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2 years ago

PLEASE HELP!!!! PLEASE! EASY!! BRAINLIEST RIGHT AWAY IF YOU EXPLAIN!!!

Mathematics

2 answers:

White raven [17]2 years ago

3 0

Answer:

First picture: 60

Second picture:

Step-by-step explanation:

The first step for the first picture is to find the area of the triangle on top. In order to do that, we have to use the equation: (W*L*1/2)

(3*4*1/2)=6

Then, we multiply the above equation by the Height. Which makes the equation become 60.

The first step for the second picture is the same. We first find the area of the triangle on top.

(12*9*1/2)=54

Then we multiply the height by our above answer.

(54*20)=1,080

The other measurements that were there aren't needed. So, next time, completely ignore them!

Hope you have a good day/night! Good luck!

alina1380 [7]2 years ago

3 0

THE FIRST IS 135
THE SECOND TRIANGLE IS 20

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Using the binomial distribution, it is found that there is a 0.7447 = 74.47% probability that fewer than 7 of them show up.

<h3>What is the binomial distribution formula?</h3>

The formula is:

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

$C_{n,x} = \frac{n!}{x!(n-x)!}$

The parameters are:

x is the number of successes.

n is the number of trials.

p is the probability of a success on a single trial.

In this problem, the values of the parameters are given as follows:

p = 0.7, n = 8.

The probability that fewer than 7 of them show up is given by:

[tec]P(X < 7) = 1 - P(X \geq 7)[/tex]

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$P(X \geq 7) = P(X = 7) + P(X = 8)$

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

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$P(X = 8) = C_{8,8}.(0.7)^{8}.(0.3)^{0} = 0.0576$

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[tec]P(X < 7) = 1 - P(X \geq 7) = 1 - 0.2553 = 0.7447[/tex]

0.7447 = 74.47% probability that fewer than 7 of them show up.

More can be learned about the binomial distribution at brainly.com/question/24863377

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