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2 years ago

5

Central school students sold gift wrap to raise money for the school.Nick sold 10 rolls for $4 each and $9 rolls at $6.How much

money did nick collect?

1 answer:

Anna11 [10]2 years ago

4 0

Answer:

amount of money collected by Nick is = $40

Step-by-step explanation:

Nick sold 10 rolls for $4 each,

Hence total amount of money collected by Nick is = 10 x 4 = $40

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Answer:

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Step-by-step explanation:

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2 years ago

Explain when the median of a data set is a better measure of center than the mean.

shusha [124]

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3 years ago

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The formula I = PRT where I = Interest, P = Principal, R = Rate, and T = rime use to calculate the amount of simple interest ear

monitta

$\bf ~~~~~~ \textit{Simple Interest Earned}
\\\\
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2 years ago

What is sqrt(7)/sqrt(11) in simplest radical form?

Nady [450]

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2 years ago

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It takes three identical water pumps 8 hours to fill a pool, What is the constant of variation?

BaLLatris [955]

Answer:

Constant of variation is 24.

Step-by-step explanation:

Inverse variation states that a relationship between two variables in which the product is remain constant.

If one variable increases then, the other one decreases in proportion so that the product is unchanged,

if y is inversely proportional to x i.e $y \propto\frac{1}{x}$ or

$y =\frac{k}{x}$ ;where k is the constant of variation.

It is given that 3 identical water pumps takes 8 hours to fill a pool,

since, it will take less time with more pumps, so it is an inverse variation.

By definition of inverse variation;

$time = \frac{k}{pump}$

Substitute the values to solve for k;

$8 = \frac{k}{3}$

Multiply by 3 to both sides we get;

$8 \times 3 = \frac{k}{3} \times 3$

Simplify:

k = 24

Therefore, the constant of variation is, 24

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2 years ago