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IrinaK [193]
2 years ago
6

Find m ABC (2x+14) (x+7) ​

Mathematics
2 answers:
Orlov [11]2 years ago
6 0

Answer:

Last option 30°

damm sure about it

Step-by-step explanation:

value of x is 23 but value of Angle ABC will be x +7 i.e. 30

marin [14]2 years ago
6 0

Answer:

30

Step-by-step explanation:

∠ABC + ∠CBD = 90°

x + 7 + 2x + 14 = 90°

<u>x + 2x</u>   <u>+ 7 + 14</u> = 90

3x + 21 = 90

Subtract 21 from both sides

3x = 90 - 21

3x = 69

Divide both sides by 3

x = 69/3

x = 23

∠ABC = x + 7

         = 23 + 7

         = 30

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Suppose that the populations of the United States and China both increase by 12 million people in one year. What would be the re
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Question:

Suppose that the populations of the United States and China both increase by 12 million people in one year. What would be the relative change for each country? Answer to the nearest tenth of a percent (1 decimal place). Make sure that you fill in each answer area before checking "How Did I Do?".

If you assume that the U.S. population is about 300 million, an increase of 12 million would result in a relative change of Number %.

If you assume that China has about 1 billion people, an increase of 12 million would result in a relative change of Number %.

Answer:

The relative change of the United States and China is 4% and 1.2%, respectively.

Step-by-step explanation:

Given

Represent population with p. So, we have:

United States

\triangle p = 12\ million

p_1 =300\ million

China

\triangle p = 12\ million

p_1 =1\ billion

Required

Determine the relative change for each country

Relative change, C is calculated as:

C = \frac{\triangle p}{p} * 100\%

For United States

C = \frac{12\ million}{300\ million} * 100\%

C = \frac{12}{300} * 100\%

C = \frac{12 * 100}{300}\%

C = \frac{1200}{300}\%

C = 4\%

For China

C = \frac{12\ million}{1\ billion} * 100\%

C = \frac{12}{1000} * 100\%

C = \frac{12* 100}{1000} \%

C = \frac{1200}{1000} \%

C = 1.2\%

The relative change of the United States and China is 4% and 1.2%, respectively.

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2 years ago
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