B, because -3^2 is not -9. -3*-3 = 9, square roots of negative numbers aren't possible, because no number squared can be equal to them. Instead, they are expressed in terms of "i", which is defined as
i^2 = -1
4x + y = 5
3x + y = 8
y = -3x + 8
4x +(-3x + 8) = 5
4x -3x + 8 = 5
x + 8 = 5
x = -3
y = -3(-3) + 8
y = -9 + 8
y = -1
Can you send a picture of it? Then maybe I can help you answer it.
Expanded form is like this 300 plus 20 plus 7 plus .40 plus .6
Answer:20221.5
Step-by-step explanation:
