Answer:
width: 7 cm
length: 56 cm
Step-by-step explanation:
Let:
x=width
8x=length
P=2l+2w
126=2x + 2(8x)
126=2x+16x
18x=126
x=7
width: 7 cm
length: 56 cm
hope this helps!!
Answer:
3(2 + x)
Step-by-step explanation:
You have to multiply 3 by the sum of 2 and any number, or x. So if you put the expression of 2 + x in parenthesis, and 3 next to it. You'll get your answer.
Shes is wrong because 30% of 80 is 24