hello!
so the answer that you put there is actually wrong and i'll tell you why and how to do it
so since you are adding the two:
-8x + 9x = x (so you got this part right)
-12 + 4 = -8 (this is where you got it wrong, -12 added 4 goes up in value to -8)
so the final answer is x - 8
i hope this helped and have a nice day!
Answer: 12/5 or 2 2/5
Step-by-step explanation: 7/2 - 11
/10
A = bh
b = 7 + 4 = 11
h = 8
11(8) = 88
The correct answer is B. 88 m^2
Answer:
in right angled triangle ABC
by using Pythagoras law
h²=p²+b²
x²=7²+10²
x=√149=12.21cm