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3 years ago

Help fast!!! Pls!!!!!

Mathematics

1 answer:

Nimfa-mama [501]3 years ago

6 0

Answer:

The height is 5 and the base is 9

Step-by-step explanation:

The area of a parallelogram is given by

A = bh

45 =x(x+4)

Distribute

45 =x^2+4x

Subtract 45 from each side

45-45 =x^2 +4x-45

0 = x^2 +4x-45

Factor

What two numbers multiply to -45 and add to 4

9+-5 = -45

9-5 =4

0=(x+9) (x-5)

Using the zero product property

0= x+9 0 = x-5

x=-9 x=5

Since length cannot be negative

x=5 is the solution

x=5

x+4 = 5+4 =9

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