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yan [13]
3 years ago
12

The variable y varies directly as x. when x=20, y=12. what is the value of y when x=15?​

Mathematics
1 answer:
SpyIntel [72]3 years ago
6 0

Answer: its 21

Step-by-step explanation:

just did it

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Find the student’s error in solving the following inequality.
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Answer:

The correct option is:

The student should have switched the direction of the inequality sign to get –5> x for a final answer

Step-by-step explanation:

The students has made a mistake in the 3rd step.

We know that when we multiply or divide any negative number on both sides of the inequality, the sign of inequality  reverse its direction.

In step 3 the student divided 25 by -5 but did not  switch direction of the inequality sign.

Therefore the correct option is: The student should have switched the direction of the inequality sign to get –5> x for a final answer

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3 years ago
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The following wedge prism has a volume of
tiny-mole [99]

Answer:

The volume of the prism is 27 cubic inches.

Step-by-step explanation:

In order to calculate the volume of the given prism, we need to apply the correct formula. The volume of the wedge prism is given by the following formula:

Volume = \frac{1}{2}*b*h*l

Applying the data from the problem on the equation above, we have:

Volume = \frac{1}{2}*6*4.5*2\\Volume = 6*4.5\\Volume = 27

The volume of the prism is 27 cubic inches.

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podryga [215]

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Step-by-step explanation:

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There are four consecutive integers. The sum of the first and third number is 140. what are the integers? please show work:)
marta [7]
69, 70, 71, and 72
69 and 71 are the first and third digits. 69+71=140
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