Hello from MrBillDoesMath!
Answer:
Your friend is incorrect
Discussion:
| 3x + 8 | -9 = -5 => ( add 9 to both sides)
| 3x + 8 | -9 + 9 = -5 + 9 =>
| 3x + 8 | = 4 =>
3x +8 = 4 or 3x + 8 = -4 =>
x = -4/3 or x = -4
Thank you,
MrB
Answer: The last
Step-by-step explanation: 2 of the x values are the same
x=2.5
5x = 5(2.5) = 12.5
I believe 12.5 is the answer
7
Step-by-step explanation:
Put √49 in a calculator and it will give you 7.