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3 years ago

10

Find the measures of "a” and "2a" in the figure,

1 answer:

Molodets [167]3 years ago

5 0

<h3>its a figure of hexagon</h3><h3>we know,</h3><h3> sum of hexagon: 720</h3><h3>now,</h3><h3> or, 97+a+165+143+2a: 720</h3><h3> or, 3a + 405: 720</h3><h3> or, 3a: 720 - 405</h3><h3> or, a : 315/3</h3><h3> or, a : 105</h3><h3>therefore, </h3><h3> a : 105</h3><h3> 2a : 2*105</h3><h3> : 210</h3>

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Mara simplifies the expression: -(7x - 3y) + 2(x + 4). Her work is shown. In what step does she make a mistake?

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<em><u>Correct steps are shown</u></em>

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<em><u>Solution:</u></em>

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$-(7x - 3y) + 2(x+4)$

<em><u>Correct steps are:</u></em>

From given,

$-(7x - 3y) + 2(x+4)$

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