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3 years ago

Fred has a bag containing 12 black marbles, 10 red marbles, and 15 white marbles .

Mathematics

1 answer:

-Dominant- [34]3 years ago

7 0

Answer:

I dont understand your question but I'm going to assume that you want to add those numbers the answer would be 37 marbles in total

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On each of three consecutive days the National Weather Service announces that there is a 50-50 chance of rain. Assuming that the

kvasek [131]

Answer:

1. 50%

Step-by-step explanation:

For each day, there are only two possible outcomes. Either it does rain, or it does not, 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 combinatios 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:

$n = 3, p = 0.5$

We want to find

NNN + RNN + NRN + NNR

This is

$P(X \leq 1) = P(X = 0) + P(X = 1)$

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

$P(X = 0) = C_{3,0}.(0.5)^{0}.(0.5)^{3} = 0.125$

$P(X = 1) = C_{3,1}.(0.5)^{1}.(0.5)^{2} = 0.375/tex][tex]P(X \leq 1) = P(X = 0) + P(X = 1) = 0.125 + 0.375 = 0.5$

The correct answer is:

1. 50%

3 0

3 years ago

A person earns $16,000 one year and gets a 5% raise in salary

notka56 [123]

Answer:

$16800

Step-by-step explanation:

16000 * 1.05 = 16800

3 0

3 years ago

Read 2 more answers

Round off 4095 nearest hundreds

ivolga24 [154]

Answer:

4100

Step-by-step explanation:

Rounding means making a number simpler but keeping its value close to what it was. Visual image below of showing different places to round. Given to make rounding's more clear and easier for you.