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4 years ago

Help please2x-3y=12find y if x is 0

1 answer:

7 0

For this, you simply plug in 0 for "x" and solve:

2(0) - 3y = 12 multiply 2x0 to get 0
0 - 3y = 12 0 - 3y is -3y
-3y = 12 Isolate your variable by diving both sides by -3
y = -4 you're left with y = -4

Answer: if x is 0, y is -4

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2. The cost that a carpet cleaning company charges is directly proportional to the number of rooms cleaned. The cost is $22 for

Artemon [7]

Let c represent the cost and r represent the number of rooms, then
a.) c = 22r

b.) 200 = 22r
r = 200/22 = 9.09 ≈ 9 rooms

c.) 200 - 40 = 22r
r = 160/22 = 7.27 ≈ 7 rooms

6 0

3 years ago

A rectangular prism with a volume of 3 cubic units is filled with cubes with side lengths of 1/4 unit how many 1/4 unit cubes do

Julli [10]

Answer:

192 cubes

Step-by-step explanation:

So all we need to do is:

1) Find the area of 1 cube.

2) Divide the large prism volume with this.

SO 1)

the volume of cube = Length * width * height = (1/4)^3 = 1/64

SO 2)

the volume of prism / the volume of cube = 3/(1/64) = 192

Answer: 192 cubes

7 0

4 years ago

Find the surface area of each figure. Round your answers to the nearest hundredth, if necessary

algol13

Answer

238π yd^2

Step-by-step explanation:

here's your solution

=> height of cylinder = 10 yd

=> radius of cylinder = 7 yd

=> formula to calculate surface area = 2πr(h + r)

=> putting the value of height and radius in formula

=> SA = 2*22/7*7(10+7)

=>. SA = 2*22*17

=> SA = 748 yd.sq

hope it helps

4 0

4 years ago

If TR = 11 ft, find the length of PS. Round to the nearest hundredth.

jonny [76]

The length of arc PS from the information given in the task content is; 31.5 ft.

<h3>What is the length of the arc PS?</h3>

It follows from the task content that;

Point T is the center of the circle and line TR is the radius of the circle.

Additionally, the angle subtended by arcPS = 180 - m<PS = 180 - 16 = 164⁰. This follows from the fact that line PR is a diameter.

On this note, the length of arc PS is;

arc PS = (164/360) × 2 × 3.14 × 11.

arc PS = 31.5ft.