Angle a and angle b are complimentary angles.
angle a measures 5x - 10, and angle b measures 3x + 20.
find the measure of angle b.
measure of angle a =
degrees.
measure of angle n =
a
degrees.

Step-by-step explanation:

Complementary Angles sum up to 90°, so set the two expressions equal to 90°:

90° = [3x + 20]° + [5x - 10]°

90° = [10 + 8x]°

-10° - 10°

___________

80° = [8x]°

__ __

8° 8°

[Plug this back into both expressions to get m∠B at 50° and the m∠A at 40°.]

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if x = 1, then the answer is 3.5

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d