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inn [45]
3 years ago
5

Find the value of this expression if x=3

Mathematics
1 answer:
Anna [14]3 years ago
6 0

Answer:

6

Step-by-step explanation:

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The intensity, I, of a sound varies inversely with the square of the distance, r, from the source of the sound. Write an equatio
charle [14.2K]

Answer:The  equation relating I, r, and k is I =K/r²

Step-by-step explanation:

The intensity, I, of a sound varies inversely with the square of the distance, r, from the source of the sound can be written as

I ∝ 1/r²

Introducing the constant of proportionality, K we have that

I =K x 1/r²

Therefore , the  equation relating I, r, and k is I =K/r²

7 0
3 years ago
A, B and C did a test, A got 3/5 of
Fiesta28 [93]
<h3>Answer:</h3>

C, B, A

<h3>Explanation:</h3>

Simply change all the numbers to decimals

  • A is .6
  • B is .62
  • C is .625

After you put them in order from greatest to least. And the anwser is .625, .62, .6. Which is C, B, A.

4 0
3 years ago
Can someone please help me with this question
Liono4ka [1.6K]

Answer:

m = 9

Step-by-step explanation:

1) Find scale factor

12/8 = 3/2 = 1.5

2)  6x1.5 = 9

OR

1) Set up proportion -> 6/8 = m/12

2) Cross multiply -> 8m = 72

3) Divide both sides by 8

4) m = 9

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2 years ago
Please help! I will mark brainliest!
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C: small surf board is 9.6 ft tall

D: angle m corrosponds with d

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2 years ago
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If f(x)=3x^2-2x+4 and g(x)=5x^2+6x-8 find (f+g)(x)
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(3x^2-2x+4)+(5x^2+6x-8) - Combine like terms
8x^2+4x-4
(f+g)(x)=8x^2+4x-4
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3 years ago
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