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Ulleksa [173]
3 years ago
10

Need urgent help in mathematics!! Will mark brainliest!!!!

Mathematics
2 answers:
Sonbull [250]3 years ago
7 0

Hello!

7P5 is read as "is read "the number of permutations of 7 different things taken 5 at a time".

This means that each arrangement represents a different arrangement of 5 things out of a group of 7 things.

To show this, it would be written as: nPr = \frac{n!}{(n-r)!}. In this case, n is equal to 7 and r is equal to 5.

7P5 = \frac{7!}{(7-5)!} (simplify the parentheses and simplify the factorial)

7P5 = \frac{7 * 6 * 5 * 4 * 3 * 2 * 1}{2 * 1} (simplify the fraction)

7P5 = 2520

Therefore, the answer is the third choice, 2520.

Nataly [62]3 years ago
3 0

₇P₅ is a permutation. you can find this setting in the statistics menu of your scientific calculator (i think).

If you don't have a scientific calculator, you can use the following formula:

nPr = \frac{n!}{(n - r)!}

₇P₅  = \frac{7!}{(7 - 5)!}

     = \frac{7}{2!}

     = \frac{7 * 6 * 5 * 4 * 3 * 2!}{2!}

     = 7 * 6 * 5 * 4 * 3

    = 2520

Answer: C

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The value of x will be equal to x = 79.

<h3>What is the triangle?</h3>

Triangle is a shape made of three sides in a two-dimensional plane. the sum of the three angles is 180 degrees.

For an isosceles triangle, the value of two opposite angles is equal and the opposite sides are also equal.

The Sum of the three angles is equal to 180 degrees so the third angle will be calculated as:-

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