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2 years ago

Find the circumstances of a circle if the area is 300 square centimeter

Mathematics

2 answers:

Alik [6]2 years ago

8 0

The circumferene is 61.4

sergiy2304 [10]2 years ago

6 0

It will be 61 rounded.

Here the link I used

https://www.piday.org/calculators/circle-calc-find-c-d-a-r/#

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ABCD is a parallelogram the ratio of angle A and Angle B of this Parallelogram is 5 ratio 4 find the measure of Angle B.

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How many students did Rebecca observe when she collected her data?

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2 years ago

Eric's class consists of 12 males and 16 females. If 3 students are selected at random, find the probability that they

Reptile [31]

Answer:

The probability that all are male of choosing '3' students

P(E) = 0.067 = 6.71%

Step-by-step explanation:

Let 'M' be the event of selecting males n(M) = 12

Number of ways of choosing 3 students From all males and females

$n(M) = 28C_{3} = \frac{28!}{(28-3)!3!} =\frac{28 X 27 X 26}{3 X 2 X 1 } = 3,276$

Number of ways of choosing 3 students From all males

$n(M) = 12C_{3} = \frac{12!}{(12-3)!3!} =\frac{12 X 11 X 10}{3 X 2 X 1 } =220$

The probability that all are male of choosing '3' students

$P(E) = \frac{n(M)}{n(S)} = \frac{12 C_{3} }{28 C_{3} }$

$P(E) = \frac{12 C_{3} }{28 C_{3} } = \frac{220}{3276}$

P(E) = 0.067 = 6.71%

<u><em>Final answer</em></u>:-

The probability that all are male of choosing '3' students

P(E) = 0.067 = 6.71%

3 0

3 years ago