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timofeeve [1]
3 years ago
9

A zoo in oklahoma charged $22 for adults and $15 for children. During a summer day, 732 zoo tickets were sold, and the total rec

eipts were $12,912. How many child and how many adult tickets were sold?
Mathematics
1 answer:
Vlad [161]3 years ago
6 0

Answer: Cost of tickets for adults = $22

Cost of tickets for children = $15

Total number of tickets sold = 732

Total receipts = $12,912

Let x be number of adult ticket's sold and y be the number of child ticket's sold.

Therefore, we have:

x+y=732       --------------- equation 1

x=732-y

Also, we have:

22 x+15y=12,912

Now, let's substitute the value of x:

22 (732-y)+15y=12912

16104-22y+15y=12912

16104-7y=12912

7y=16104-12912

7y=3192

y=\frac{3192}{7} =456

Now, let's substitute the value of y=456 in equation 1, we have:

x+456=732

x=732-456

x=276

Therefore, the number of child ticket's sold is 456 and number of adult ticket's sold is 276

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The average estimated hours a person in the United States spent playing video games per year from 2002 to 2012 were 71, 80, 82,
ozzi

Answer:

Population variance 579

Population standard deviation 24

Step-by-step explanation:

The average estimated hours a person in the United States spent playing video games per year from 2002 to 2012 were 71, 80, 82, 78, 80, 91, 107, 121, 125, 131, and 142.

The population variance is given by:

\sigma^2=\frac{\sum(x-\mu)^2}{n}

\mu=\frac{71+80+82+78+80+91+107+121+125+131+142}{11}

\mu=\frac{1108}{11}

This implies that:

\sigma^2=\frac{(71-\frac{1108}{11})^2+(80-\frac{1108}{11})^2+(82-\frac{1108}{11})^2+(78-\frac{1108}{11})^2+(80-\frac{1108}{11})^2+...+(142-\frac{1108}{11})^2}{11}

\sigma^2=\frac{70006}{121} =579 to the nearest whole number

The population standard deviation is

\sigma=\frac{\sqrt{70006} }{11}=24 to the nearest whole number.

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3 years ago
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Sarah went to a local pharmacy to pick up medicine for her sick mother. She bought two things. Each item costed 40 dollars. How
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A carton of orange juice is 9 centimeters long and 24 centimeters tall. If I drink one-third of the fruit juice, what is the vol
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Step-by-step explanation:

Given that,

The length of a carton, h = 9 cm

Width, b = 13 cm

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I drink one-third of the fruit juice, then two third will be left. So, the volume is :

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3 years ago
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