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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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The perimeter of the isosceles ?ABC with the base BC is equal to 40 cm. Perimeter of the equilateral ?BCD is 45 cm. Find AB and
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<u>Step-by-step explanation:</u>

Perimeter of ΔBCD = BC + CD + BD. Since it is an isoceles triangle, then BC = CD = BD. So, Perimeter of ΔBCD = 3BC

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<u>÷3   </u>    <u>÷3 </u>

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Perimeter of ΔABC = AB + BC + AC.  Since it is an isosceles triangle with BC as the base, then AB = AC. So, Perimeter of ΔABC = 2AB + BC

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<u>          -15</u>  <u> -15 </u>

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<u>÷2         </u>   <u>÷2  </u>

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3 years ago
If a pint of cough syrup contains 473 ml of medication, how many full 13 ml doses are in the bottle?
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