The width of a rectangle is 5n−2.5 feet and the length is 2.5n+6 feet. Find the perimeter of the rectangle.

5.0n+7.0

Step-by-step explanation:

Perimeter of a rectangle = 2(L+W)

L is the length = 5n-2.5

W is the width = 2.5n+6

Perimeter of the rectangle = 2(5n-2.5+2.5n+6)

Perimeter of the rectangle = 2(2.5n+3.5)

Perimeter of the rectangle = 5.0n+7.0

Hence the perimeter of the rectangle is 5.0n+7.0

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

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