3 years ago

Which statements are always true? Check all that apply.

Mathematics

2 answers:

Ann [662]3 years ago

8 0

Answer:

A rectangle has four right angles, A triangle has 3 sides, A square has 4 equal sides

Step-by-step explanation:

mamaluj [8]3 years ago

4 0

A rectangle has four right angles, A triangle has 3 sides, A square has 4 equal sides

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3 years ago

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M 2 = 2x°, m 3 = 5x°, m 1 =<br><br> 2x + 5x<br> 5x - 2x<br> 180 - 5x<br> 180 - 7x

MaRussiya [10]

We know: the sum of measures of triangle angles is 180°.

Therefore we have the equation

$m\angle1+m\angle2+m\angle3=180^o\to m\angle1=180^o-m\angle2-m\angle3$

Substitute $m\angle2=2x,\ m\angle3=5x$ :

$m\angle1=180-2x-5x=180-7x$

<h3>Answer: 180 - 7x</h3>

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3 years ago

Which equation has the same solution

Temka [501]

4x^2+48x=20
4x^2+48x+144=164
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-

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