Answer:
a = -9
Step-by-step explanation:
a+(-4)=-13
add 4 to each side
a-4+4 = -13+4
a = -9
The weight of each one of the five little girls if taken separately is 242.4 lb.
<h3>
Weight of each girl when taken separately</h3>
The weight of each girl can be determined from the average weight of the girls.
Weight of each girl = (Total weight) / number of girls
W = (129 + 125 + 124 + 123 + 122 + 121 + 120 + 118 + 116 + 114)/5
W = 1,212/5
W = 242.4 lb
Thus, the weight of each one of the five little girls if taken separately is 242.4.
Learn more about weight here: brainly.com/question/2337612
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Answer:
6.7
Step-by-step explanation:
let n = the number
3n + 9 = 29
3n = 20
n = 20/3 or 6.67
Substitute g(x) where x is in the definition of f(x).
f(g(x)) = -3(g(x))^2 - 1
f(g(x)) = -3(-5x)^2 - 1
= -3(25x^2) - 1
f(g(x)) = -75x^2 - 1
