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kotykmax [81]
3 years ago
7

I need this done today whoever gets this correct gets brainliest!!! PLZZ HELPP MEE!!! hurryy!!

Mathematics
2 answers:
luda_lava [24]3 years ago
5 0
I’m pretty sure the answer is c I’m so sorry if I’m wrong
SOVA2 [1]3 years ago
4 0

Explanation is in the file

tinyurl.com/wpazsebu

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Becky is rolling a number cube with the number 1 through 6 what is the probability she will roll a 4 or 5
ryzh [129]
1/6 since there are 6 sides, therefore, there is a 1/6 chance that any number will be rolled
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Solve -6 - 4(-3) - 2 + 1 a.6 b.3 c.-3 d.-6​
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Answer 5

Step-by-step explanation:

-6+12-2+1

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3 equivalent of expressions using distributive 300x + 100y
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A levee was designed to protect against floods with an annual exceedance probability of 0.02. A larger flood would cause the lev
LuckyWell [14K]

Answer:

66.76% probability that the levee will NEVER fail in the next 20 years.

Step-by-step explanation:

For each year, there are only two possible outcomes. Either a levee fails during the year, or no levees fail. In each year, the probabilities of levees failing are independent from each other. So we use the binomial probability distribution to solve this problem.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

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.

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

And p is the probability of X happening.

In this problem we have that:

A levee was designed to protect against floods with an annual exceedance probability of 0.02. This means that p = 0.02

What is the risk that the levee will NEVER fail in the next 20 years?

This is P(X = 0) when n = 20. So

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

P(X = 0) = C_{20,0}*(0.02)^{0}*.(0.98)^{20} = 0.6676

66.76% probability that the levee will NEVER fail in the next 20 years.

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3 years ago
30 POINTS! PLEASE HURRY!!
Marta_Voda [28]

Answer:

oh man 30 points when its only half of thirty point oh man 30 points

Step-by-step explanation:

3 0
3 years ago
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