Answer is 12
Reason
Combine like terms
3x + 99 x = 1224
102x = 1224
Now solve for x
Divide both sides by 102
x= 12
Answer: x
=
9
Step-by-step explanation: your welcome
Step-by-step explanation:
lets take a look....
In order to find the perimeter of a triangle you have to get the sum of all sides. In other words,
Blue triangle:
Red triangle:
Difference:
4 squared+ 12 squared= c squared
16+144=160
Square root 160
so your answer would be 12.6
If X = 23, the. 23 - 6 = 17.