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2 years ago

If x2 = 30. what is the value of x?

Mathematics

1 answer:

kirza4 [7]2 years ago

4 0

Answer:

5.4772255750516 that's if it is x squared

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In a group of eighteen people, each person shakes hands once with each other person in the group. How many handshakes will occur

miv72 [106K]

The number of handshakes that will occur in a group of eighteen people if each person shakes hands once with each other person in the group is 153 handshakes

In order to determine the number of handshakes that will occur among 18 people, that is, the number of ways we can choose 2 persons from 18 people.

∴ The number of handshakes = $^{18}C_{2}$

$^{18}C_{2} = \frac{18!}{(18-2)!2!}$

$^{18}C_{2} = \frac{18!}{16!2!}$

$^{18}C_{2} = \frac{18\times17\times16!}{16!\times2!}$

$^{18}C_{2} = \frac{18\times17}{2\times1}$

$^{18}C_{2} = \frac{306}{2}$

$^{18}C_{2} = 153$

∴ The number of handshakes = 153 handshakes

Hence. 153 handshakes will occur in a group of eighteen people if each person shakes hands once with each other person in the group.

Learn more here: brainly.com/question/1991469

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Anastaziya [24]

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Step-by-step explanation:

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Look at the picture.

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The cost of attendance at State College is $19,500 for the first year. Devise a periodic savings plan that will allow you to mak

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2 years ago

If x2 = 30. what is the value of x? ​

If x2 = 30. what is the value of x?