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Biblioteka

11/10/2022-HW Variation & Review

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Posljednje ažuriranje about 3 years ago
32 questions

In case you want to refer back directly to the video, you can open it here:

(please note that #14 is INCORRECT on the notes and the video...the answer should be 13.5, not 12)

The filled in notes below may help you clarify which type of equation to use based on the question. This is also provided inside schoology.

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REVIEW

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Pitanje 1
1.

Translate into an equation to represent the relationship:

"w is directly proportional to v'

Pitanje 2
2.

Translate into an equation to represent the relationship:

"a varies inversely with b"

Pitanje 3
3.

Translate into an equation to represent the relationship:

"f varies jointly with g and h"

Pitanje 4
4.

Translate into an equation to represent the relationship:

"y varies jointly with x and the square root of z"

Pitanje 5
5.

Translate into an equation to represent the relationship:

"m varies directly with n squared and inversely with p"

Pitanje 6
6.

Translate into an equation to represent the relationship:

"n varies inversely as the square root of m and directly with p"

Pitanje 7
7.

"The volume (V) of gas varies directly as the temperature (T) and inversely as the pressure (P)." Which of the following represent the correct formula that represents this relationship?

Pitanje 8
8.

What type of variation is shown in the following equation? (type: direct, inverse, or joint in the answer box)

Pitanje 9
9.

What type of variation is shown in the following equation? (type: direct, inverse, or joint in the answer box)

Pitanje 10
10.

What type of variation is shown in the following equation? (type: direct, inverse, or joint in the answer box)

Pitanje 11
11.

What type of variation is shown in the following equation? (type: direct, inverse, or joint in the answer box)

Pitanje 12
12.

What type of variation is shown in the following equation? (type: direct, inverse, or joint in the answer box)

Pitanje 13
13.

What type of variation is shown in the following equation? (type: direct, inverse, or joint in the answer box)

Pitanje 14
14.

Suppose y varies directly with x and y = 17.5 when x = 21, find y when x = 39.

Pitanje 15
15.

Suppose y varies jointly with x and z. When y = 90, x = 2 and z = 9. Find x when y = 105 and z = 3.

Pitanje 16
16.

If c varies inversely with b and c = 4.75 when b = 38, find c when b = 50.

(enter your answer as a fraction or rounded to the hundreths place)

Pitanje 17
17.

If q is inversely proportional to r squared and q = 30 when r = 3, find r when q = 1.2

Pitanje 18
18.

If c varies jointly as a cubed and b squared and c = 25.6 when a = 2 and b = 4, find c when a = 4 and b = 7.

enter your answer as a decimal rounded to the tenths place

Pitanje 19
19.

A lever pivots on a support called a fulcrum. (as shown in the picture)

For a balanced lever, the distance d (in feet) an object is from the fulcrum varies inversely with the object's weight w (in pounds). An object weighing 150 pounds is placed 8 feet from a fulcrum. How far from the fulcrum must a 128 pound object be place to balance the lever?

(round your answer to the nearest tenths place, enter the number only (no units))

Pitanje 20
20.

The cost to print fliers for the opening of an art show varies directly with the number of copies. If it cost $45 to print 750 copies, what will be the total cost for 870 copies?

input your answer with as dollars and cents (like you would normally see it shown!!)

Pitanje 21
21.

The time it takes to fill a water tank varies inversely with the water rate of the hose. At 8 gallons per minute, a hose can fill the tank in 45 minutes. How long will it take to fill the same tank at 15 gallons per minute?

enter the number only (no units)

Pitanje 22
22.

The volume of a pyramid varies jointly with its height and the area of the base. A pyramid with a height of 16 feet and a base area of 78 square feet has a volume of 416 cubic feet. If a pyramid has a base area of 102 square feet and a volume of 238 cubic feet, find its height.

Just enter your answer (no units required)

Pitanje 23
23.

Find the quotient:

Give your answer in simplest form.

Pitanje 24
24.

Simplify:

Pitanje 25
25.

Find the sum/difference. Give your answer in simplest form.

Pitanje 26
26.

Find the sum/difference. Give your answer in simplest form.

Pitanje 27
27.

Solve:

input your answer using set notation

Pitanje 28
28.

Solve:

input your answer using set notation

Pitanje 29
29.

upload your pages of work here--page 1

Pitanje 30
30.

upload your pages of work here--page 2

Pitanje 31
31.

upload your pages of work here--page 3

Pitanje 32
32.

upload your pages of work here--page 4