Answer:
9
Step-by-step explanation:
put g(x) in for x everywhere in f(x)
f(x) = 2x
f(g(x)) = 2g(x)
f(g(x) = 2(log(x))
Choice A
Step-by-step explanation:
factor 4 out of the variable terms, as this helps.
but my approach is simply to define the target and then calculate "backwards".
we want to find
(ax + b)² = a²x² + 2abx + b²
and now we compare with the original equation :
a²x² = 4x²
a² = 4
a = 2
2abx = 16x
2×2×bx = 16x
4b = 16
b = 4
b² = 16, but we have only 3, so we need to subtract 16-3 = 13 from the completed square.
so, our equation is
(2x + 4)² - 13 = 0
(2x + 4)² = 13
2x + 4 = sqrt(13)
2x = sqrt(13) - 4
x = sqrt(13)/2 - 2
15 ft = 180 inches
180/18 = 10
Therefore, each part is 10 inches long.
10,000,000 + 1,000,000 + 400,000 + 30,000 thats all because the rest is all 0's
