3 years ago

20 POINTS AND BRAINLIEST!

Mathematics

2 answers:

rusak2 [61]3 years ago

7 0

Answer:

Step-by-step explanation:

The overall angle in total is 90 degrees. The angles 'x+42' and '3x' equal ninety degrees, so we get the equation:

x + 42 + 3x = 90

4x + 42 = 90

4x = 48

x = 12

Hope that helps!

aksik [14]3 years ago

6 0

Answer:

x=12

Step-by-step explanation:

Since it is on a right angle we can equate the sum of these 2 angles to 90:

3x+x+42=90

Simplify:

4x+42=90

Subtract 42 from both sides:

4x+42-42=90-42

Simplify:

4x=48

Divide both sides by 4

4x÷4=48÷4

Simplify

x=12

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Answer:

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Step-by-step explanation:

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