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Ugo [173]
3 years ago
13

If f(x)=3x+7 and g(x)=x^2+4, find f(g(-5))

Mathematics
1 answer:
Charra [1.4K]3 years ago
3 0

Answer:

94

Step-by-step explanation:

Given f(g(-5)) means that you take the number, -5, and substitute it into g(x) first. The answer provided from that equation will then be the number to be substituted in f(x).

x^2 + 4

-5^2 + 4

25 + 4 [It's positive because -5 x -5 cancels out to make a positive]

29 = g(x), therefore, this is the new number to be substituted for f(x)

3x + 7

3 (29) + 7

87 + 7 [to get 87, multiply 3 by 29]

94

Therefore, your final answer is 94.

Hope this helps!

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Answer:

1.5m

Step-by-step explanation:

Let the length of the pathway across all its side be x. This means we are adding a length of 2x to both the length and breadth to 12+2x and 16+2x respectively.

The new area thus becomes:

(12+2x)(16+2x) = 285

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alexandr1967 [171]

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5 0
3 years ago
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Akimi4 [234]

Answer:

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Step-by-step explanation:

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3 years ago
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babymother [125]

Answer:

85

Step-by-step explanation:

hello :

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Answer:

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Step-by-step explanation:

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2 years ago
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