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NikAS [45]
2 years ago
10

A class of 30 swim team members took a life saving test 18 of the members had an average of 92 points the remaining members had

an average score of 84 points what was the average for the entire swim team
Mathematics
1 answer:
melamori03 [73]2 years ago
4 0

Answer:

88.8

Step-by-step explanation:

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Seven x's and 3y's cost as much as 4z's. One z costs as much as 1x plus 1y together. How many x's cost as much as 1y?
Pie

Answer:

Step-by-step explanation:

Equations

7x + 3y = 4z

<em>Second equation</em>

x + y = z                          Multiply the entire equation by 4

4[x + y = z]                      Now distribute the 4 through the equation

4x + 4y = 4z                    Both equations = 4z. Equate the lefts.

<em>Third equation   </em>

7x+3y = 4x + 4y              Subtract 3y from both sides

7x + 3y -3y = 4x + 4y -3y

7x = y + 4x                      Subtract 4x from both sides

7x - 4x = y + 4x - 4x       Combine

3x = y

Answer: 3x = y

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Please hurry; Toni's grandparents bought a house in 1975 for $28, 000. Every decade, the value of the house doubles. What will b
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Step-by-step explanation:

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I hope this helps! :)
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The Bailey family is traveling 565.5 miles for a family vacation. If they estimate they can travel 78 miles per hour how many ho
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