Kevin ran 8 miles rounded to the nearest tenth
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
Answer:
−9s+60 is the answer
Step-by-step explanation:
If brainiest is earned its Greatly Appreciated
(-3s+20)(4-1) do whats in ( )'s
(-3s+20)3 distribute 3
-9s+60 is the answer
Answer:
The answer is D
Step-by-step explanation:
C 1009 because with the 80 hours she makes 640 dollars and comissin will be another 369
