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Svetlanka [38]
4 years ago
9

∠ A and ∠ B are complementary. If m∠ B = 80°, what is the measure of ∠ A?

Mathematics
1 answer:
Stolb23 [73]4 years ago
6 0
Angle A would be 10 degrees.
Complementary angles add to 90 degrees.
So 90-80=10
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Answer:

R(x,y) = (0.8,-1.2)

Step-by-step explanation:

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The ratio is represented as:

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Required

Find the coordinates of R

The coordinates of R is calculated by:

R(x,y) = (\frac{mx_2 + nx_1}{m+n},\frac{my_2 + ny_1}{m+n})

Substitute values for m, n, x's and y's

R(x,y) = (\frac{2 * 5 + 3 * -2}{2+3},\frac{2*6 + 3*-6}{2+3})

R(x,y) = (\frac{4}{5},\frac{-6}{5})

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