Answer:17/4
Step-by-step explanation:
Solution:
Your problem → 2((1/8)+ 4) - ((3/6)*8)
2((18)+4)-((36)⋅8)
=2⋅(1/8)+4-((36)⋅8)
=2⋅(1+4×8)/8-((36)⋅8)
=2⋅(1+32)/8-((36)⋅8)
=2⋅(33/8)-((36)⋅8)
=2⋅(33/8)-((36)⋅8)
=(33/4)-((36)⋅8)
=(33/4)-(36⋅8)
=(33/4)-(12⋅8)
=(33/4)-12⋅8
=(33/4)-4
=(33/4)-4
=(33-4×4)/4
=(33-16)/4
=17/4
=4.25 (in decimal)
Step-by-step explanation:
In a school of 145 students, each was asked to choose one or more activities from sport, music and drama. 76 students choosr sport, 64 chose music and 40 students chose drama. 12 students chose both music and sport, 7 chose both sport and drama, and 21 chose both music and drama. How many students chose all three activities?
7 number of students chose all three activities.
To find out how many students chose all three activities, we need to subtract the number of students who chose two activities from the total number of students. There are 76 students who chose sport, 64 students who chose music, and 40 students who chose drama. 12 students chose both music and sport, 7 chose both sport and drama, and 21 chose both music and drama. We can subtract these two-activity choosers from the total number of students to find out how many chose all three activities: 145 - (12 + 7 + 21) = 105. Therefore, 7 students chose all three activities.
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Simplify this expression
Show you work using the CER strategy.
4(8x + 1)-6(1-8x)
4)
A basket contains four types of fruits. Cherries, Bananas, Green apples and water melons.
What is the proportion of
a) Cherries? b) green apples?
b) Ratio of water melons to bananas?
The proportion of green apples can be estimated in the same way: expressions Green apple proportion = (number of green apples) / (Total number of fruits)
what is expression ?In mathematics, you can multiply, divide, add, or subtract. An expression is formed as follows: Expression, number, and math operator Numbers, parameters, and functions make up a mathematical expression. It is possible to contrast phrases and expressions. Every mathematical statement that contains variables, numbers, and a mathematical action between them is referred to as an expression. For example, the phrase 4m + 5 is made up of the phrases 4m and 5, as well as the variable m from the provided equation, all separated by the mathematical sign +.
a) Because the basket contains four different types of fruits, the proportion of cherries can be computed as follows:
Cherry proportion = (number of cherries) / (Total number of fruits)
We can't compute the proportion of cherries without knowing how many fruits are in the basket.
b) The proportion of green apples can be estimated in the same way:
Green apple proportion = (number of green apples) / (Total number of fruits)
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Minimo común multiple de 18 30 42
Answer: El mínimo común múltiplo de 18, 30 y 42 es 630.
Step-by-step explanation:
j
Answer:
630. yes yes yyesss
2. A boat traveling at 30 miles per hour with a tow line of 400 feet will give a parasail rider a height of 300 feet.
a) Draw and label a diagram to represent this situation. (2 points)
b) What is the angle of elevation from the boat to the parasail rider? (5 points)
c) What is the horizontal distance from the parasail rider to the boat? (5 points)
d) What do you notice about the angle of elevation of this flight compared to the. anale of elevation of the flight described in Exercise 1? Use trigonometric functions to explain wny this is true. (10 points)
e) What conclusion can you draw about angles of elevation for parasailing boats traveling at the same speed? (10 points)2. A boat traveling at 30 miles per hour with a tow line of 400 feet will give a parasail rider a height of 300 feet.
a) Draw and label a diagram to represent this situation. (2 points)
b) What is the angle of elevation from the boat to the parasail rider? (5 points)
c) What is the horizontal distance from the parasail rider to the boat? (5 points)
d) What do you notice about the angle of elevation of this flight compared to the. anale of elevation of the flight described in Exercise 1? Use trigonometric functions to explain wny this is true. (10 points)
e) What conclusion can you draw about angles of elevation for parasailing boats traveling at the same speed? (10 points)
The angle of elevation is approximately 36.87 degrees and the horizontal distance is 264.6 feet
What is the angle of elevation from the boat to the parasail ridera.
The diagram is attached below;
b. We can use the tangent function to find the angle of elevation:
tan(θ) = opposite / adjacent
tan(θ) = 300 / 400
tan(θ) = 0.75
θ = tan^(-1)(0.75)
θ ≈ 36.87 degrees
So the angle of elevation from the boat to the parasail rider is approximately 36.87 degrees.
c. We can use the Pythagorean theorem to find the horizontal distance from the parasail rider to the boat:
d = √(400^2 - 300^2)
d ≈ 264.6 feet
So the horizontal distance from the parasail rider to the boat is approximately 265 feet.
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(-2,-9), m= -7/5 write an equation in point slope form for the line that passes through each point with the given slope, then graph the equation.
The line passes through the two points (-2,-9) and (3,-16).
We can write an equation in point-slope form using the following formula for the line passing through the point (-2,-9) and having a slope of m = -7/5:
y - y1 = m(x - x1)
where m is the slope of the line and (x1,y1) is the line's point.
Inputting the values provided yields:
y - (-9) = (-7/5)(x - (-2))
Simplifying:
y + 9 = (-7/5)(x + 2)
To get rid of the fraction, multiply both sides by 5. This gives us:
5y + 45 = -7(x + 2)
As we enlarge and rearrange, we obtain:
7x + 5y + 59 = 0
This is the line's standard form equation.
We can locate two points on the line and plot them to create a graph of the line. We can utilise the y-intercept, which is obtained by solving for y while setting x=0 in the equation:
7(0) + 5y + 59 = 0
5y = -59
y = -59/5
The y-intercept is therefore (0,-59/5). Using the slope, we may also locate a different point on the line:
m = -7/5
Beginning at (-2,-9), we can travel 7 units left and 5 units right to reach a different point:
(-2+5, -9-7) = (3, -16) (3, -16)
Hence, the line traverses both of the following two points: (3,-16).
Here is the line's graph:
|
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* |
\ |
\ |
\ |
\|
-------*-----------------
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3|
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2|
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1|
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|
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The answer is:
[tex]\sf{y+9=-\dfrac{7}{5}(x+2)}[/tex]
Work/explanation:
We need to determine the line's equation. I will begin by writing the equation in point slope form:
[tex]\mapsto\phantom{333}\sf{y-y_1=m(x-x_1)}[/tex]
where m = slope and (x₁,y₁) is the point
Plug in the data:
[tex]\sf{y-(-9)=-\dfrac{7}{5}(x-(-2)}[/tex]
Simplify
[tex]\sf{y+9=-\dfrac{7}{5}(x+2)}[/tex]
Hence, this is the equation.lighthouse sits at the edge of a cliff, as shown. A ship at sea level is 825 meters from the base of the cliff. The angle of elevation from sea level to the base of
he lighthouse is 37.2". The angle of elevation from sea level to the top of the lighthouse is 38.3°. Find the height of the lighthouse from the top of the cliff.
Do not round any intermediate computations. Round your answer to the nearest tenth.
Note that the figure below is not drawn to scale.
The height of the lighthouse from the top of the cliff is given as 25.3 cm
How to solve for the heighttan 37.2 = h / 825
h = 825 * 0.7590
h = 626.209
tan 38.3 = 626.209 + a / 825
825 tan 38.3 = 626.209 + a
651.55 = 626.209 + a
a = 651.55 - 626.209
a = 25 . 33 meters
Hence we can say that the height of the lighthouse from the top of the cliff is given as 25 . 33 meters
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Premise: All multiples of 9 are multiples of 3. Premise: 57 is a multiple of 3. Conclusion: 57 is a multiple of 9.
Answer:
The conclusion is false.
Step-by-step explanation:
[tex]\frac{57}{3} = 19\\\\\frac{9}{3} = 3[/tex]
Although 3 and 9 do share some multiples, they must be divisible by 3. For example. 36/3 = 12, and 12 is divisible by 3. However, 57/3 = 19, which is not divisible by 3.
Write an equation of the parabola that passes through the points in the table.
x y -8 -309 -5 -132 1 6 2 1 6 -99
Answer:
y = -2x² + 7x - 11
Step-by-step explanation:
To find the equation of a parabola that passes through the given points, we need to first determine the form of the equation.
A general form of a quadratic equation is y = ax^2 + bx + c, where a, b, and c are constants. To determine the values of a, b, and c, we substitute the coordinates of each point into the equation and solve the resulting system of equations.
Substituting the first point (-8, -309), we get:
-309 = a(-8)^2 + b(-8) + c
Substituting the second point (-5, -132), we get:
-132 = a(-5)^2 + b(-5) + c
Substituting the third point (1, 6), we get:
6 = a(1)^2 + b(1) + c
Substituting the fourth point (2, 1), we get:
1 = a(2)^2 + b(2) + c
Substituting the fifth point (6, -99), we get:
-99 = a(6)^2 + b(6) + c
Expanding the terms, we get a system of five equations:
64a - 8b + c = -309
25a - 5b + c = -132
a + b + c = 6
4a + 2b + c = 1
36a + 6b + c = -99
Solving the system of equations, we get:
a = -2
b = 7
c = -11
Therefore, the equation of the parabola that passes through the given points is:
y = -2x^2 + 7x - 11
So the answer is y = -2x² + 7x - 11. (^2 is just another version of ²)
Hope this helps!! I'm sorry if it's wrong. If you need more help, ask me! :]
A bag of peanuts could be divided among 8 children, 9 children, or 10 children with each getting the same number, and with 2 peanuts left over in each case. What is the smallest number of peanuts that could be in the bag?
A bag of peanuts could be divided among 8 children, 9 children, or 10 children with each getting the same number, and with 2 peanuts left over in each case. The smallest number of peanuts that could be in the bag is 26.
This is because 8 children could each get 3 peanuts and there would be 2 peanuts left over, 9 children could each get 2 peanuts and there would be 2 peanuts left over, and 10 children could each get 2 peanuts and there would be 2 peanuts left over.
Small number means a number that is insufficiently large to be statistically significant, as determined by the department. Counting numerals are included in whole numbers as well. Whole numbers begin at zero. As a result, the least whole number is 0. Even though zero has no value, it is employed as a placeholder.
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Which algebraic expression is equivalent to the expression below? 6(9 + 5x) + 14 A. 30x - 68 B. 30x + 68 C. 30x + 40 D. 5x + 68
Answer:
[tex]30x +68[/tex]
Step-by-step explanation:
[tex]6(9+5x)+14[/tex]
[tex]\text{Distribute the 6}[/tex]
[tex]30x +68[/tex]
Select the correct answer. what is the approximate distance between points t and u? round your answer to the nearest hundredth. a. 2.66 units b. 3 units c. 3.16 units d. 4 units
The approximate distance between points T and U is 3.16 units, rounded to the nearest hundredth.(option c)
The problem states that we need to find the approximate distance between points T and U, rounded to the nearest hundredth. To solve this problem, we can use the distance formula, which is derived from the Pythagorean theorem. The formula is given as:
distance = √[(x₂ - x₁)² + (y₂ - y₁)²]
Here, (x₁, y₁) and (x₂, y₂) represent the coordinates of the two points, and √ denotes the square root operation.
Now, let's apply this formula to find the distance between points T and U. Suppose that T has the coordinates (-2, 1), and U has the coordinates (-1, 4). Then, we can plug in these values into the formula and simplify:
distance = √[(-1 + 2)² + (4 - 1)²]
= √[(1)² + 3²]
= √(1 + 9)
= √10
≈ 3.16
Therefore, we can see that the correct answer is (c) 3.16 units.
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Sam rents a truck from a hire company.
The cost to rent the truck is directly proportional to the number of kilometres driven.
The rental cost to drive 200 km is $87.50.
What is the rental cost to drive 80 kilometres?
The rental cοst tο drive 80 km is $35.
We knοw that the rental cοst is directly prοpοrtiοnal tο the number οf kilοmeters driven. Let's call the rental cοst C and the number οf kilοmeters driven D. Then we can write:
C = kD
where k is the cοnstant οf prοpοrtiοnality. We need tο find the value οf k in οrder tο answer the questiοn.
We knοw that the rental cοst tο drive 200 km is $87.50, sο we can plug in these values and sοlve fοr k:
87.50 = k × 200
k = 87.50/200
k = 0.4375
Nοw that we knοw the value οf k, we can use the same equatiοn tο find the rental cοst tο drive 80 km:
C = kD
C = 0.4375 × 80
C = 35
Therefοre, the rental cοst tο drive 80 km is $35.
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(7.2 x 1017) x (7.5 x 10-9 X (3.6 x 10-8) x (2.5 x 1010) X
Answer:
Step-by-step explanation:
483278.4
PLEASE HELP!! I NEED HELP
Velocity is given by the change in the distance divided by the change in the time, hence the following equation is built to model the relationship between these three variables:
v = d/t.
The parameters for the trip are given as follows:
Distance of 230 miles.Time of 7 hours.Hence the velocity is obtained as follows:
230/7 = 32.86 miles per hour.
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Last night, while on patrol, Agent 008 came upon a spaceship! He hid behind a tree and watched a group of little space
creatures carry all sorts of equipment out of the ship. But suddenly, he sneezed. The creatures jumped back into their
ship and sped off into the night. 008 noticed that they had dropped something, so he went to pick it up. It was a
calculator! What a great find. He noticed that it had a LOG button, but he noticed something interesting: log 10 did
not equal 1! With this calculator, log 10≈ 0.926628408. He tried some more: log 100≈ 1.853256816 and
log 1000 2.779885224.
a. What base do the space creatures work in? Explain how you can tell.
b. How many fingers do you think the space creatures have?
(A) The basis in which the space work is done is around 2. The powers of 10's logarithmic values can be used to determine this. (b) They could have two fingers for each hand, giving infants a total of five fingers.
What is the purpose of logarithmic?a. The space creatures are most likely employed in a base other than base 10. The values of log 10, log 100, and log 1000 do not match the expected values for base 10, which should be 1, 2, and 3, respectively. Instead, the values given indicate that the base is slightly less than ten, because log 10 is less than one, log 100 is less than two, and log 1000 is less than three.
To be more specific, using the calculator's approximation, we can use the change of base formula to find the value of log base b for each of these numbers:
log base b of 10 = log 10 / log b ≈ 0.926628408
log base b of 100 = log 100 / log b ≈ 1.853256816
log base b of 1000 = log 1000 / log b ≈ 2.779885224
By dividing the known values of log 10, log 100, and log 1000, we can find log b:
0.473606797 log b = log 1000 / log 100
As a result, the space creatures are most likely based on 9.526.
b. It is impossible to determine how many fingers the space creatures have based solely on the calculator information and logarithm values. The space creatures' base could be related to the number of fingers they have, but we don't have enough information to tell.
The inverses of exponential functions, or those that "undo," the exponential functions, are the logarithmic functions.
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I need to know how to find the x,y, and z
Answer:
x =~ 31.2
y =~ 18
z =~ 9
Step-by-step explanation:
cos 30º = 27 / x
0.8660 = 27 / x
x = 27 / 0.8660
x =~ 31.18
w = height (smaller trinagle w, y, z)
tg 30º = w / 27
0.5774 = w / 27
w = 27 * 0.5774
w = 15.5898
tg 30º = z / 15.5898
0.5774 = z / 15.5898
z = 0.5774 * 15.5898
z = 9.00155052
cos 30º = 15.5898 / y
0.8660 = 15.5898 / y
y = 15.5898 / 0.8660
y =~ 18
in a class of 40 students,18 passed maths,19passed account,16 passed economics,5 passed math and accounts only,6maths only,9accounts only,2account and economics only,if each students offered at least one of the subjects:how many failed in all the subjects. (b) find the percentage number who failed in at least one of economics and mathematics. (c). calculate the probability that a student at random failed?
a. The number of students that failed in all subject is 4
b. The percentage of students who failed one of economic and mathematics is 5.2%
c. The probability that a student at random failed is 1/10
What is set?A set is defined as the collect of item with similarities.
n( of student that passed math only) = 6
n( of students that passed account only) = 9
n( of students that passed economics only) = 16-(4+3+2)
= 16-9 = 7
n ( of student that passed math and account only) = 5
n( of student that passed account and economics only) = 2
n ( of student that passed math and economics only) = 18-(5+3+y) = 6
= 18-8-y = 6
= 10-y = 6
y = 4
n( of students that passed all the three subjects) =19-( 5+2+x) = 9
= 19-7-x = 9
= 12 -x = 9
-x = -3
x = 3
a. Therefore no of student that failed all subject =
6+9+7+5+2+4+3+z = 40
36+z = 40
z = 40-36 = 4
b. Student that failed at least math and economics = 4+9 = 13
= 13/40 × 100 = 5.2%
c. probability that a student at random failed = 4/40 = 1/10
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Line A (y= 2x+4) is transformed into Line B(y=x-9) Which best describes the new slope and y-intercept?
The slope is __ and the line is shifted ___
complete the blanks
The line is 13 units to the right (or shifted by -13 units).
What is an equation?A mathematical statement known as an equation consists of two algebraic expressions separated by equal signs (=) on either side.
It demonstrates the equality of the relationship between the printed statements on the left and right.
Left side equals right side in all formulas.
To find the values of unknowable variables, which stand in for unknowable quantities, you can solve equations.
A statement is not an equation if it lacks the equals sign.
When two expressions have the same value, a mathematical statement known as an equation will include the symbol "equal to" between them.
According to our question-
The ratio of y to x, which indicates how many units change in y when a specific number of units change in x, is used to express a line's slope.
A has a slope of 2 (x factor) = 2/1.
and as a result, y moves 2 units while x moves 1 unit.
B has a slope of 1 = 1/1.
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Painters painted half of a wall yellow, their boss told them it was supposed to be painted red, they waited for it to dry and then started covering the yellow with red. At the end of the day, 5/6 of the yellow was painted red, how much of the whole wall had been painted red.
Answer: 1/6
Step-by-step explanation:
1/1 - 5/6
2 6-5/6
2 1/6
try
(x
-2y = 16)
(- 6x +5y =-26)
x
-2y = 16
-6x +5y = -26
=
0 |xo|y=
Answer: I belive the answer is 0lxoly+39.56
Step-by-step explanation:
SIKE
The number of eggs laid per year by a particular breed of chicken is normally distributed with a mean of 225
and a standard deviation of 10 eggs
There is a 9.1% chance that a chicken of this particular breed will lay 248 eggs in a year.
A normal distribution is a continuous probability distribution described by its mean (μ) and standard deviation (σ). The formula for a normal distribution is:
[tex]P(x) = (1/σ√2π) e^(-(x-μ)^2/2σ^2)[/tex]
In this case, the mean (μ) is 225 and the standard deviation (σ) is 10.
To calculate the probability of a specific number of eggs being laid, we plug the mean and standard deviation into the normal distribution formula. For example, to calculate the probability of a chicken laying 248 eggs:
P(248) = 0.091
This means that there is a 9.1% chance that a chicken of this breed will lay 248 eggs in a year.
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Graph the data in the table. Decide whether the graph is linear or nonlinear.
The given points of the graph represent a nonlinear relationship.
Define the term linear graph?A linear graph is a type of graph where the points plotted create a straight line when connected. The slope of a linear graph indicates how steep the line is, while the y-intercept indicates the point where the line crosses the y-axis.
If the given points (1,1), (2,2), (3,6), (4,24) form a linear or nonlinear relationship with and without plotting the graph, we can calculate the slope between each pair of points.
The slope of a line between two points [tex](x_{1} , y_{1})[/tex] and [tex](x_{2} , y_{2})[/tex] is given by the formula:
slope = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1}}[/tex]
Let's calculate the slope between the first two points (1,1) and (2,2):
slope = (2 - 1) / (2 - 1) = 1/1 = 1
Now, let's calculate the slope between the second and third points (2,2) and (3,6):
slope = (6 - 2) / (3 - 2) = 4/1 = 4
Next, let's calculate the slope between the third and fourth points (3,6) and (4,24):
slope = (24 - 6) / (4 - 3) = 18/1 = 18
As we can see, the slopes between the pairs of points are not equal. In fact, they are increasing at a faster and faster rate. Therefore, the relationship between the x and y values is nonlinear.
To determine the specific type of nonlinear relationship, we can try to fit a curve to the data points. In this case, we can see that the points follow an exponential pattern, where the y-values increase rapidly as x increases. The equation that fits this pattern is y = [tex]2^x[/tex].
Therefore, the given points (1,1), (2,2), (3,6), (4,24) represent a nonlinear relationship that follows the exponential function y = [tex]2^x[/tex].
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Given:
AC‾ \overline{AC}
AC
and
BD‾\overline{BD}
BD
bisect each other.
Prove:
△BEC≅△DEA\triangle BEC \cong \triangle DEA
△BEC≅△DEA.
As a result of angle-angle-side (AAS) alignment, we have ABO, DBO, and AEO, CEO.
To prove △BEC≅△DEA:
First, we can see that segment AC and segment BD intersect at point O, which is the point of intersection of the angle bisectors of △BED.
Since AC and BD are angle bisectors, they are perpendicular bisectors of each other, so they divide the angles of △BED into congruent angles.
This means that angle ABO is congruent to angle DBO, and angle AEO is congruent to angle CEO.
Since angle ABO and angle AEO are vertical angles, they are congruent.
Similarly, angle DBO and angle CEO are vertical angles, so they are congruent.
Therefore, we have △ABO≅△DBO and △AEO≅△CEO by angle-angle-side (AAS) congruence.
Since BE is common to both triangles, we can conclude that △BEC≅△DEA by side-angle-side (SAS) congruence.
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A 3-gallon container of laundry detergent costs $53.76. What is the price per cup?
4x+3y=21 and 4x+2y=16
Solve the simentaneous equations
the solution (x = 3/2, y = 5) satisfies both equations, and therefore it is the correct solution.
We can solve this system of equations using either substitution or elimination method.
Using substitution method:
From the second equation, we can solve for x in terms of y:
4x + 2y = 16
4x = 16 - 2y
x = 4 - (1/2)y
Substitute this expression for x into the first equation:
4x + 3y = 21
4(4 - (1/2)y) + 3y = 21
16 - 2y + 3y = 21
y = 5
Now, substitute y = 5 into either of the original equations to solve for x:
4x + 2y = 16
4x + 2(5) = 16
4x + 10 = 16
4x = 6
x = 3/2
Therefore, the solution to is x = 3/2 and y = 5.
We can check this solution by substituting x = 3/2 and y = 5 into both equations:
4x + 3y = 21
4(3/2) + 3(5) = 6 + 15 = 21
and 4x + 2y = 16
4(3/2) + 2(5) = 6 + 10 = 16
So the solution (x = 3/2, y = 5) satisfies both equations, and therefore it is the correct solution.
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Suppose a normal distribution has a mean of 62 and a standard deviation of
4. What is the probability that a data value is between 55 and 63? Round your
answer to the nearest tenth of a percent.
O A. 55.9%
O B. 56.9%
O C. 53.9%
O D. 54.9%
Answer:To solve this problem, we need to standardize the values of 55 and 63 to z-scores and then use the standard normal distribution table to find the area between those two z-scores.
The z-score for a value of 55 is:
z = (55 - 62) / 4 = -1.75
The z-score for a value of 63 is:
z = (63 - 62) / 4 = 0.25
Using a standard normal distribution table, we can find that the area to the left of z = -1.75 is 0.0401 and the area to the left of z = 0.25 is 0.5987. Therefore, the area between z = -1.75 and z = 0.25 is:
0.5987 - 0.0401 = 0.5586
To convert this area back to a percentage, we multiply by 100:
0.5586 * 100 ≈ 55.9%
Therefore, the answer is A. 55.9%.
Step-by-step explanation:
Which value represents a percentage between 11% and 17%?
F. 0.159
G. 0.013
H. 11/1,000
J. 6/100
Therefore , the solution of the given problem of percentage comes out to be F. 0.159.
Percentage : What is it?A% is a figure or integer that in statistics is shown as a percentage of 100. Additionally, the words "pct.," "pct.," and "pc" are rarely used. But even so, the "%" indicator is commonly used to denote it. There are no dimensions; the percentage total is flat. Percentages are really just numbers because the numerator is always 100. To indicate that a number is a percentage, either the percent mark (%) or the phrase "percent" must appear before the number.
Here,
Divide by 100 to transform a percentage to a decimal. Therefore, we must locate a decimal between 0.11 and 0.17 in order to determine the figure that corresponds to a percentage between 11% and 17%.
The choices are as follows:
=> F. 0.159
=> G. 0.013
=> H. 11/1,000
=> J. 6/100
The decimal 0.159 falls within this range (0.11 to 0.17), so the solution is F. 0.159.
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Suppose the credit limit on your credit card is $4,930. What is the largest balance you should carry on this card to maintain an acceptable ratio?
A.$2,807.25
B.$2,462.50
C.$2,119.90
D.$2,117.75
Therefore, the largest balance we should carry on this card to maintain an acceptable ratio is $2,117.75, which is option D.
The ratio's calculation method.By typically dividing two figures, ratios contrast them. If you were comparing one data point (A) to another data point, your formula would be A/B. (B). You are multiplying information A by information B, as indicated by this.
To maintain an acceptable credit utilization ratio, it is generally recommended to keep the balance on a credit card below 30% of the credit limit. In this case, the credit limit is $4,930, so we should aim to keep the balance below 30% of $4,930, which is:
0.3 * $4,930 = $1,479
Therefore, the largest balance we should carry on this card is $1,479.
None of the answer choices match this amount exactly, so we can calculate the ratio of each option to the credit limit to see which one is closest to 30%.
A. $2,807.25 / $4,930 ≈ 0.570 --> Not acceptable
B. $2,462.50 / $4,930 ≈ 0.500 --> Not acceptable
C. $2,119.90 / $4,930 ≈ 0.430 --> Not acceptable
D. $2,117.75 / $4,930 ≈ 0.429 --> Acceptable
Therefore, the largest balance we should carry on this card to maintain an acceptable ratio is $2,117.75, which is option D.
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Error Analysis Adding and subtracting fractions
In addition of fractions together student added the denominators together, which is the error in solution. You must have like denominators in order to add fractions together is the strategy for solution. Haley bought 7/8 pound of cheese.
We have a incorrect solution of problem consists addition and subtraction fractions. We have to identify error and solve problem correctly and also share a strategy for solution. Now the problem is defined as : Quantity of mozzarella cheese bought by Haley = [tex] \frac{3}{8} [/tex] pound
Quantity of parmesan cheese bought by Haley = [tex] \frac{1}{2} [/tex] pound
Total pound of cheese that she did bought = sum of parmesan cheese and mozzarella cheese
= [tex] \frac{3}{8} + \frac{1}{2} [/tex]
Incorrect work:
[tex] \frac{3}{8} + \frac{1}{2} = \frac{4}{10}[/tex] [tex]= \frac{2}{5} [/tex]
Identification and Explain the Error :
In the problem student correctly identified that this was addition of fractions however he was incorrect in solving. When adding fractions together you do not add denominators together.
He also forgot that you must have "like" denominators.
Correct Solution:
[tex] \frac{3}{8} + \frac{1}{2} [/tex]
For addition of fractions, make the same denominator in both of fractions. So, multiply the denominator and numentor in fraction 1/2 by 4.
[tex] = \frac{3}{8} + \frac{1 \times 4}{2\times 4} = \frac{3}{8} + \frac{4}{8} [/tex][tex] =\frac{7}{8} [/tex], which is the required solution.
Strategy: We do not add denominator together ever. You must have like denominators in order to add them together. Hence, Haley bought 7/8 pound of cheese.
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Complete question:
Error Analysis Adding and subtracting fractions :
Read the word problem. Look at the students work and solution. Identify the error and describe it. Solve the problem correctly. Then share a strategy this student could use to prevent the same error in the future. Haley bought 3/8 pound of mozzarella cheese and 1/2 pound of parmesan cheese. How many pound of cheese did she buy?
Incorrect work or solution : 3/8 + 1/2
= 4/10 = 2/5
Haley bought 2/5 pound of cheese.