3 years ago

Could someone explain how they got this answer this is annoying me

Mathematics

1 answer:

kherson [118]3 years ago

4 0

$43

calculate $\frac{3}{4}$ of his earnings by multiplying $172 by 3 and dividing the result by 4

spent = (3 × $172 ) ÷ 4 = $129

now subtract this from earnings to calculate deposit

deposit = $172 - $129 = $43

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Answer:

$Side_2 = 17\ cm$

Step-by-step explanation:

Given

Shape: Trapezoid

$Area = 243cm^2$

$Height = 18cm$

$Side_1 = 10cm$

Required

Determine the length of the second parallel side

The area of a trapezoid is:

$Area = \frac{1}{2}(Side_1 + Side_2) * Height$

Substitute values for Area, Height and Side1

$243 = \frac{1}{2}(10 + Side_2) * 18$

Multiply both sides by 2

$2 * 243 = 2 * \frac{1}{2}(10 + Side_2) * 18$

$486 = (10 + Side_2) * 18$

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Hence;

<em>The length of the second parallel side is 17cm</em>

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C is the correct answer

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