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4 years ago

6

A math test is worth 100 points and has 30 problems. Each problem is worth either three points or four points. How many four Pro

blems are there?

1 answer:

kvv77 [185]4 years ago

7 0

If all were 3-point problems, the test would be worth 90. In order to add 10 points to the value, 10 4-point problems are needed.

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If y varies directly with x and y is 18 when x is 6, what is the constant of variation?

In-s [12.5K]

Answer:

k = 3

Step-by-step explanation:

Given y varies directly with x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = 18 when x = 6 , then

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3 years ago

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Answer:

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Then tie it up into an equation:

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4 years ago

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pochemuha

Answer: -96r + 13

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3 years ago

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