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SSSSS [86.1K]
2 years ago
11

What is the measure of the vertex angle of an isosceles triangle if one of its base angles measures 42°?

Mathematics
1 answer:
blsea [12.9K]2 years ago
3 0

Answer:

96 degrees

Step-by-step explanation:

you have two angles that each measure 42 degrees, giving you 84 degrees combined

there are 180 degrees in a triangle, therefore the vertex angle is equal to 180 minus 84, or 96 degrees

check:

42 + 42 + 96 = 180

180 = 180

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Answer:

3

Explanation:

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Remove paranthesis: x + y - x - 3y = 9 - 15

Cancel the unknown variables: y - 3y = 9 - 15

Combine like terms: -2y=9 - 15

Calculate the sum or difference: -2y = -6

Reduce the greatest common factor on both sides of the equation: y =3

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Write the solution set of equations: {x = 6

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Calculate the sum or difference: 3

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2 years ago
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Answer:

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hope that helps

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