2 years ago

How many acute angles does a triangle have?

Mathematics

1 answer:

OleMash [197]2 years ago

8 0

Two angles, each 90 degrees

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ASHA 777 [7]

Answer:

Step-by-step explanation:

<C+<D = 180 since they form a straight line

5x+20 +3x = 180

8x+20 = 180

Subtract 20 from each side

8x+20-20 = 180-20

8x = 160

Divide by 8

8x/8 = 160/8

x = 20

We want to find angle D

<D = 3x= 3*20 = 60

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2 years ago

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melamori03 [73]

Answer:

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Step-by-step explanation:

Normally when I multiply mixed numbers, I change them to improper fractions first so that it is easier.

1 $\frac{2}{10}$ × 5 = $\frac{12}{10}$ × 5

Multiply 5 by the numerator of the fraction and leave the denominator alone.

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Change back to simplest form.

$\frac{60}{10}$ = 6

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