Answer is x = -7 and x = -3
<span> x2 + 10x = -21
</span><span> x2 + 10x + 21 = 0
</span>(x +3) (x +7) = 0
(x +3) = 0
and
(x + 7) = 0
so x = - 3 and x = -7
6xyz(3x+2y+z...................
Answer:

Step-by-step explanation:
In this problem we have a regular octagonal barrier (That means that all the length side are equal)
Find out the perimeter of the barrier
The perimeter is equal to

where
b is the length side of the barrier
we have

substitute in the formula of perimeter

Convert to mixed number

Answer:
I'm pretty sure the answer is a.
Answer:
96360
Step-by-step explanation:
search hours a month then multiply that by 12