math, algebra
posted by jasmine20 on .
this next one i want to make sure that what i'm answering is correct.
(1) A rectangle has sides of 3x4 and 7x+10. Find the expression that represents its perimeter.
My answer for solving:
P=2L+2W
P=2(3w4)+ 2(7x +10)
p=6w6+14x+10
My final answer:
P=20x+12
P=2L+2W
P=2(3w4)+ 2(7x +10)
the w should be x
p=6w6+14x+10
2*3x= 6x (you have 6w)
2*4 = 8 and not 6.
On the next term:
2*7x=14x as you have it BUT
2*10=20 and not 10
These may just be typos because the final equation you have is correct.
sorry they were typos. thank you.

5x=11