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White raven [17]
2 years ago
8

Set up an equation and solve for the unknown number.

Mathematics
1 answer:
Luda [366]2 years ago
8 0
Let x be the unknown number.

4+x=2x
4=2x-x
x=4
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Step-by-step explanation:

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The volume of a cone is 108 pi cubic inches. Its height is 4 inches. What is the radius of the cone? Round answer to nearest ten
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Which of the following best describe(s) the diagonals of a rectangle. Select all that apply.
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At the movie theatre, child admission is $5.10 and adult admission is $9.70. On Thursday, 128 tickets were sold for a total sale
kvv77 [185]

Answer:

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Step-by-step explanation:

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x+y=128.

The cost of x children tickets is $5.10x and the cost of y adult tickets is $9.70y, so

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x=128-y,

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pickupchik [31]

Answer:

Step-by-step explanation:

or

Step-by-step explanation:

has:

1) amplitude=|a|

2) phase shift=b

3) period=2pi/c

d) vertical shift=d

--------------------------------------------------

You are given the amplitude is 2. This means a could either be 2 or -2.

You are given phase shift is -1/8. This means b is -1/8.

You are given the period is pi. So we need to solve pi=2pi/c.

pi=2pi/c

Dividing both sides by pi gives:

1=2/c

Multiply both sides by c gives:

c=2

The vertical shift is -2 so d=-2.

The equation could either be:

y=2cos(2(x-(-1/8)))-2

or

y=-2cos(2(x-(-1/8)))-2

Simplifying a little gives:

y=2cos(2x+1/4)-2

y=-2cos(2x+1/4)-2

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