HELP The perimeter of a rectangle is 150 inches the lengh is 3 inches longer than 5times the width find the length

Mathematics

1 answer:

Ilia_Sergeevich [38]2 years ago

8 0

12 inches

if the length = x,

P = 150 inches

=2 { ( 5x + 3 ) + x }

=10x + 6 + 2x

=12x + 6

Therefore 12x + 6 = 150

12x = 150 - 6

12x = 144

x = 12

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Answer:

128 ft sq.

Step-by-step explanation:

The way you find the area of a square is by multiplying one side by another, and since it is a square, the sides are the same. This means that if we have a square with a side length of x, the way to find the area of that square is to multiply x by x, which can be written as $x^2$ . Now, since we're doubling this, we can say that double Mary's garden is $2 * x^2$ . If we substitute 8 in for x, we have to multiply $8^2$ by 2 or 8 by 8 by 2 to find our answer. 8 times 8 is 64 and 64 times 2 is 128.