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3 years ago

C. 25 D. 6 Geometry math question please help me

Mathematics

1 answer:

Sophie [7]3 years ago

3 0

Hello!

According to the dashes, you can see that the two separate triangles are congruent. Therefore, these two angles are congruent. We will solve below.

6n-10=50

We add 10 to both sides.

6n=60

Divide both sides by 6.

n=10

Therefore, our answer is A) 10.

I hope this helps!

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3 years ago

Please give full explanation

Alex

S (ABCD) = S (ABC) + S (ADC)

_____________________________________________

<h2>Reminder :</h2>

Area of the triangle = ½ × base × height

_____________________________________________

Thus :

$S (ABCD) = ( \frac{1}{2} \times 10 \times 3) + ( \frac{1}{2} \times 10 \times 5) \\$

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$S (ABCD) = 40 \: \: {cm}^{2}$

There you go...

Have a great day ❤

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