If m∠CBD = 40°, find m∠CAD. A) 30° B) 40° C) 50° D) 60° E) None of the above

Mathematics

1 answer:

aleksandrvk [35]3 years ago

7 0

The triangles cross the center of the circle CAD is the same as CBD.

The answer is B) 40 degrees.

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Part A:
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so
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Answer:

a. 1 1/8 b. 8/9

Step-by-step explanation:

You can set this up as a proportion to solve. For part a. we know that 2/3 of the road is 3/4 mile long. 2/3 + 1/3 = the whole road, so we need how many miles of the road is 1/3 its length. Set up the proportion like this:

$\frac{\frac{2}{3} }{\frac{3}{4} } =\frac{\frac{1}{3} }{x}$