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goblinko [34]
3 years ago
8

Determine the average of the following test scores: 97,99,87,89

Mathematics
1 answer:
IRISSAK [1]3 years ago
6 0
All you have to do is add up all the numbers and divide by the amount of numbers there are so in this case 4
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Answer:

Step-by-step explanation:

To create a system of inequalities, write an inequality to model each condition that must be satisfied in the given situation.

It is given that x represents the area of the base of the barrel in square feet and y represents the volume of the pump in cubic feet.

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x(x-4) - y ≤ 90

To find the cost of the supplies for the barrel, find the surface area by multiplying the perimeter of the base by the height of the barrel and then adding the area of the base. Since there is no top, the area of the base only needs to be added once. Then, multiply the cost per square foot by the surface area.

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8(x(x-4)+x) + 50y ≤ 1,100

Combining both of the inequalities gives the following system of inequalities.

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