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Stolb23 [73]
3 years ago
8

1.3(8-b)+3.7b= -5.2 solve and check answer

Mathematics
2 answers:
Paraphin [41]3 years ago
6 0

Answer:

b = -6.5

Step-by-step explanation:

I am 100% sure thts the right answer

Dafna1 [17]3 years ago
3 0

Answer:

b=-6.5 is your answer.

Step-by-step explanation:

What you have to do is get b by itself.

<em>1.3(8-b)+3.7b=-5.2</em>

<em>10.4-1.3b+3.7b=-5.2</em>

<em>2.4b+10.4=-5.2</em>

<em>2.4b=-15.6</em>

b=-6.5 is your answer.

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The ratio of two complementary angles is 5 to 1. what are the angles?
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Call x and y those angles. If they are complementary, then their sum equals 90°:

x + y = 90°

y = 90° - x

The ratio of them is 5 to 1. So,

x/y = 5/1

x/(90° - x) = 5/1

x = 5 * (90° - x)

x = 450° - 5x

x + 5x = 450°

6x = 450°

x = 450°/6

x = 75°

The measure of the other angle is

y = 90° - 75°

y = 15°

The angles are 75° and 15°.

I hope it helps. =)
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