given magnetic field intensity [tex]\displaystyle \mathbf{R} =2\cos( 10^{10} t-600x)\hat{a}_{z}\, \text{Am}[/tex]:
[tex]\displaystyle \nabla \times \mathbf{R} =\nabla \times ( 2\cos( 10^{10} t-600x)\hat{a}_{z}) \, \text{Am}[/tex].
Using the curl identity and applying the chain rule, we can expand the expression:
[tex]\displaystyle \nabla \times \mathbf{R} =\left( \frac{\partial ( 2\cos( 10^{10} t-600x)) \hat{a}_{z}}{\partial y} -\frac{\partial ( 2\cos( 10^{10} t-600x)) \hat{a}_{z}}{\partial z}\right) \mathrm{d} x\mathrm{d} y\mathrm{d} z[/tex].
Since the magnetic field intensity [tex]\displaystyle \mathbf{R}[/tex] is not dependent on [tex]\displaystyle y[/tex] or [tex]\displaystyle z[/tex], the partial derivatives with respect to [tex]\displaystyle y[/tex] and [tex]\displaystyle z[/tex] are zero. Therefore, the expression further simplifies to:
[tex]\displaystyle \nabla \times \mathbf{R} =-\frac{\partial ( 2\cos( 10^{10} t-600x)) \hat{a}_{z}}{\partial x} \mathrm{d} x\mathrm{d} y\mathrm{d} z[/tex].
Differentiating the cosine function with respect to [tex]\displaystyle x[/tex]:
[tex]\displaystyle \nabla \times \mathbf{R} =-2( 10^{10}) \sin( 10^{10} t-600x)\hat{a}_{z} \mathrm{d} x\mathrm{d} y\mathrm{d} z[/tex].
Setting this expression equal to zero according to [tex]\displaystyle \nabla \times \mathbf{H} =0[/tex]:
[tex]\displaystyle -2( 10^{10}) \sin( 10^{10} t-600x)\hat{a}_{z} \mathrm{d} x\mathrm{d} y\mathrm{d} z =0[/tex].
Since the equation should hold for any arbitrary values of [tex]\displaystyle \mathrm{d} x[/tex], [tex]\displaystyle \mathrm{d} y[/tex], and [tex]\displaystyle \mathrm{d} z[/tex], we can equate the coefficient of each term to zero:
[tex]\displaystyle -2( 10^{10}) \sin( 10^{10} t-600x) =0[/tex].
Simplifying the equation:
[tex]\displaystyle \sin( 10^{10} t-600x) =0[/tex].
The sine function is equal to zero at certain values of [tex]\displaystyle ( 10^{10} t-600x) [/tex]:
[tex]\displaystyle 10^{10} t-600x =n\pi[/tex],
where [tex]\displaystyle n[/tex] is an integer. Rearranging the equation:
[tex]\displaystyle x =\frac{ 10^{10} t-n\pi }{600}[/tex].
The equation provides a relationship between [tex]\displaystyle x[/tex] and [tex]\displaystyle t[/tex], indicating that the magnetic field intensity is constant along lines of constant [tex]\displaystyle x[/tex] and [tex]\displaystyle t[/tex]. Therefore, the magnetic field intensity is uniform in the given medium.
Since the magnetic flux density [tex]\displaystyle B[/tex] is related to the magnetic field intensity [tex]\displaystyle H[/tex] through the equation [tex]\displaystyle B =\mu H[/tex], where [tex]\displaystyle \mu[/tex] is the permeability of the medium, we can conclude that the magnetic flux density is also uniform in the medium.
Thus, the correct expression for the magnetic flux density in the given medium is:
[tex]\displaystyle B =6\cos( 10^{10} t-600x)\hat{a}_{z}[/tex].
In the diagram, which of the following is not a possible measure of angle DCB?
The options that are not possible measure of angle DCB would be 30°,27° and 34°. That is option A,B and C.
How to determine the possible measure of the missing angle?To determine the possible measure of the missing angle, the rules of the triangle needs to be obeyed.
The triangle represented above is an example of an Isosceles triangle which is a type of triangle that has both two equal sides and two equal angles.
Therefore, the <DCB should also be equal to 35° and not 30°,27° and 34°.
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The sum of five and twice a number 49. Find the number
Use the quadratic formula to solve the equation.
8x² - 7x + 1 = 0
Answer:
[tex]\displaystyle x=\frac{7\pm\sqrt{17} }{16}[/tex]
Step-by-step explanation:
We will use the given quadratic formula and equation to substitute. We substitute values with the equation form o = ax² + bx + c.
[tex]\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}[/tex]
[tex]\displaystyle x=\frac{7\pm\sqrt{(-7)^2-4(8)(1)} }{2(8)}[/tex]
Lastly, we will simplify this equation until it matches one of the given answer options. We will square -7 and multiply -4(8)(1) and 2(8).
[tex]\displaystyle x=\frac{7\pm\sqrt{(-7)^2-4(8)(1)} }{2(8)}[/tex]
[tex]\displaystyle x=\frac{7\pm\sqrt{49-32} }{16}[/tex]
Lastly, we will subtract 32 from 49. This is the last answer option.
[tex]\displaystyle x=\frac{7\pm\sqrt{17} }{16}[/tex]
Write the English phrase as an algebraic expression. Then simplify the expression. Let x represent the number. The product of 8 and a number, which is then subtracted from the product of 17 and the number.
The algebraic expression for the given phrase is: 17x - 8x. To simplify this expression, we can combine like terms by subtracting the coefficients of x. The simplified expression is: 9x.
In the given phrase, "The product of 8 and a number" can be represented as 8x, where x represents the number. Similarly, "The product of 17 and the number" can be represented as 17x. Since we are subtracting the product of 8x from the product of 17x, the algebraic expression becomes 17x - 8x.
To simplify the expression, we combine like terms. The coefficients of x are 17 and -8. Since we are subtracting 8x from 17x, we subtract the coefficient of 8x from the coefficient of 17x, resulting in 17x - 8x. Combining like terms gives us 9x.
In conclusion, the simplified expression for the phrase "The product of 8 and a number, which is then subtracted from the product of 17 and the number" is 9x.
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ASAP!!! NEED AN ANSWER
In this budget scenario, use 15 per hour as the current wage for 40 hour work weeks. Hint: There are 52 weeks in a year, and 12 months in a year.
1. What is the gross yearly income?
2. What is the gross monthly income using this pay rate?
1)Gross Yearly Income = Hourly Wage × Hours per Week × Weeks in a Year
Gross Yearly Income = $15/hour × 40 hours/week × 52 weeks/year
Gross Yearly Income = $31,200
2)Gross Monthly Income = Gross Yearly Income / Months in a Year
Gross Monthly Income = $31,200 / 12 months
Gross Monthly Income ≈ $2,600
Waiting times (in minutes) of customers at a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the coefficient of variation for each of the two sets of data, then compare the variation.
Bank A (single line) Bank B (individual lines)
6.5 4.0
6.6 5.4
6.7 5.9
6.7 6.2
7.1 6.8
7.4 7.7
7.5 7.7
7.7 8.5
7.7 9.4
7.7 9.8
A) The coefficient of variation for the waiting times at Bank A is
(Round to one decimal place as needed.)
B) The coefficient of variation for the waiting times at Bank B is
(Round to one decimal place as needed.)
C)Is there a difference in variation between the two data sets?
The coefficient of variation for Bank A is approximately 8.04%, while the coefficient of variation for Bank B is approximately 25.55%.
To find the coefficient of variation for each set of data, we need to calculate the mean and standard deviation for each set. The coefficient of variation is then calculated by dividing the standard deviation by the mean and multiplying by 100.
Let's calculate the coefficient of variation for each set of data:
Bank A (single line):
Mean: Calculate the mean of the data set.
Mean = (6.5 + 6.6 + 6.7 + 6.7 + 7.1 + 7.4 + 7.5 + 7.7 + 7.7 + 7.7) / 10 = 7.03 minutes
Standard deviation: Calculate the standard deviation of the data set.
Standard deviation = √[(6.5 - 7.03)² + (6.6 - 7.03)² + ... + (7.7 - 7.03)²] / 10 ≈ 0.565 minutes
Coefficient of variation:
Coefficient of variation = (0.565 / 7.03) * 100 ≈ 8.04%
Bank B (individual lines):
Mean: Calculate the mean of the data set.
Mean = (4.0 + 5.4 + 5.9 + 6.2 + 6.8 + 7.7 + 7.7 + 8.5 + 9.4 + 9.8) / 10 = 7.5 minutes
Standard deviation: Calculate the standard deviation of the data set.
Standard deviation = √[(4.0 - 7.5)² + (5.4 - 7.5)² + ... + (9.8 - 7.5)²] / 10 ≈ 1.916 minutes
Coefficient of variation:
Coefficient of variation = (1.916 / 7.5) * 100 ≈ 25.55%
Comparing the variation:
The coefficient of variation for Bank A is approximately 8.04%, while the coefficient of variation for Bank B is approximately 25.55%. Since the coefficient of variation measures the relative variability of the data, we can conclude that the waiting times at Bank B (individual lines) have a higher variation compared to Bank A (single line).
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remove all perfect squares from inside the square root of 200y^2
[tex]\sqrt{200y^2} ~~ \begin{cases} 200=&2\cdot 10\cdot 10\\ & 2\cdot 10^2 \end{cases}\implies \sqrt{2\cdot 10^2 y ^2}\implies 10y\sqrt{2}[/tex]
Bally Manufacturing sent Intel Corporation an invoice for machinery with a $13,100 list price. Bally dated the invoice August 01 with 3/10
EOM terms. Intel receives a 40% trade discount. Intel pays the invoice on August 14. On August 10, Intel Corporation returns $100 of the machinery due to defects. What does Intel pay Bally on August 14?
The Intel pays $7,760 to Bally Manufacturing on August 14.
The first step in calculating what Intel Corporation pays Bally on August 14 is to determine the net price of the machinery after the trade discount and the return of $100 due to defects.
The trade discount of 40% is calculated as follows:
Discount = List price × Discount rate
Discount = $13,100 × 0.40 = $5,240
So the net price of the machinery after the trade discount is:
Net price = List price - Discount
Net price = $13,100 - $5,240 = $7,860
After Intel returns $100 of machinery, the cost of the machinery is further reduced to:
Net price after return = Net price - Return
Net price after return = $7,860 - $100 = $7,760
Since the payment terms are 3/10 EOM (end of month), Intel receives a discount of 3% if payment is made within 10 days. The 10-day period begins on August 1 and ends on August 10 (the payment due date). Since Intel pays the bill on August 14, payment is late and the 3% discount does not apply.
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Un profesor de Enseñanza Básica le indica a sus alumnos que escojan tres dígitos
diferentes del conjunto {1, 2, 3, 4, 5} y formen números mixtos colocando los dígitos
en el casillero . También les recuerda que la parte fraccionaria tiene que ser
menor que 1, por ejemplo
2
3
5
. ¿Cuál es la diferencia entre el mayor y el menor de los
números mixtos que se pueden formar?
Enseñanza Básica is the term used to describe the first level of education in the Chilean education system, which includes the first to eighth grades. A teacher of Enseñanza Básica asked his students to choose three-digit mixed numbers that can be formed.
A mixed number is a number that has both a whole number and a fraction component. To form three-digit mixed numbers, we need to have a whole number that is less than 100 and a proper fraction that has a denominator less than or equal to 99. Here are some examples:123 4/567 2/8109 1/2382 3/47There are a total of 900 three-digit numbers that can be formed using digits 1 to 9 without repetition. To find the number of three-digit mixed numbers that can be formed, we need to count the number of ways we can choose a proper fraction with a denominator less than or equal to 99. There are 99 possible denominators, and for each denominator, there are 98 possible numerators (excluding 0 and the denominator itself). Therefore, the total number of three-digit mixed numbers that can be formed is:900 x 99 x 98 = 8,334,600There are 8,334,600 three-digit mixed numbers that can be formed using digits 1 to 9 without repetition.For such more question on fraction
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The difference between the greatest and the least mixed numbers is 9.87 - 6.0789 ≈ 3.7911.
How to solveThe three digits different from {1, 2, 3, 4, 5} can be chosen from {0, 6, 7, 8, 9}.
The greatest mixed number is formed by placing the largest digit as the whole number and the remaining two digits as the fraction in descending order, i.e., 9 87/100 or 9.87.
The smallest mixed number is formed by placing the smallest non-zero digit as the whole number and the remaining two digits as the fraction in ascending order, i.e., 6 07/90 or 6.0789.
The difference between the greatest and the least mixed numbers is 9.87 - 6.0789 ≈ 3.7911.
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The Question in English
A Basic Education teacher tells his students to choose three digits
different from the set {1, 2, 3, 4, 5} and form mixed numbers by placing the digits
in the locker It also reminds them that the fractional part has to be
less than 1, for example
2
3
5
. What is the difference between the greatest and the least of the
mixed numbers that can be formed?
Jenny went bowling. She paid $2.75 to rent bowling shoes and she paid $4.25 for each game. If Jenny paid a total of $24, how many games did she bowl
Let's analyze Jenny's bowling expenses, considering the cost of renting bowling shoes and the price per game. By determining the total amount she paid and using the given information, we can calculate the number of games Jenny bowled.
Step-by-step explanation:
Let's set the number of games Jenny bowled as 'x'.
Jenny paid $2.75 for renting the bowling shoes and $4.25 for each game. The total amount she paid is $24.
The total amount Jenny paid for the games can be represented as: $4.25 * x.
So, the equation can be set up as:
$2.75 + $4.25 * x = $24.
To find the value of 'x', we need to solve the equation.
Subtracting $2.75 from both sides:
$4.25 * x = $24 - $2.75.
$4.25 * x = $21.25.
Dividing both sides by $4.25:
x = $21.25 / $4.25.
x = 5.
Answer: Therefore, Jenny bowled a total of 5 games.