The height of the rectangular prism is 4.4 inches
How to determine the areaThe formula for calculating the area of a rectangular prism is expressed with the equation;
A = wh
Such that the parameters of the formula are given as;
A is the area of the rectangular prismw is the width of the rectangular prismh is the height of the rectangular prismFrom the information given, we have that;
Area of the prism = 80 square inches
width of the rectangular prism = 18 square
Now, substitute the value, we have
80 = 18h
Divide both sides by the coefficient of the variable h, we have;
h = 80/18
divide the values
h = 4. 4 inches
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A searchlight is shaped like a paraboloid of revolution. if the light source is located 1 feet from the base along the axis of symmetry and the opening is 6 feet across, how deep should the searchlight be?
The searchlight should be 1/3 feet deep at the edge of the opening. Since the paraboloid is a continuous surface, the depth will increase gradually from the edge of the opening to the vertex at (0,0,1).
Determine the depth of the searchlight shaped like a paraboloid of revolution, we need to use the equation for the standard form of a paraboloid of revolution:
z = (x^2 + y^2) / (4f)
where z is the depth, x and y are the horizontal and vertical coordinates, and f is the focal length of the paraboloid.
We know that the light source is located 1 feet from the base along the axis of symmetry, which means that the vertex of the paraboloid is at (0,0,1).
We also know that the opening is 6 feet across, which means that the horizontal distance from one side of the opening to the other is 3 feet.
Using this information, we can find the value of f:
f = (d/2)^2 / 2r
where d is the diameter of the opening (6 feet), and r is the radius of curvature at the vertex (1 foot).
f = (6/2)^2 / 2(1) = 4.5 feet
Now we can plug in the values for x, y, and f to solve for z:
z = (x^2 + y^2) / (4f)
z = (x^2 + y^2) / (4(4.5))
z = (x^2 + y^2) / 18
Since the opening is 6 feet across, we know that the maximum value of x is 3 feet. Therefore, we can use the maximum value of y (also 3 feet) to find the depth at the edge of the opening:
z = (3^2 + 3^2) / 18
z = 6/18
z = 1/3 feet
So the searchlight should be 1/3 feet deep at the edge of the opening. However, since the paraboloid is a continuous surface, the depth will increase gradually from the edge of ×the opening to the vertex at (0,0,1).
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Segment cd is the mid segment of trapezoid wxyz what is the value of xy?
Since segment CD is the mid-segment of trapezoid WXYZ, it means that segment CD is parallel to both bases WX and YZ and it is also half the length of their sum. Therefore, we can use the mid-segment formula which states that the length of segment CD is equal to the average of the lengths of the bases WX and YZ.
So, we can write:
CD = (WX + YZ)/2
Since we want to find the value of XY, we need to know its length in terms of WX and YZ.
If we draw a diagonal of the trapezoid, say diagonal WZ, it will divide the trapezoid into two triangles, namely triangle WXY and triangle ZYX.
We know that the mid-segment CD is also the median of triangle WZY, so it divides it into two equal areas.
Therefore, the area of triangle WXY is equal to the area of triangle ZYX.
We can write:
1/2 * WX * CD = 1/2 * YZ * CD
Simplifying this equation by dividing both sides by CD, we get:
1/2 * WX = 1/2 * YZ
Multiplying both sides by 2, we get:
WX = YZ
Therefore, the trapezoid WXYZ is actually an isosceles trapezoid with equal bases WX and YZ.
So, we can substitute WX for YZ in the formula for CD:
CD = (WX + WX)/2
Simplifying this equation, we get:
CD = WX
Therefore, the length of segment XY is equal to the length of the shorter base of the trapezoid, which is WX.
So, the value of XY is equal to the value of WX, and we can conclude that XY = WX.
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A gym offers a trial membership for 2 months. It discounts the regular monthly fee, f, by $15. Logan would like to sign up if the total price of the trial membership is less than $60. Which inequality could help Logan determine if he would like to sign up?
If he would like to sign up, then the inequlity could help Logan is defined as 2x ≤ 30, where, x --> monthly fee.
Inequality is defined as the 'not equal'. An inequality is a statement that shows a non-equal comparison between two numbers or mathematical expressions and expresses relationship between them. The symbols used for showing inequality are <, > , ≤, ≥. We have a gym offers a 2 months trials membership. The discounts the regular monthly fee, f
= $ 15
Now, Logan interested to sign up. Total price trial membership is less than $60. Let the total price of trial membership and regular monthly fee be P dollars and x dollars respectively. So, P ≤ $60 and P
= 2x - 2×15 = 2x - 30
If he would like to sign up, then the inequlity could help Logan is defined as below, 2x - 30 ≤ 60. Hence, required inequlity is 2x ≤ 30.
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For thousands of years, gold has been considered one of the Earth's most precious metals. One hundred percent pure gold is 24-karat gold, which is too soft to be made into jewelry. Most gold jewelry is 14-karat gold, approximately 58% gold. If 18 karat-gold is 75% gold and 12-karat gold, how much of each should be used to make a 14-karat gold bracelet weighing 500 grams
The solution is: 14 karat gold is 58.3333...% gold
We have given that;
75% gold and 50% gold and we need to make 200 grams of 58.3333...% gold.
Since, A percentage is a number or ratio that can be expressed as a fraction of 100. A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%", although the abbreviations "pct.", "pct" and sometimes "pc" are also used. A percentage is a dimensionless number; it has no unit of measurement.
Here, we have,
A) x + y = 200
B) .75x + .50y = ( (14/24) * 200)
We multiply equation B) by -1.3333... and get
B) -x -.6666...y = -155.5555... then adding A)
A) x + y = 200 we get
.3333...y = 44.4444...
y = 133.3333... grams 12 karat gold
x = 66.6666... grams 18 karat gold
Double-Checking the answer
133.3333... * .5 = 66.6666...
66.6666 * .75 = 50.0000...
Hence, Concentration of final solution = (66.6666... + 50) / 200 = 58.3333...% which is 14 karat gold
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Are △abc and △def similar triangles? choose all that apply.
no, the corresponding sides are not proportional.
yes, the corresponding sides are proportional.
yes, the corresponding angles are all congruent.
no, the corresponding angles are not congruent.
assessment navigation
△ABC and △DEF are similar triangles if they have corresponding sides that are proportional and the corresponding angles are all congruent. Thus, the options that are applied are B and C.
Similar shapes are enlargements or shortening of other shapes using a scale factor.
Two triangles are said to be similar if the corresponding sides are proportional and the corresponding angles are the same. There are the following similarity criteria:
1. AA or AAA where all the angles are equal
2. SSS where all the sides are proportional to the corresponding sides
3. SAS where the corresponding sides and the angle between are proportional and congruent.
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3. Peter throws a dice and spins a coin 150 times as part of an experiment. He records 71 heads, and a six 21 total times. On 68 occasions, he gets neither a head nor a six. Complete the table. Roll a b Not a six Total Head Tail Totals
After evaluating the given question the number of rolls that were both heads and sixes is 142, under the condition that Peter throws a dice and spins a coin 150 times.
Here we have to depend on the principle of probability,
Its given that he recorded 71 heads, and a six 21 total times.
Then,
| Roll | A (dice) | B (coin) | Not a six | Total |
|------|----------|----------|-----------|-------|
| Head | | | | |
| Tail | | | | |
| Total| | | | |
To find the number of rolls that were tails, we can subtract the number of heads from the total number of rolls:
150 - 71 = 79
So we can put in the Tail row with 79.
Now to find the number of roll s that were both heads and sixes, we can add up the number of heads and sixes and then subtract the number of rolls that were both heads and sixes
21 + 71 - x = y
Here
x = number of rolls that were both heads and sixes
y = total number of rolls that were either heads or sixes .
We know that there were 71 heads and 21 sixes, so
y = 71 + 21 = 92.
There were 68 rolls that were neither heads nor sixes,
so
x + y = 150 - 68 = 82.
Solving for x, we get:
x = y - 21 + 71
x = 92 - 21 + 71
x = 142
Lets fill the table
| Roll | A (dice) | B (coin) | Not a six | Total |
|------|-------|-------|-----------|-------|
| Head | - | 71 | - | 71 |
| Tail | - | 79 | - | 79 |
| Total| - | 150 | 68 | - |
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find the line parallel to y=4x+1 that includes the point (-2, -5)
y=4x+3
Parallel lines have the same gradient - 4x
substitute the x and y values from the coordinates into y=mx+c
so
-5=(4×-2)+c
-5=-8+c
c=3
therefore, the answer is y=4x+3
Savas easybrigde use the gcf and the distributive property to find the sum.
22 + 33
write each number as a product using the gcf as a factor, and apply the distributive property.
22 + 33 = ?
To use the GCF and distributive property to find the sum of 22 + 33, we first need to identify the GCF of both numbers, which is 11.
We can then write each number as a product using the GCF as a factor: 22 = 11 x 2 and 33 = 11 x 3. Next, we can apply the distributive property by multiplying the GCF by the sum of the other factors in each number: 11 x (2 + 3).
Finally, we can simplify the expression by adding the sum of the other factors, which is 5: 11 x 5 = 55. Therefore, the sum of 22 + 33 using the GCF and distributive property is 55.
In summary, to find the sum of 22 + 33 using the GCF and distributive property, we first identify the GCF as 11 and write each number as a product using the GCF as a factor.
We then apply the distributive property by multiplying the GCF by the sum of the other factors in each number. Finally, we simplify the expression by adding the sum of the other factors and arrive at the answer of 55. This method can be helpful when working with larger numbers or more complex expressions.
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What is the exact solution to the system of equations?
Answer:
Step-by-step explanation:
the point at which the lines representing the linear equations intersect
The quantity of a product manufactured by a company is given by Q = aK^{0.6}L^{0.4}
where a is a positive constant, Kis the quantity of capital and Listhe quantity of labor used. Capital costs are $44 per unit, labor costs are $11 per unit, and the company wants costs for capital and labor combined to be no higher than $330. Suppose you are asked to consult for the company, and learn that 6 units each of capital and labor are being used, (a) What do you advise? Should the company use more or less labor? More or less capital? If so, by how much?
The company should increase the quantity of capital used from 6 units to 3 units, an increase of 3 units.
The cost of capital and labor can be expressed as:
C = 44K + 11L
The company wants to limit the cost of capital and labor to $330:
44K + 11L ≤ 330
Substituting Q = aK^{0.6}L^{0.4} into the inequality, we get:
44K + 11L ≤ 330
44K + 11(Q/aK^{0.6})^{0.4} ≤ 330
44K^{1.6} + 11(Q/a)^{0.4}K ≤ 330
Solving for K, we get:
K ≤ (330 - 11(Q/a)^{0.4}) / 44K^{1.6}
Substituting K = 6, Q = aK^{0.6}L^{0.4}, and solving for L, we get:
Q = aK^{0.6}L^{0.4}
Q/K^{0.6} = aL^{0.4}
L = (Q/K^{0.6})^{2.5}/a
Substituting Q = a(6)^{0.6}(6)^{0.4} = 6a into the equation, we get:
L = (6/a)^{0.4}(6)^{2.5} = 9.585a^{0.6}
Therefore, the company is currently using 6 units each of capital and labor, and the total cost of capital and labor is:
C = 44(6) + 11(6) = 330
This means that the company is already using the maximum allowable cost. To reduce the cost, the company should use less labor or less capital.
To determine whether to use more or less labor, we can take the derivative of Q with respect to L:
∂Q/∂L = 0.4aK^{0.6}L^{-0.6}
This is a decreasing function of L, so as L increases, the quantity of product Q produced will decrease. Therefore, the company should use less labor.
To determine how much less labor to use, we can find the value of L that would reduce the cost to the maximum allowable level of $330:
44K + 11L = 330
44(6) + 11L = 330
L = 18
Therefore, the company should reduce the quantity of labor used from 6 units to 18 units, a decrease of 12 units.
To determine whether to use more or less capital, we can take the derivative of Q with respect to K:
∂Q/∂K = 0.6aK^{-0.4}L^{0.4}
This is an increasing function of K, so as K increases, the quantity of product Q produced will increase. Therefore, the company should use more capital.
To determine how much more capital to use, we can find the value of K that would reduce the cost to the maximum allowable level of $330:
44K + 11L = 330
44K + 11(18) = 330
K = 3
Therefore, the company should increase the quantity of capital used from 6 units to 3 units, an increase of 3 units.
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which graph represents the linear equation y= 1/2 x + 2
Answer:
The graph on the top right
Step-by-step explanation:
The slope-intercept form is y = mx + b
m = the slope
b = y-intercept
The equation is y = 1/2x + 2
The y-intercept in this equation is 2, meaning the graph has a point (0,2) on it. Looking at the options, the only graph that has a point (0,2) is the map on the top right, and that is the answer.
purab bought twice the number of rose plants that he had in his lawn. however, he threw 3 plants as they turned bad. after he planted new plants, there were total 48 plants in the garden. how many plants he had in his lawn earlier?
Purab initially had 17 rose plants in his lawn before buying the new ones.
Purab initially had a certain number of rose plants in his lawn. He bought twice that number, but had to discard 3 plants as they turned bad
After planting the new ones, there were a total of 48 plants in the garden.
To determine how many plants he had earlier, let's use a variable x to represent the initial number of plants.
Purab bought 2x plants, and after removing the 3 bad plants, he had (2x - 3) good plants.
Adding these to the initial number of plants, the equation becomes:
x + (2x - 3) = 48
Combining like terms, we get:
3x - 3 = 48
Next, we add 3 to both sides:
3x = 51
Finally, we divide by 3: x = 17
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You decide to work fewer hours per week, which results in an 8% decrease in your pay. what percentage increase in pay would you have to receive in order to gain your original salary again?
You would have to receive an approximately 8.696% increase in pay to regain your original salary after an 8% decrease.
To find the percentage increase in pay needed to regain your original salary after an 8% decrease, follow these steps:
1. Assume your original salary is 100%. After an 8% decrease, your salary becomes 100% - 8% = 92%.
2. Calculate the difference between your original salary (100%) and your current salary (92%). The difference is 100% - 92% = 8%.
3. To find the percentage increase needed to regain your original salary, divide the difference (8%) by your current salary (92%): 8% / 92% = 0.08696.
4. Multiply the result by 100 to convert it to a percentage: 0.08696 (100) = 8.696%.
So, you would have to receive an approximately 8.696% increase in pay to regain your original salary after an 8% decrease.
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What is the value of the expression below? (3 1/2 - 9 3/4) entre (-2.5)
PLEASE HELP
Answer:
Let's solve this in steps:
1. Convert mixed numbers to fractions:
```
3 1/2 = 7/2
9 3/4 = 39/4
```
2. Perform the subtraction:
```
7/2 - 39/4 = -11/4
```
3. Divide by -2.5:
```
-11/4 / -2.5 = 4.4
```
Therefore, the value of the expression is **4.4**.
I need helpp
5x+3=2x-15
Answer:
x = -6
Step-by-step explanation:
5x + 3 = 2x - 15
3x + 3 = -15
3x = -18
x = -6
Let's Check
5(-6) + 3 = 2(-6) - 15
-30 + 3 = -12 - 15
-27 = -27
So, x = -6 is the correct answer.
Answer:
x = -6
Step-by-step explanation:
Equation is 5x + 3 = 2x - 15
First, we can subtract the constants
5x = 2x - 18
Then, we can subtract 2x on both sides
3x = -18
Divide both sides by 3 to isolate x
x = -6
Quadrilateral ABCD is a square with diagonals AC and BD. If A(4, 9) and C(3, 2), find the slope of BD.
7 is the slope of BD in Quadrilateral.
What in arithmetic is a quadrilateral?
Four sides, four vertices, and four angles make up a quadrilateral, which is a two-dimensional form. Concave and convex are the two most common forms. Additionally, there are several subgroups of convex quadrilaterals, including trapezoids, parallelograms, rectangles, rhombus, and squares.
There are four closed sides to a quadrilateral. Quadrilaterals are the following figures: produced by Raphael. a quadrilateral form. The form features a single pair of parallel sides and no right angles.
points A(4, 9) and C(3, 2)
slope = y₂ - y₁/x₂ - x₁
= 2 - 9/3 - 4
= - 7/-1
= 7
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Need help please show work
Answer:
Add the lengths:
5x - 16 + 2x - 4 = 7x - 20
A speaker is in the shape of a cube with an edge length of 3. 5 inches. The speaker is sold in a package in the shape of a square prism with a base area of 16 square inches and a height of 4. 25 inches. How much empty space, in cubic inches, remains in the package after the speaker is placed in the package?
The volume of the cube-shaped speaker is 42.875 cubic inches. The volume of the package is 68 cubic inches. Subtracting the volume of the speaker from the volume of the package gives the empty space remaining, which is 25.125 cubic inches.
The volume of the cube-shaped speaker is given by V₁ = (edge length)³ = 3.5³ = 42.875 cubic inches.
The volume of the square prism-shaped package is given by V₂ = (base area) x (height) = 16 x 4.25 = 68 cubic inches.
Therefore, the empty space remaining in the package after the speaker is placed in it is V₂ - V₁ = 68 - 42.875 = 25.125 cubic inches.
So, the empty space remaining in the package is 25.125 cubic inches.
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Use the Generalized Power Rule to find the derivative of the function.
f(x) = (3x + 1)^5(3x - 1)^6
This is the derivative of the given function f(x) = (3x + 1)^5(3x - 1)^6 using the Generalized Power Rule.
To find the derivative of the function f(x) = (3x + 1)^5(3x - 1)^6 using the Generalized Power Rule, we will need to apply both the Product Rule and the Chain Rule.
The Product Rule states that if you have a function f(x) = g(x)h(x), then f'(x) = g'(x)h(x) + g(x)h'(x).
First, let's identify g(x) and h(x) in your function:
g(x) = (3x + 1)^5
h(x) = (3x - 1)^6
Next, we'll find the derivatives g'(x) and h'(x) using the Chain Rule, which states that if you have a function y = [u(x)]^n, then y' = n[u(x)]^(n-1) * u'(x).
For g'(x):
u(x) = 3x + 1
n = 5
u'(x) = 3
g'(x) = 5(3x + 1)^(5-1) * 3 = 15(3x + 1)^4
For h'(x):
u(x) = 3x - 1
n = 6
u'(x) = 3
h'(x) = 6(3x - 1)^(6-1) * 3 = 18(3x - 1)^5
Now, we apply the Product Rule:
f'(x) = g'(x)h(x) + g(x)h'(x) = 15(3x + 1)^4(3x - 1)^6 + (3x + 1)^5 * 18(3x - 1)^5
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3) Graph polygon G(-3,-2) R(-4,4) E(0,1) A(1, -2) T(-1, -3) and it’s image G’R’E’A’T’=R (GREAT)
A graph of polygon GREAT and its image after a counterclockwise rotation of 90° around the origin is shown in the image attached below.
What is a rotation?In Mathematics and Geometry, the rotation of a point 90° about the center (origin) in a counterclockwise (anticlockwise) direction would produce a point that has these coordinates (-y, x).
By applying a rotation of 90° counterclockwise around the origin to vertices W, the coordinates of the vertices of the image ΔA'B'C' are as follows:
(x, y) → (-y, x)
Ordered pair G = (-3, -2) → Ordered pair G' = (2, -3)
Ordered pair R = (-4, 4) → Ordered pair R' = (-4, -4)
Ordered pair E = (0, 1) → Ordered pair E' = (-1, 0)
Ordered pair A = (1, -2) → Ordered pair A' = (2, 1)
Ordered pair T = (-1, -3) → Ordered pair T' = (3, -1)
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7. The table shows the linear relationship between the total amount Mrs. Jacobs will be
charged for a skating party and the number of children attending.
Which equation best represents y, the total amount in dollars Mrs. Jacobs will be
charged for
x number of children attending the skating party?
The equation that best represents the linear relationship between the total amount Mrs. Jacobs will be charged and the number of children attending the skating party is y = mx + b.
In this case, y represents the total amount in dollars that Mrs. Jacobs will be charged, x represents the number of children attending the party, m represents the slope of the line, and b represents the y-intercept.
To find the equation, we need to determine the slope and y-intercept from the table given. From the table, we can see that for every additional child attending the party, the total amount charged increases by $10. This means that the slope (m) of the line is 10.
To find the y-intercept (b), we can look at the table and see that when there are zero children attending the party, the total amount charged is $50. This means that the y-intercept is 50.
Putting it all together, the equation that best represents the linear relationship is y = 10x + 50.
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What is the volume of a right rectangular prism with a length of 4. 8 meters, a width of 2. 3 meters, and a height
of 0. 9 meters?
O4. 968 m3
O9. 936 m3
O 11. 94 m3
O 34. 86 m3
PLS ANSWER FAST I WILL GIVE BRAINIEST!!!!!
Answer:
Step-by-step explanation:
The volume of the given prism is 9.936 cubic meters, To calculate the volume of a right rectangular prism, we need to multiply its length, width, and height together.
Given that the length of the prism is 4.8 meters, the width is 2.3 meters, and the height is 0.9 meters, we can calculate the volume using the formula:
Volume = length x width x height
Volume = 4.8 m x 2.3 m x 0.9 m
Volume = 9.936 m^3
Therefore, the volume of the right rectangular prism is 9.936 cubic meters.
It is important to note that when we calculate volume, we are dealing with a three-dimensional space, and the units we use must be cubed (m^3 in this case). This is because we are measuring the amount of space occupied by the object in all three dimensions.
In summary, to find the volume of a right rectangular prism, we simply multiply its length, width, and height together. In this case, the volume of the given prism is 9.936 cubic meters.
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suppose you are playing poker with a non-standard deck of cards. the deck has 5 suits, each of which contains 12 values (so the deck has 60 cards total). how many 6-card hands are there, where you have at least one card from each suit?
The number of 6-card hands in which at least one card from each suit is equal to 8,184,220.
Total number of 6-card hands that can be formed from a deck of 60 cards is,
Using combination formula,
C(60, 6) = 50,063,860
Now, subtract the number of 6-card hands that do not contain at least one card from each suit.
There are 5 ways to choose the suit that will be missing from the hand.
Once this suit is chosen, there are 48 cards remaining in the other suits.
Choose 6 cards from this set, so the number of 6-card hands that do not contain any cards from the chosen suit is,
C(48, 6) = 12,271,512
Overcounted the number of hands that are missing more than one suit.
There are C(5, 2) ways to choose 2 suits that will be missing from the hand.
Once these suits are chosen, there are 36 cards remaining in the other 3 suits.
Choose 6 cards from this set, so the number of 6-card hands that do not contain any cards from the chosen suits is,
C(36, 6) = 1,947,792
We cannot have a 6-card hand that is missing more than 2 suits.
3 suits with no cards in the hand, which is not allowed.
Number of 6-card hands that have at least one card from each suit is,
C(60, 6) - 5×C(48, 6) + C(5, 2)×C(36, 6)
=50,063,860 - 5× 12,271,512 + 10 × 1,947,792
= 50,063,860 -61,357,560 + 19,477,920
= 8,184,220
Therefore, there are 8,184,220 of 6-card hands that have at least one card from each suit.
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Evaluate. (3/5)3 enter your answer by filling in the boxes.
the final answer is 27/125.
To evaluate [tex](3/5)^3[/tex], we simply need to multiply (3/5) by itself three times:
[tex](3/5)^3 = (3/5) * (3/5) * (3/5)[/tex]
To simplify, we can first multiply the numerators together and the denominators together:
[tex](3/5)^3 = 27/125[/tex]
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I need help with this problem just to write down a sentence on what it means
Point B is not the midpoint of line AC, because angle AOB is not half of angle AOC.
What is the value of angle AOB and angle BOC?If point B is the midpoint of line AC, then angle AOB must be equal to angle BOC.
The value of angle AOC is calculated as follows;
let angle AOC = θ
cos θ = 100 yds / 500 yds
cos θ = 0.2
θ = cos⁻¹ (0.2)
θ = 78.5⁰
The value of length AC is calculated as follows;
AC = √ (500² - 100²)
AC = 489.9
If point B is the midpoint, then AB = BC = 489.9/2 = 244.95
The value of angle AOB is calculated as follows;
tan β = AB/AO
tan β = 244.95/100
tan β = 2.4495
β = arc tan (2.4495)
β = 67.8⁰
Half of angle AOC = 78.5⁰/2 = 39.25⁰
β ≠ 39.25⁰
So point B is not midpoint of line AC, since angle AOB is not half of angle AOC.
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PLEASE HELP!!!!!!! Line M is represented by the following equation: x + y = −1 What is most likely the equation for line P so the set of equations has infinitely many solutions? (4 points) Question 5 options: 1) 2x + 2y = 2 2) 2x + 2y = 4 3) 2x + 2y = −2 4) x − y = 1
The equation for line P such that the system has an infinite number of solutions is given as follows:
3) 2x + 2y = -2.
How to obtain the equation?The first equation for the system of equations is given as follows:
x + y = -1.
A system of equations has an infinite number of solutions when the two equations are multiples.
Multiplying the equation by 2, we have that:
2x + 2y = -2.
Meaning that equation 3 is correct.
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A leaf blower was marked up 150% from an original cost of $80. Last Friday, Lee bought the leaf blower and paid an additional 7. 75% in sales tax. What was his total cost?
$
Lee's total cost for the leaf blower was $215.50.
First, let's find the selling price of the leaf blower before sales tax was added:
The leaf blower was marked up by 150%, so the selling price is:
= [tex]80 + (\frac{150}{100}) 80[/tex]
= 80 + 120
= 200
So the selling price of the leaf blower before sales tax was $200.
Next, we need to find the amount of sales tax that Lee paid. To do this, we need to multiply the selling price by the sales tax rate:
Sales tax = 7.75% ($200)
= 0.0775 ($200)
= $15.50
Finally, we can find Lee's total cost by adding the selling price and the sales tax:
Total cost = Selling price + Sales tax
= $200 + $15.50
= $215.50
Therefore, Lee's total cost for the leaf blower was $215.50.
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y’all please answer quick!!! :)
The mountain man ascends to the summit and then descends on the opposite side in a curved path, considering the route as a curve of a quadratic function Complete the following :
The man's path in pieces:
• Track direction "cutting hole":
•Route starting point: x=
• Path end point: x=
• The highest point reached by the man is the "head": (,)
• Maximum value:
• Y section:
•Axis of Symmetry Equation: x=
• the field:
• term:
Considering the route as a curve of a quadratic function, the information should be completed as follows;
Track direction "cutting hole": negative.Route starting point: x = -5.Path end point: x = 2.The highest point reached by the man is the "head": (-1, 4)Maximum value: 4Y section: distance or height.Axis of Symmetry Equation: x = -1The field: Area covered by the man's path.Term: x, y, a, h, and k.What is the vertex form of a quadratic equation?In Mathematics and Geometry, the vertex form of a quadratic function is represented by the following mathematical equation (formula):
y = a(x - h)² + k
Where:
h and k represents the vertex of the graph.a represents the leading coefficient.Based on the information provided about this quadratic function, we can logically deduce that a mathematical equation which quickly reveals the vertex of the quadratic function is given by:
y = a(x - h)² + k
0 = a(2.9 - (-1))² + 4
3.9a = -4
a = -4/3.9
a = -1.03
Therefore, the required quadratic function is given by:
y = a(x - h)² + k
y = -1.03(x - (-1))² + 4
y = -1.03(x + 1)² + 4
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
Each side y of a square is increased by 5 units. Which expression represents the number of square units in the area of the new square?
O 2y + 10
O y^2 + 10y + 25
O y^2 + 25
O y^2 + 10y + 10
The expression for the area of the new square is y² + 10y + 25.
How to find area?To find the expression that represents the area of the new square, we need to consider that when each side of a square is increased by 5 units, the new side length becomes y + 5. The area of the new square is then given by:
(New side length)² = (y + 5)²
Expanding the square, we get:
(y + 5)² = y² + 10y + 25
Therefore, the expression that represents the area of the new square is y² + 10y + 25.
So, the correct option is:
O y² + 10y + 25
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Danielle's basic cell phone rate each month is $29.95. add to that $5.95 for voice mail and $2.95 for text messaging. this past month danielle spent an additional c dollars on long distance. her total bill was $62.35how much did danielle spend on long distance?
Danielle spent $23.50 on long distance charges this past month.
To determine how much Danielle spent on long distance, we need to consider her basic cell phone rate, voice mail, and text messaging charges. Here is a step-by-step explanation:
1. Danielle's basic cell phone rate each month is $29.95.
2. She pays an additional $5.95 for voice mail.
3. She also pays $2.95 for text messaging.
4. Her total bill for the month was $62.35.
Now, let's calculate her total expenses without the long distance charges (c dollars):
$29.95 (basic cell phone rate) + $5.95 (voice mail) + $2.95 (text messaging) = $38.85
Since Danielle's total bill was $62.35, we can find out how much she spent on long distance by subtracting her total expenses without long distance charges from her total bill:
$62.35 (total bill) - $38.85 (total expenses without long distance) = $23.50
So, Danielle spent $23.50 on long distance charges this past month.
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