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Ludmilka [50]
3 years ago
9

Please help me solve this (ASAP)

Mathematics
2 answers:
joja [24]3 years ago
7 0
Since complementary angles add to 90°, (4x - 1) and (5x + 19), also add to 90°.

Thus, lets form an equation:

90 = 5x + 19 + 4x - 1
72 = 9x
x = 9

Thus, the measure of angle B is 64°.
IrinaVladis [17]3 years ago
5 0
90=5x+19+4x-1
72=9x
X=9
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