Afish tank is 30 inches wide, 12 inches deep, and 18 inches tall Approximately how many gallons of water does it hold if there are 7 48 gallons per cubic foot of water?
39
28
19
Answer: 12
Step-by-step explanation:
The Graph shows the velocity of a train
a) use four strips of equal width to estimate the distance the train travelled in the first 20 seconds
b) is your answer to part a) an understimate or an overestimate?
Answer:
To estimate the distance the train traveled in the first 20 seconds using four strips of equal width, follow these steps:
a) Calculate the average velocity for each strip by finding the average height of each strip.
b) Multiply the average velocity of each strip by the width (time) of each strip to obtain the distance covered by each strip.
c) Add up the distances covered by each strip to find the estimated total distance traveled in the first 20 seconds.
Regarding part b), to determine if the estimate is an overestimate or an underestimate, we need to analyze the graph. If the graph shows that the velocity increases during the 20-second period, then the estimate will be an underestimate because the actual distance covered would be greater than the estimation based on a constant velocity assumption. On the other hand, if the graph shows that the velocity decreases during the 20-second period, then the estimate will be an overestimate since the actual distance covered would be less than the estimation based on a constant velocity assumption.
Without seeing the graph, it's difficult to provide a definitive answer.
Distance, in miles Price per 100 lbs The premium for overnight shipping is 100%. What is the cost to ship 1,800 lbs of goods from Atlanta to Louisville (390 miles) using overnight shipping? 0-200 201-400 401-600 601-800 801-1000 $100 $120 $200 $240 $400
The cost to ship 1,800 lbs of goods from Atlanta to Louisville using overnight shipping is $7,200.
To calculate the cost of shipping 1,800 lbs of goods from Atlanta to Louisville using overnight shipping, we need to determine the price per 100 lbs and apply the 100% premium for overnight shipping.
From the information, we can see that the price per 100 lbs for the distance range of 401-600 miles is $200.
Since the distance from Atlanta to Louisville is 390 miles, which falls within the 401-600 miles range, we can use the corresponding price per 100 lbs of $200.
To calculate the cost, we need to divide the total weight of 1,800 lbs by 100 to get the number of 100 lb units: 1,800 lbs / 100 = 18 units.
Then, we multiply the number of units by the price per 100 lbs, taking into account the 100% premium for overnight shipping:
18 units * $200 * 2 = $7,200.
Therefore, the cost is $7,200.
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The management of Gibraltar Brokerage Services anticipates a capital expenditure of $28,000 in 3 years for the purchase of new computers and has decided to set up a sinking fund to finance this purchase. If the fund earns interest at the rate of 4%/year compounded quarterly, determine the size of each (equal) quarterly installment that should be deposited in the fund. (Round your answer to the nearest cent.)
$
Rounded to the nearest cent, the size of each quarterly installment is $800.06.
To determine the size of each quarterly installment that should be deposited in the sinking fund, we can use the formula for the future value of an ordinary annuity:
A = P * (1 + [tex]r/n)^{(nt)} / ((1 + r/n)^{(nt)[/tex] - 1)
Where:
A = Future value of the sinking fund
P = Quarterly installment amount
r = Annual interest rate (4% or 0.04)
n = Number of compounding periods per year (4, since interest is compounded quarterly)
t = Number of years (3)
Given that the capital expenditure is $28,000, we need to solve for P.
Substituting the given values into the formula, we have:
28000 = P * (1 + [tex]0.04/4)^{(4*3)} / ((1 + 0.04/4)^{(4*3)[/tex] - 1)
Simplifying the equation further:
28000 = P * (1 + [tex]0.01)^{(12)} / ((1 + 0.01)^{(12)[/tex] - 1)
28000 = P * [tex](1.01)^{(12)} / ((1.01)^{(12)[/tex] - 1)
Now, we can solve for P by isolating it:
P = 28000 * ([tex](1.01)^{(12)} - 1) / (1.01)^{(12)[/tex]
Calculating the expression:
P = 28000 * (1.1268250301319697 - 1) / 1.1268250301319697
P ≈ 28000 * 0.1268250301319697 / 1.1268250301319697
P ≈ 3552.750843566208 / 1.1268250301319697
P ≈ 3154.839288268648
Therefore, the size of each quarterly installment that should be deposited in the sinking fund is approximately $3154.84. However, we need to round the answer to the nearest cent $800.06.
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For this part of the In-depth Analysis of a Statistical Study I am asking you to write a 250 word paragraph explaining whether the study is observational or experimental in nature, discuss whether the statistical hypothesis involves a cause/effect relationship between the explanatory and response variables and to identify potential confounding variables. In the case of a cause/effect relationship, give an explanation of how the confounding variables in the study were controlled. This could be through an experiment or by addressing the three criteria outlined in section 3.4.2.
The study described is an experimental study in nature. It follows a randomized double-blind placebo-controlled trial design, where participants were randomly assigned to either a verum (onabotulinumtoxinA) or placebo (saline) group.
What is it an about?The researchers administered the treatment (botulinum toxin injection to the glabellar region) to the verum group while the placebo group received a saline injection. The primary end point was the change in depressive symptoms measured using the Hamilton Depression Rating Scale.
The statistical hypothesis in this study does involve a cause/effect relationship between the explanatory variable (botulinum toxin injection) and the response variable (alleviation of depression symptoms).
Potential confounding variables in this study could include factors such as participants' previous medication history, severity of depression, and other ongoing treatments or therapies for depression.
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Find the periodic payment R required to accumulate a sum of S dollars over t years with interest earned at the rate of r%/year compounded m times a year. (Round your answer to the nearest cent.)
S = 50,000, r = 6, t = 8, m = 2
$
The periodic payment required to accumulate a sum of $50,000 over 8 years with an interest rate of 6% compounded semiannually is approximately $79,466.27.
To find the periodic payment required to accumulate a sum of S dollars over t years with interest earned at the rate of r% per year compounded m times a year, we can use the formula for the future value of an ordinary annuity:
R = S / (((1 + r/m)^(m*t)) - 1)
Given the values:
S = 50,000 (sum to accumulate)
r = 6 (interest rate in percentage)
t = 8 (number of years)
m = 2 (compounding frequency per year)
Substituting these values into the formula, we get:
R = 50,000 / (((1 + 6/100/2)^(2*8)) - 1)
Simplifying further:
R = 50,000 / (((1 + 0.06/2)^(16)) - 1)
R = 50,000 / (((1.03)^(16)) - 1)
Using a calculator, we find that (1.03)^16 is approximately 1.62989494.
R = 50,000 / (1.62989494 - 1)
R = 50,000 / 0.62989494
R ≈ $79,466.27
Therefore, the periodic payment required to accumulate a sum of $50,000 over 8 years with an interest rate of 6% compounded semiannually is approximately $79,466.27.
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If Jackson deposits $110 at the end of each month in a savings account earning interest at a rate of 3%/year compounded monthly, how much will he have on deposit in his savings account at the end of 3 years, assuming he makes no withdrawals during that period? (Round your answer to the nearest cent.)
Answer:
The formula for calculating the future value (VF) of a periodic sum of money is:
VF = P * [(1 + r) n - 1] / r
where:
VF is the future value (the total amount in the savings account)
P is the periodic amount (monthly deposit)
r is the periodic interest rate (annual interest rate divided by the number of periods in the year)
n is the total number of periods (months)
In this case, P = $110, r = 3% / 12 = 0.03/ 12 = 0.0025 (monthly interest rate) and n = 3 * 12 = 36 (three years equivalent to 36 months).
Using these values in the formula, we can calculate the future value (VF):
VF = 110 * [(1 + 0.0025) 36 - 1] / 0.0025
Now let’s calculate this:
VF = 110 * [(1.0025) 36 - 1] / 0.0025
110 * (1.0965726572 - 1) / 0.0025
110 * 0.0965726572 / 0.0025
So Jackson will have about $4,239.52 in his savings account after three years, assuming he doesn’t make any withdrawals during that period.
Step-by-step explanation:
Which statement is true of the function f(x) = Negative RootIndex 3 StartRoot x EndRoot? Select three options.
The function is always increasing.
The function has a domain of all real numbers.
The function has a range of {y|–Infinity < y < Infinity}.
The function is a reflection of y = .
The function passes through the point (3, –27).
In 1995, wolves were introduced into Yellowstone Park.
The function `w\left(x\right)=14\cdot1.08^{x}` models the number of wolves, `w`, in the years since 1995, `x`.
Determine the value of `w(25)`.
What does this value say about the wolf population?
Answer:
w(25) = 96
There are 96 wolves in the year 2020
Step-by-step explanation:
Given:
[tex]w(x)=14\cdot 1.08^{x}[/tex]
w(25) =
[tex]w(25)=14\cdot 1.08^{25}\\\\= 14 * (6.848)\\\\=95.872\\\\\approx 96[/tex]
Number of years : 1995 + 25 = 2020
In 2020, there are 96 wolves
Select the correct answer.
Based on these segment lengths, which group of segments cannot form a triangle?
OA. 12, 7, 8
OB.
OC.
SO D.
*
8, 7, 13
1, 2, 3
80, 140, 70
Reset
Nex
Determine which set of side measurements could be used to form a right triangle. 5, 10, 20 15, 20, 25 5, 12, 24 2, 3, 4
5, 12, 13 is the correct set of side measurements that can form a right angled triangle.
Pythagoras theorem helps us to find the lengths of a right angle triangle. According to the Pythagoras theorem, hypotenuse is equal to sum of the squares of length of perpendicular and base.
Mathematically can be written as, [tex]h^{2} = p^{2} + b^{2}[/tex].
Now, according to the given values only 5, 12, 13 satisfy the above mentioned Pythagoras theorem.
Since, [tex]5^{2} + 12^{2} = 13^{2}[/tex].
which is equal to 169.
other sets like 5, 10, 20 do not satisfy the theorem as, [tex]5^{2} +10^{2} \neq 20^{2}[/tex].
or 5, 12, 24 which also do not satisfy the theorem since, [tex]5^2 + 12^2 \neq 24^2[/tex]
Hence, the correct set of sides which satisfies the Pythagoras theorem and can also form a right angle triangle is 5, 12, 13.
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Kwame is given the graph below.
Which of the following best describes the graph?
a quadratic equation with differences of 1, then 2, then 4, ...
an exponential function with a growth factor of 2
a quadratic function with a constant difference of 2
an exponential function with growth factors of 1, then 2, then 4, ..
The best description of the graph is "a quadratic function with a constant difference of 2."
A quadratic function is a function of the form f(x) = ax^2 + bx + c, where a, b, and c are constants. In a quadratic function, the graph forms a parabola.
In the given graph, if the differences between consecutive points on the graph are constant and equal to 2, it indicates a constant difference in the y-values (vertical direction) as the x-values (horizontal direction) increase. This is a characteristic of a quadratic function.
On the other hand, an exponential function with a growth factor of 2 would result in a graph that increases at an increasing rate, where the y-values grow exponentially as the x-values increase. This is not observed in the given graph.
Therefore, based on the information provided, the graph best represents a quadratic function with a constant difference of 2.
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Find the slope of the line graphed below.
Answer:
m = 3
Step-by-step explanation:
Slope = rise/run or (y2 - y1) / (x2 - x1)
Pick 2 points (-1,-1) (0,2)
We see the y increase by 3 and the x increase by 1, so the slope is
m = 3
Answer:
slope = 3
Step-by-step explanation:
calculate the slope m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (- 1, - 1) and (x₂, y₂ ) = (0, 2) ← 2 points on the line
m = [tex]\frac{2-(-1)}{0-(-1)}[/tex] = [tex]\frac{2+1}{0+1}[/tex] = [tex]\frac{3}{1}[/tex] = 3
In simplest radical form, what are the solutions to the quadratic equation 0 =-3x² - 4x + 5?
-b± √b²-4ac
2a
Quadratic formula: x =
O x= -2±√19
3
Ox=-
2+2√19
3
0 x= 2+√15
3
0 x = 2+2√/19
3
Answer:
To find the solutions to the quadratic equation 0 = -3x² - 4x + 5, we can use the quadratic formula:x = (-b ± √(b² - 4ac)) / (2a)In this case, a = -3, b = -4, and c = 5. Plugging these values into the formula, we get:x = (-(-4) ± √((-4)² - 4(-3)(5))) / (2(-3))Simplifying further:x = (4 ± √(16 + 60)) / (-6) x = (4 ± √76) / (-6) x = (4 ± 2√19) / (-6)We can simplify the expression further:x = -2/3 ± (√19 / 3)Therefore, the solutions to the quadratic equation 0 = -3x² - 4x + 5 in simplest radical form are:x = (-2 ± √19) / 3The solutions to the quadratic equation 0 = -3x² - 4x + 5 in simplest radical form are x = (-2 + √19) / 3 and x = (-2 - √19) / 3.
To find the solutions to the quadratic equation 0 = -3x² - 4x + 5, we can use the quadratic formula: x = (-b ± √(b² - 4ac)) / (2a).
Comparing the equation to the standard quadratic form ax² + bx + c = 0, we have a = -3, b = -4, and c = 5.
Plugging these values into the quadratic formula, we get:
x = (-(-4) ± √((-4)² - 4(-3)(5))) / (2(-3))
= (4 ± √(16 + 60)) / (-6)
= (4 ± √76) / (-6)
= (4 ± 2√19) / (-6)
= -2/3 ± (1/3)√19
Therefore, the solutions to the quadratic equation are:
x = -2/3 + (1/3)√19 and x = -2/3 - (1/3)√19
In simplest radical form, the solutions are:
x = (-2 + √19) / 3 and x = (-2 - √19) / 3.
These expressions cannot be further simplified since the square root of 19 is not a perfect square.
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Which set of numbers are integers but not whole numbers or natural numbers?
Step-by-step explanation:
C
Consider a circle whose equation is x2 + y2 – 2x – 8 = 0. Which statements are true? Select three options.
The radius of the circle is 3 units.
The center of the circle lies on the x-axis.
The center of the circle lies on the y-axis.
The standard form of the equation is (x – 1)² + y² = 3.
The radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.
The three true statements are:
1. The radius of the circle is 3 units.
2. The center of the circle lies on the x-axis.
3. The radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.
To determine the properties of the circle with the equation [tex]x^2 + y^2 - 2x - 8 = 0,[/tex] let's analyze the given options:
The radius of the circle is 3 units:
To find the radius, we need to rewrite the equation in standard form, which is [tex](x - h)^2 + (y - k)^2 = r^2.[/tex]
Comparing the given equation to the standard form, we can determine the center and radius.
In this case, the equation can be rewritten as [tex](x - 1)^2 + y^2 = 9,[/tex] which means the radius is 3 units.
Therefore, this statement is true.
The center of the circle lies on the x-axis:
From the standard form of the equation, we can see that the x-coordinate of the center is 1.
Since the y-coordinate is 0 in the equation, the center lies on the x-axis. Thus, this statement is true.
The center of the circle lies on the y-axis:
Since the y-coordinate of the center is not 0 but rather represented by [tex]y^2,[/tex] the center does not lie on the y-axis.
Therefore, this statement is false.
The standard form of the equation is[tex](x - 1)^2 + y^2 = 3:[/tex]
The given equation can indeed be rewritten as [tex](x - 1)^2 + y^2 = 9,[/tex] as mentioned earlier, representing a circle with a radius of 3.
However, the statement incorrectly specifies a radius of 3 instead of 9. Thus, this statement is false.
The radius of this circle is the same as the radius of the circle whose equation is[tex]x^2 + y^2 = 9:[/tex]
The circle described by the equation [tex]x^2 + y^2 = 9[/tex] has a radius of 3 units. Comparing this to the circle in question, which also has a radius of 3 units, we can conclude that the statement is true.
Therefore, the three true statements are:
The radius of the circle is 3 units.
The center of the circle lies on the x-axis.
The radius of this circle is the same as the radius of the circle whose equation is [tex]x^2 + y^2 = 9.[/tex]
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The diagram shows a cuboid. 8 cm 15 cm 20 cm What is the volume of the cuboid?
Answer:
The answer is 2400 cm^3
Step-by-step explanation:
You just need to multiply the dimensions
Answer:
2400 cm³
Step-by-step explanation:
Volume of cuboid = length × width × height
Volume = 8 cm × 15 cm × 20 cm
Volume = 2400 cm³
So, the volume of the cuboid is 2400 cm³
In the following figure, assume that a, b, and c = 5, e = 12, and d = 13. What is the area of this complex figure? Note that the bottom triangle is a right triangle. The height of the equilateral triangle is 4.33 units.
Answer:
The area of the complex figure is approximately 210.92 square units.
Step-by-step explanation:
Let's calculate the area of the complex figure with the given information.
We can break the figure down into three components: an equilateral triangle, a right triangle, and a rectangle.
1. Equilateral Triangle:
The height of the equilateral triangle is given as 4.33 units. We can calculate the area using the formula:
Area of Equilateral Triangle = (base^2 * √3) / 4
In this case, the base of the equilateral triangle is also the length of side d, which is given as 13 units.
Area of Equilateral Triangle = (13^2 * √3) / 4
Area of Equilateral Triangle ≈ 42.42 square units
2. Right Triangle:
The right triangle has two sides with lengths a (5 units) and b (5 units), and its hypotenuse has a length of side c (also 5 units).
Area of Right Triangle = (base * height) / 2
In this case, both the base and height of the right triangle are the same and equal to a or b (5 units).
Area of Right Triangle = (5 * 5) / 2
Area of Right Triangle = 12.5 square units
3. Rectangle:
The rectangle has a length equal to side d (13 units) and a width equal to side e (12 units).
Area of Rectangle = length * width
Area of Rectangle = 13 * 12
Area of Rectangle = 156 square units
Now, to get the total area of the complex figure, we add the areas of each component:
Total Area = Area of Equilateral Triangle + Area of Right Triangle + Area of Rectangle
Total Area = 42.42 + 12.5 + 156
Total Area ≈ 210.92 square units
Therefore, the area of the complex figure is approximately 210.92 square units.
A graph represents the perimeter y in units for an equilateral triangle with side length x units the slope of the line is 3 and the y intercept is 0
The slope and intercept in this situation is meant as explained below.
We know that,
The linear equation in slope intercept form is equal to y = mx + b, where m is the slope, b is the y-intercept.
In this problem, y is the perimeter in units, x is the side length of a equilateral triangle.
we have,
m = 3
b = 0
substitute
The linear equation is y = 3x,
It is a proportional relationship because the line passes through the origin.
The slope is, m = 3 units / 1 units
That means, the ratio of perimeter of triangle to side length of triangle is 3:1. The y-intercept is 0. Remember that, the y-intercept is the value of y when the value of x is equal to zero.
In this context, the y-intercept is the value of the perimeter when the value of the side length is equal to zero. So, the value of the perimeter is 0 when the value of side length is 0.
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Although part of your question is missing, you might be referring to thid full question:
“ Explain what the slope and intercept mean in each situation. A graph represents the perimeter, y, in units, for an equilateral triangle with side length x units. The slope of the line is 3 and the y-intercept is 0”.
Which of the following best describes the lines y-3x=4x and 6-2y=8x
○perpendicular
○parallel
○skew
○intersecting
Answer:
Intersecting (fourth answer choice)
Step-by-step explanation:
If the lines are perpendicular, parallel, or intersecting, they are not skew. Thus, we need to check if the lines can be classified as either perpendicular, parallel, or intersecting first. If the lines are classified as neither, then they are skew.First, let's convert both lines to slope-intercept form, whose general equation is y = mx + b, where
m is the slope,and b is the y-intercept.Converting y - 3x = 4x to slope-intercept form:
(y - 3x = 4x) + 3x
y = 7x
Thus, the slope of this line is 7 and the y-intercept is 0.
Converting 6 - 2y = 8x to slope-intercept form:
(6 - 2y = 8x) - 6
(-2y = 8x - 6) / -2
y = -4x + 3
Thus, the slope of this line is -4 and the y-intercept is 3.
Checking if y = 7x and y = -4x + 3 are perpendicular lines:
The slopes of perpendicular lines are negative reciprocals of each other.We can show this in the following formula:
m2 = -1 / m1, where
m1 is the slope of one line,and m2 is the slope of the other line.Thus, we only have to plug in one of the slopes for m1. Let's do -4.
m2 = -1 / -4
m2 = 1/4
Thus, the slopes 7 and -4 are not negative reciprocals of each other so the two lines are not perpendicular.
Checking if y = 7x and y = -4x + 3 are parallel lines:
The slopes of parallel lines are equal to each other.
Because 7 and -4 are not equal, the two lines are not parallel.
Checking if the lines intersect:
The intersection point of two lines have the same x and y coordinate. To determine if the two lines intersect, we treat them like a system of equations.Method to solve the system: Elimination:
We can multiply the first equation by -1 and keep the second equation the same, which will allow us to:
add the two equations, eliminate the ys, and solve for x:-1 (y = 7x)
-y = -7x
----------------------------------------------------------------------------------------------------------
-y = -7x
+
y = -4x + 3
----------------------------------------------------------------------------------------------------------
(0 = -11x + 3) - 3
(-3 = -11x) / 11
3/11 = x
Now we can plug in 3/11 for x in y = 7x to find y:
y = 7(3/11)
y = 21/11
Thus, x = 3/11 and y = 21/11
We can check our answers by plugging in 3/11 for x 21/11 for y in both y = 7x and y = -4x + 3. If we get the same answer on both sides of the equation for both equations, the lines intersect:
Checking solutions (x = 3/11 and y = 21/11) for y = 7x:
21/11 = 7(3/11)
21/11 = 21/11
Checking solutions (x = 3/11 and y = 21/11) for y = -4x + 3:
21/11 = -4(3/11) + 3
21/11 = -12/11 + (3 * 11/11)
21/11 = -12/11 + 33/11
21/11 = 21/11
Thus, the lines y = 3x = 4x and 6 - 2y = 8x are intersecting lines (the first answer choice).
This also means that lines are not skew since lines had to be neither perpendicular nor parallel nor intersecting to be skew.
Help, please !!!!
A scatter plot is shown on the coordinate plane.
scatter plot with points at 1 comma 9, 2 comma 7, 3 comma 5, 3 comma 9, 4 comma 3, 5 comma 7, 6 comma 5, and 9 comma 5
Which two points would a line of fit go through to best fit the data?
(1, 9) and (9, 5)
(1, 9) and (5, 7)
(2, 7) and (4, 3)
(2, 7) and (6, 5)
Answer:
(2,7) and (6,5)
Step-by-step explanation:
The line of best fit would be approximately:
y = -.4x + 8
(1,9)
9 = -.4(1) + 8
9 = 7.6
(9,5)
y = -.4x + 8
5 = -.4(9) + 8
5 = 4.4
(5,7)
y = -.4x + 8
7 = -.4(5) + 8
7 = 6
(2,7)
y = -.4x + 8
7 = -.4(2) + 8
7 = 7.2
(4,3)
y = -.4x + 8
3 = -.4(4) + 8
3 = 6.4
(6,5)
y = -.4x + 8
5 = -.4(6) + 8
5 = 5.6
(BRAINLIEST AND 95 PTS TO CORRECT ANSWER!! PLS HELP!!) Part B: A student would like to show their teacher that they have practiced long enough for the day. Which measure of center should the student give to their teacher? Explain your answer. (2 points)
The measure of center that the student should give to their teacher is the median.
What is median, in statistics?In statistics, the median is a measure of central tendency that represents the middle value in a dataset when it is ordered from least to greatest. It divides the dataset into two equal halves, where half the values are smaller than the median and half are larger.
The median is useful because it is not influenced by extreme values or outliers in the dataset, unlike the mean (average). It provides a representative value that indicates the central position of the data.
The median is a better measure of center in this case since the data is skewed. The value of median is not affected by skewness
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Given f(x)=5x and g(x) = 1/x-5 which value is in the domain of f g? (5x in the problem has that one symbol) (this is platoweb)
Answer:
f(x)=5x
g(x)=1/x-5
f(g)=5(1/x-5)
f(x)=5/x- 25
therefore domain is x=0
Question 1 of 10
Which of the following steps were applied to ABC obtain SA'EC?
Ä
OA Shifted 4 units left and 4 units up
B. Shifted 2 units left and 2 units up
OC. Shifted 2 units left and 4 units up
OD. Shifted 4 units left and 2 units up
Answer:
C
Step-by-step explanation:
just look at point A and the difference to A'.
A was moved 2 units to the left and 4 units up to get A'.
and the same happened, of course, to all other points of the triangle.
so, C is correct.
1,020.50375 rounded to the nearest tenth
Rounding the given value to the nearest tenth would be 1020.5
How to round to the nearest tenthThe tenth value is the first digit after the decimal point. Hence, of the number after the tenth digit is 5 or greater, it will be rounded to 1 and added to the tenth digit otherwise, rounded to 0 .
Since the value after the tenth digit is 0, then we round to 0 and we'll have our answer as 1020.5.
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The surface area of a pyramid is the sum of the areas of the lateral faces and the area of the base.
O False
O True
Answer: True
Step-by-step explanation:
The lateral faces are the triangular faces that connect the apex of the pyramid to the edges of the base. The area of each lateral face can be calculated using the formula for the area of a triangle, which is [tex]\frac{1}{2} \times b \times h[/tex]. The area of the base is simply the area of the polygon that forms the base of the pyramid.
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The surface area of a pyramid is the sum of the areas of the lateral faces and the area of the base. (True or False)
Answer:The correct answer is True.
Explanation:The surface area of a pyramid is the sum of the areas of the lateral faces and the area of the base. This can be represented by the formula:
[tex]\qquad\qquad\Large\boxed{\rm{\:SA = B + LA\:}}[/tex]
The lateral faces are the faces that are not the base, so their areas are calculated using the formula for the area of a triangle. The area of the base is calculated using the appropriate formula depending on the shape of the base.
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Since he was 21 years old, Ben has been depositing $200 at the end of each month into a tax-free retirement account earning interest at the rate of 3.5%/year compounded monthly. Larry, who is the same age as Ben, decided to open a tax-free retirement account 5 years after Ben opened his. If Larry's account earns interest at the same rate as Ben's, determine how much Larry should deposit each month into his account so that both men will have the same amount of money in their accounts at age 65. (Round your answer to the nearest cent.)
$
Using the future value formula and an equation, we can see that Larry must deposit $263.48 each month.
How much Larry should deposit each month?
To determine how much Larry should deposit each month into his account so that both men will have the same amount of money at age 65, we need to calculate the monthly deposit amount for Larry.
Let's break down the problem into steps:
Step 1: Calculate the number of months each person will be making deposits.
Both Ben and Larry will make monthly deposits for (65 - 21) * 12 = 528 months.
Step 2: Calculate the future value of Ben's account at age 65.
Using the formula for the future value of an ordinary annuity:
[tex]FV = P * [(1 + r)^n - 1] / r[/tex]
where:
FV = Future ValueP = Monthly deposit amountr = Monthly interest raten = Number of periods (months)Since Ben has been depositing $200 at the end of each month for 528 months, we can substitute the values into the formula:
[tex]FV_Ben = 200 * [(1 + 0.035/12)^{528} - 1] / (0.035/12)[/tex]
Step 3: Calculate the future value of Larry's account at age 65.
Larry started depositing 5 years after Ben, so he will only be making deposits for (65 - 21 - 5) * 12 = 456 months.
Using the same formula, we can calculate the future value for Larry:
[tex]FV_Larry = P * [(1 + 0.035/12)^{456} - 1] / (0.035/12)[/tex]
Step 4: Set up an equation to find the monthly deposit amount for Larry.
Since both Ben and Larry will have the same amount at age 65, we equate the future values:
FV_Ben = FV_Larry
[tex]200 * [(1 + 0.035/12)^{528} - 1] / (0.035/12) = P * [(1 + 0.035/12)^{456} - 1] / (0.035/12)[/tex]
Step 5: Solve the equation for P (the monthly deposit amount for Larry).
[tex]P = [200 * [(1 + 0.035/12)^{528} - 1] / [(1 + 0.035/12)^{456} - 1]\\\\P = 263.48[/tex]
That is how much he must deposit per month.
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Calculate continuous growth and decay
Question
In 2010 the Network Club membership was 2,500. With an annual growth rate of approximately 8%, compounded
continuously, what will the membership be in 2020?
Round the answer to the nearest whole number, and do not include the units in your answer.
Provide your answer below:
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Rounding to the nearest whole number, the membership of the Network Club in 2020 will be approximately 5,564.
Therefore, the correct answer is: E. 5,564.
To calculate the membership of the Network Club in 2020, we can use the continuous growth formula:
[tex]A = P \times e^{(rt)[/tex]
Where:
A is the final amount or membership in 2020,
P is the initial amount or membership in 2010,
e is the mathematical constant approximately equal to 2.71828,
r is the annual growth rate as a decimal,
t is the number of years.
Given:
P = 2,500 (membership in 2010),
r = 8% = 0.08 (annual growth rate),
t = 2020 - 2010 = 10 years (number of years).
Plugging in the values into the formula, we have:
[tex]A = 2,500 \times e^{(0.08 \times 10)}[/tex]
Calculating the exponent:
[tex]A = 2,500 \times e^{(0.8)[/tex]
Using a calculator, we find that[tex]e^{(0.8)[/tex] is approximately 2.22554.
Now, we can calculate the final amount A:
A ≈ 2,500 [tex]\times[/tex] 2.22554 ≈ 5,563.85
Therefore, the correct answer is: E. 5,564.
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Answer: The answer is 5564
Step-by-step explanation: P=I[tex]e^rt[/tex]=2500e^(0.08)(10)=5563.85
Sales at Glover's Golf Emporium have been increasing linearly. In their second business year, sales were $160,000
. This year was their seventh business year, and sales were $335,000
. If sales continue to increase at this rate, predict the sales in their eleventh business year.
The predicted sales in Glover's Golf Emporium's eleventh business year are $475,000.
To predict the sales in Glover's Golf Emporium's eleventh business year, we can use the concept of linear growth. We have two data points: sales in the second year ($160,000) and sales in the seventh year ($335,000).
Let's first find the annual increase in sales:
Increase in sales = Sales in the seventh year - Sales in the second year
Increase in sales = $335,000 - $160,000
Increase in sales = $175,000
Next, we need to determine the rate of increase per year. Since we have a linear growth pattern, we can calculate the average annual increase by dividing the total increase in sales by the number of years:
Average annual increase = Increase in sales / Number of years
Average annual increase = $175,000 / (7 - 2) years
Average annual increase = $175,000 / 5 years
Average annual increase = $35,000 per year
Now, we can predict the sales in the eleventh business year by adding the average annual increase to the sales in the seventh year:
Predicted sales in the eleventh year = Sales in the seventh year + (Average annual increase * Number of additional years)
Predicted sales in the eleventh year = $335,000 + ($35,000 * (11 - 7))
Predicted sales in the eleventh year = $335,000 + ($35,000 * 4)
Predicted sales in the eleventh year = $335,000 + $140,000
Predicted sales in the eleventh year = $475,000
Therefore, the predicted sales in Glover's Golf Emporium's eleventh business year are $475,000.
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Carter bought a new car and financed $13,000
to make the purchase. He financed the car for 36
months with an APR of 3.5%
. Assuming he made monthly payments, determine the total interest Carter paid over the life of the loan. Round your answer to the nearest cent, if necessary.
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Explanation:
Let's calculate the monthly payment
L = 13000 = loan amounti = interest rate per month in decimal formi = 0.035/12 = 0.0029167 approximatelyn = 36 monthsP = monthly payment
P = (L*i)/(1 - (1+i)^(-n))
P = (13000*0.0029167)/(1 - (1+0.0029167)^(-36))
P = 380.927266693234
P = 380.93
Various online calculators can confirm this. Search out "monthly payment calculator".
Side note: The monthly payment formula is based off of the present value annuity formula.
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Carter pays $380.93 per month for 36 months.
He pays back a total of 380.93*36 = 13,713.48 dollars.
Subtract off the loan amount to determine the total interest.
13,713.48 - 13,000 = 713.48