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3 years ago

Find the area of the shaded region

Mathematics

1 answer:

kodGreya [7K]3 years ago

7 0

Answer: 21.994 cm²

Step-by-step explanation:

Area of the shaded region = Area of the bigger circle - the areas of the two smaller circles.

Formula for finding area of a circle = πr² where π is a constants . It has value of 22/7 or 3.142

Now area of the bigger circle = 3.142 x 3²

= 3.142 x 9

= 28.278 cm² Now are of the two smaller triangle = 3.142 x 1² x 2

= 6.284 cm².

Therefore are of the shaded region = 28.278 - 6.284

= 21.994 cm²

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antiseptic1488 [7]

Answer:

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Step-by-step explanation:

For each race, there are only two possible outcomes. Either the person has a crash, or the person does not. The probability of having a crash during a race is independent of whether there was a crash in any other race. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

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$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

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This is:

$P(X \geq 1) = 1 - P(X = 0)$

When $n = 30$

We have that:

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0.7061 = 70.61% probability she will have her first crash within the first 30 races she runs this season

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2 years ago

Number 5 has me going crazy, plz help

Ber [7]

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