Answer:
14
Step-by-step explanation:
The perimeter is the sum of the sides, so we have
2x+x+15+4x-7=57
= 7x+8
Subtracting 8 from both sides, we get
7x= 49
Dividing 7 from both sides, we get
x=7
Our sides are then 2x=14, x+15=22, and 4x-7=21. 14 is our answer
Answer:
d
Step-by-step explanation:
3x+4y=12
4x-4y=20
7x=32
x=32/7
2y=64/7 - 10
Answer:
I hope this helps you
x+6>=0
x>= -6
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