Answer:
x=3
Step-by-step explanation:
so...
13=x²+4.
start by subtracting 4 from each side to get the numbers on one side.
13-4=, and 4-4=0
now, we just have 9=x².
to undo a square, one must square root. so,
![\sqrt{9} = 3](https://tex.z-dn.net/?f=%20%5Csqrt%7B9%7D%20%20%3D%203)
and
![\sqrt{x {}^{2} } = x](https://tex.z-dn.net/?f=%20%5Csqrt%7Bx%20%7B%7D%5E%7B2%7D%20%7D%20%20%3D%20x)
now, x=3.
I would guess sometimes, but I'm not sure how something can be true and false at the same time. If something is both true and false it won't always be true and it won't never be true, so I'm guessing it's sometimes.
Answer:
24 in
Step-by-step explanation:
Perimeter is adding the length of all the sides together. So, 10 + 6 + 8 = 24
The answer is 31, because they made $128 total then you subtract $35 from expenses which equals to $93 and finally divide 93/3 = 31