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attashe74 [19]
3 years ago
15

Which of the following statements is true?

Mathematics
1 answer:
saveliy_v [14]3 years ago
3 0

Answer:

The answer is d.

Step-by-step explanation:

As we know, sin x= cos (90°-x)

sin 18° = cos (90°-18°)

= cos 72°.

Similarly, sin 72°= cos (90°-72°)

= cos 18°

But, sin 55°= cos (90°-55°)

= cos 35°

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Answer:

84 degrees.

Step-by-step explanation:

First, let's define what a complementary angle is. It's when two angles add up to 90 degrees. So we do 90-6=84 and 84+6 does in fact equal 90, so they are complementary.

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you have a large container of olive oil. You have used 22 1/2 quarts of oil. Twenty- five percent of the oil remain. How many qu
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7.5 quarts of olive oil remain.

Explanation:

Let

q = quarts of olive oil remain

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Multiply both sides by .25 to isolate q.

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<span>7.5=<span>q</span></span>

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Given the following statistics for women over the age of 50 entering our medical clinic: 1% actually have breast cancer 90% of t
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