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aliina [53]
3 years ago
12

Angle 1 and 2 are complimentary.

Mathematics
2 answers:
AleksAgata [21]3 years ago
7 0

Answer:

A. 15

Step-by-step explanation:

Complementary angles add to 90 degrees

<1 +<2 = 90

x+ 3x+30 = 90

Combine like terms

4x +30 = 90

Subtract 30 from each side

4x+30-30 = 90-30

4x= 60

Divide by 4

4x/4= 60/4

x = 15

frutty [35]3 years ago
4 0

Answer:

x = 15

Step-by-step explanation:

<u>If angles are complimentary, they add up to 90 degrees</u>

<u />

<u>Step 1:  Make an equation</u>

<em>x + (3x + 30) = 90</em>

<em />

<u>Step 2:  Solve for x</u>

x + (3x + 30) = 90

x + 3x + 30 = 90

4x + 30 - 30 = 90 - 30

4x / 4 = 60 / 4

<em>x = 15</em>

<em />

Answer:  x = 15

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