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nignag [31]
3 years ago
5

Do the ratios 21:28 and 6:8 form a proportion?

Mathematics
1 answer:
Nezavi [6.7K]3 years ago
7 0

Answer:

Yes

Step-by-step explanation:

they are both equal to 3:4

21:28 can be reduced by 7

21/7=3

28/7=4

and 6:8 can be reduced by 2

6/2=3

8/2=4

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Answer:

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Let f(x)=x^2+2x+3 . What is the average rate of change for the quadratic function from x=−2 to x = 5?
miskamm [114]
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f(b) - f(a)
------------
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Here your function is f(x) = x^2 - 2x + 3.  Substituting b=5 and a=-2,
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Calculate           f(5) - [ f(-2) ]
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Your answer to this, if done correctly, is the "average rate of change of the function f(x) = x^2+2x+3 on the interval [-2,5]."
5 0
3 years ago
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AURORKA [14]

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Step-by-step explanation:

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3 0
2 years ago
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Step-by-step explanation:

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kow [346]
You have to set it up as two problems then combined like terms then add them together 

8 0
2 years ago
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