2 years ago

PLEASE HELP ME I don’t get it

Mathematics

1 answer:

Temka [501]2 years ago

4 0

Split the figure into 3 shapes: a trapezoid,a rectangle and a triangle

Area of trapezoid

A= 1/2(b1+b2) h

A = 1/2(3 +9)(8)

A = 1/2(12)(8)

A = 48 square units

Area of rectangle:

A = L x W

A = 9 x 8

A = 72 square units

Area of triangle

A = 1/2bh

A = 1/2(3)(8)

A = 12 square units

Area of figure = 48 square units + 72 square units + 12 square units

= 132 square units

Answer

132 square units

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First of all, you would use the FOIL method for -5(a + 3). This means to just multiply -5 to all of the values in the parenthesis. This would equal:

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Here is a visual representation: https://puu.sh/zPxLC/a16740d0ce.png

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