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Pani-rosa [81]
3 years ago
5

If y varies inversely as x and y=40 when x=5, then the constant is

Mathematics
1 answer:
mihalych1998 [28]3 years ago
6 0

The constant is 200.

Further explanation:

An inverse propertion states that if one quantity increases the other decreases and vice versa.

It can also be written as:

if y varies inversely with x

then

y∝1/x

y=k/x

When the proportionality symbol is removed, a proportionality constant is introduced

Given

y=40

x=5

Putting in equation

40=\frac{k}{5}\\k=40*5\\k=200

The constant is 200.

Keywords: Proportion, inverse proportion

Learn more about proportion at:

  • brainly.com/question/10364988
  • brainly.com/question/10435816\

#LearnwithBrainly

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Sarah is 6 years older than Amy.
Umnica [9.8K]

Answer:

B.

Step-by-step explanation:

The problem has got to be addition.

The sentence "Sarah is 6 years older than Amy." does not include any hint of subtracting, or multiplying.

A hint of multiplying in a expression would be the word 'times', like "Brandon is 6 times the age of Emily" which eliminates D.

A hint of subtraction in an expression would be the word 'less', like "Brandon is 6 less the age of Emily." which eliminates A and C.

The word 'older' indicates addition, or adding, and if it would have been subtraction, the keyword would be 'younger' because you are subtracting their age, like 19 - 11. The same goes with B, but adding.

Finally, we now know that it is B because there is no other addition choice.

I hope this helped. Please correct me if I am wrong.

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3 years ago
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stiv31 [10]

Answer:

This is false.

Step-by-step explanation:

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3 0
2 years ago
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Michael paid $10.11 for a pair of jeans. This amount included a tax of 2%. What was the cost before tax?
djverab [1.8K]

Answer: $9.91

Step-by-step explanation: The correct answer is $9.91 for the jeans. This is calculated by divided the total paid ($10.11) by 1.02, which represents the cost of the jeans + the 2% interest. 10.11 / 1.02 = $9.91.

You can then double check you work by calculating the 2% interest rate of the jeans. $9.91 x 2% = $ .20. The total is $9.91 for the jeans plus $ .20 for the tax, for a total of $10.11, which is the amount in the original problem.

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9. The sum of two consecutive integers is 41 less than<br> four times the larger. Find the numbers.
Maksim231197 [3]

Answer:

19 and 20

Step-by-step explanation:

Let x be the larger number

x - 1 + x = 4x - 41

We can combine like terms and isolate x:

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avanturin [10]

Answer:

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Step-by-step explanation:

x^2=500

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