1) you have to use PEMDAS.
2) 0.2^4+2.1•0.5^3 **solve exponents first**
.0016+2.1•0.125
.0016+0.2625=.2641
2) your answer is .2641
We want to solve
x² + 8x + 7 = 0
Factorize the left side.
x² + 8x + 7 = (x + 1)(x + 7)
Therefore
(x + 1)(x + 7) = 0
When (x + 1) = 0, obtain x = -1.
When (x + 7) = 0, obtain x = -7.
The solutions are x = -1 and x = -7
Answer: x = -7 and x = -1.
Answer:
The rope is 94.65 feet.
Step-by-step explanation:
Step-by-step explanation:
x+(3x+10)=90
4x+10=90
4x=80
x=20 Ans
Answer: 400
Step-by-step explanation:
I'm not sure 400