3 years ago

1 What is the value of x in the figure? Use the degree symbol 72° 38° X °

Mathematics

1 answer:

NARA [144]3 years ago

5 0

Answer:

70°

Step-by-step explanation:

All triangles are 180°.

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Tell whether the angles are complementary or supplementary. Then find the value of x.

Paha777 [63]

The angles are complementary meaning they =90 degrees.

So take (x-20) and x, and write this equation,

x-20+x=90

2x-20=90

move the 20 over

2x-20=90
+20 +20

2x=110

x=55.

You can check it by plugging it back in,

(55-20)=35
and
x=55

35+55=90.

Thus, you know your answer is correct.

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3 years ago

Rook buys a shirt from the mall because he has a 25% off coupon. The shirt originally coats $55. Write two expressions to repres

ozzi

One expression: 0.75 x 55
another expression: (100% - 25%) x 55

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3 years ago

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mario62 [17]

Answer:

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