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den301095 [7]
3 years ago
9

Solve the proportion 7/5=21/x

Mathematics
2 answers:
Paha777 [63]3 years ago
8 0

Answer:

15

Step-by-step explanation:

7/5=21/x

or, 7x=21*5

or, x=(21*5)/7

x=15

kondaur [170]3 years ago
3 0

Answer:

x=15

Step-by-step explanation:

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Complete the general form of the equation of a sinusoidal function having an amplitude of 4, a period of π , and a phase shift t
alex41 [277]

Answer:

4 sin (2x - 4).

Step-by-step explanation:

The amplitude of  sin x = 1 so our curve with amplitude 4 will have 4 sin x as part of the general form. To alter the period from 2pi to pi we multiply the x by 2, giving 4 sin 2x, Finally to get a phase shift of 2 to the right, we replace the x by x - 2.

Our formula is  4 sin (2(x - 2))

= 4 sin (2x - 4).

8 0
3 years ago
Which expression represents the perimeter of the
Svetllana [295]
Answer: 15x + 6
5x + 2x+3 = 7x+3
6x+4 + 7x+3 = 13x + 7
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3 years ago
The volume of a prism is 702 cubic inches of the length is 13 inches and the width is 6 inches what is the height
balu736 [363]

volume = L x W x H

702 = 13 x 6 x h

702 = 78 x h

702/78 = h

h = 9



8 0
3 years ago
(-2,3) and (-2,1) what is the answer
Angelina_Jolie [31]
There is not enough info to answer this question.

8 0
3 years ago
Read 2 more answers
Find the inverse of f (x) = x + 2 + 9
Brut [27]

Answer:

y = x - 11

Step-by-step explanation:

First, turn the f(x) into a y:

y = x + 2 + 9

Now, switch the x and y.

x = y + 2 + 9

Add like terms.

2  + 9 = 11

x = y + 11

Now, solve for y. Subtract 11 on both sides.

y = x - 11

5 0
3 years ago
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