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anygoal [31]
3 years ago
9

1. The 2010 census reported about 308.7 million people in the United States. The 2000 census reported a population of about 281.

4 million. By about what percent did the population change? Did the population grow or shrink?
Mathematics
1 answer:
solong [7]3 years ago
7 0
Let C be the percentage change. 
<span>C = 100*(308.7 million - 281.4 million)/(281.4 million) = 9.7%. This is positive, so the population grew. </span>
<span>- - - - - - - - - - - - - </span>
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Solve my question please, I’ll mark u as brainlest if the answer is correct and if you solved my question!!!
ikadub [295]

Answer:

x = price of balcony tickets = $7

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Step-by-step explanation:

Let

x = price of balcony tickets

y = price of orchestra tickets

y = 3x (1)

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Substitute y = 3x into (2)

148y + 76x = 3,640 (2)

148(3x) + 76x = 3,640

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x = 3,640/520

x = 7

Substitute x = 7 into (1)

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x = price of balcony tickets = $7

y = price of orchestra tickets = $21

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Find the angle of XYZ give your answer to 1 decimal place
miskamm [114]

Answer:

66.4°

Step-by-step explanation:

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\frac{sin(Z)}{XY}=\frac{sin(X)}{YZ}\\\\Substituting:\\\\\frac{sin(Z)}{6} =\frac{sin(90)}{15}   \\\\sin(Z)=\frac{sin(90)*6}{15}\\\\sin(Z)=0.4\\\\Z=sin^{-1}(0.4)\\\\Z=23.6^o

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90 + ∠Y + 23.6 = 180

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∠Y = 180 - 113.6

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