64x^2-81 what’s the answer ?
2 answers:
Answer:
(8x+9)(8x-9)
Step-by-step explanation:
64x^2= 8x*8x
-81= 9*-9
Answer:
(8x-9)(8x+9)
Step-by-step explanation:
64x^2 - 81
Rewriting
(8x)^2 - 9^2
We recognize that this is the difference of squares
a^2 - b^2 = (a-b)(a+b)
(8x-9)(8x+9)
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So what even is this make it shorter and I should be able to answer it
E=9h+1.5(9)(h-40)
e=9h+13.5(h-40), since h=49
e=9(40)+13.5(9)
e=9(40+13.5)
e=9(53.5)
e=$481.50
He used an incorrect time ratio converting hours to minutes.
Answer:
b
Step-by-step explanation:
