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1 year ago

Find the value of n in this equation.

Mathematics

1 answer:

lisabon 2012 [21]1 year ago

3 0

Answer:

D. 9

=========================

<h2>Given </h2>

Triangle with:

Base of n² -3,
Midsegment of 39.

The value of n.

<h2>Solution</h2>

As per definition of midsegment, it is connecting the midpoints of two sides and its length is half the length of the opposite side of the triangle.

So we have:

(n² - 3)/2 = 39

Solve it for n:

n² - 3 = 78
n² = 81
n = √81
n = 9

Correct choice is D.

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Step-by-step explanation:

Since we have given that

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Total number of people in group 1 is given by

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Relative frequency of people of A in Group 1 is given by

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Similarly, Number of people of A in group 2 = 20

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Total number of people in group 2 is given by

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Relative frequency of people of A in Group 2 is given by

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