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lana [24]
3 years ago
14

Urgent help please

Mathematics
1 answer:
andrew-mc [135]3 years ago
6 0

Mean is the arithmatic average of a given data set. So,

Mean= \frac{Sum of the data}{Number of the data}

There are seven data in the data set.

According to the given problem,

\frac{18+p+13+q+15+r+7 }{7} =11

\frac{53+p+q+r }{7} =11 Combine the like terms of the numerator.

\frac{53+p+q+r }{7}*7 =11 *7 Multiplying 7 to each sides of equation.

53 + p + q + r = 77

53 + p + q + r - 53 = 77 - 53 Subtract 53 from each sides.

p + q + r = 24

Next step is to divide each sides by 3 so that we can write this in form of mean of p, q and r. Therefore,

\frac{p + q + r}{3} =\frac{24}{3}

So, mean of p, q and r = 8.

I hope this helps you!.

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<h3>What is a expression? What is a mathematical equation? What is unit conversion?</h3>

A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem. Conversion of units is the conversion between different units of measurement for the same quantity, typically through multiplicative conversion factors.

We have a soccer field that is 105 meters long and a football field is 120 yards long.

In one yard, we have -

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Then, in 120 yards, we will have -

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To solve more questions on dimensions and unit conversion, visit the link below -

brainly.com/question/4613077

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