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Zarrin [17]
3 years ago
13

in equivalent ratios,if the numerator of the first ratio is greater than the denominator of first ratio, is the numerator of the

second ratio greater than denominator?
Mathematics
1 answer:
fiasKO [112]3 years ago
3 0

Yes. The ratios should both have the numerator greater than the denominator.

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Guys I really need help geometry hw 21 and 22
mario62 [17]

These can be a bit of a mind-twister. A fairly straightforward approach is to define a variable (x) to be the angle, then use 90-x for the complement and 180-x for the supplement. Write the relations given in the text, solve for x, then calculate the measure of the angle asked for by the problem statement.

You don't have to do it that way. In 21, you can work directly with "the complement of the angle." You know that an angle and its complement make 90°, and that an angle and its supplement make 180°. This means the supplement is 90° more than the complement—a fact you can use here.

<h2>21.</h2><h3>Given</h3>

The supplement of an angle is 4 times the complement of the angle.

<h3>Find</h3>

The complement of the angle.

<h3>Solution</h3>

Let x represent the complement of the angle (what the question asks for). Then the supplement of the angle is x+90.

The supplement is 4 × the complement

... x + 90 = 4x

... 90 = 3x . . . . . . . subtract x

... 30 = x

The complement of the angle is 30°.

_____

<u>Check</u>

The angle is 60°; its complement is 30°, and its supplement is 120°. 120° is 4 times 30°, as required.

<h2>22.</h2><h3>Given</h3>

5 times the complement of an angle less 2 times the supplement is 40°

<h3>Find</h3>

the supplement of the angle

<h3>Solution</h3>

We can do this as we did in the previous problem. We are asked to find the supplement of the angle. Let x represent the supplement of the angle. As discussed above, then the complement of the angle is x-90°.

... 5 × (the complement) - 2 × (the supplement) = 40

... 5(x-90) -2x = 40 . . . . . . . . . filling in the variable expressions for complement and supplement

... 5x -450 -2x = 40 . . . . . . . . eliminate parentheses

... 3x = 490 . . . . . . . . . . . . . . . collect terms, add 450

... x = 163 1/3

The supplement of the angle is 163 1/3°.

_____

<u>Check</u>

The angle is 16 2/3°. Its complement is 73 1/3°.

5 times the complement is 366 2/3°. 2 times the supplement is 326 2/3°. The latter subtracted from the former is 366 2/3 - 326 2/3 = 40, as required.

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3 years ago
There are 60 flowers in a bouquet, 24 of which are yellow. What percent of the flowers are yellow?
Kobotan [32]

Answer:

40%

Step-by-step explanation:

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1/8 represented in different ways
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2/16, 3/24, 4/32 is that what your asking?
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A large pizza with four toppings costs $20. What is the ratio of cost to toppings?
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the ratio is 5 to 1.

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