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3 years ago

Use the number line to add the fractions. help plz look at picture

Mathematics

1 answer:

mr_godi [17]3 years ago

5 0

Answer:

$\frac{1}{6}$

Step-by-step explanation:

$- \frac{1}{2} + \frac{2}{3} = - \frac{3}{6} + \frac{4}{6} \\\\ - \frac{3}{6} + \frac{4}{6} = \frac{1}{6}$

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lysha is at a local library with her best friend. they've noticed a lot of cute boys in the library, and alysha bets that of the

Annette [7]

Using the binomial distribution, there is a 0.1201 = 12.01% probability that Alysha will win the bet.

<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.

For this problem, the parameters are given as follows:

n = 20, p = 0.5.

She wins the bet if there are 12 boys, hence the probability is P(X = 12), found as follows:

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

$P(X = 12) = C_{20,12}.(0.5)^{12}.(0.5)^{8} = 0.1201$

0.1201 = 12.01% probability that Alysha will win the bet.

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

#SPJ1

7 0

1 year ago

Which of the following expressions are equivalent to -4 + (4+5)

noname [10]

Answer:

A, C, E

Step-by-step explanation:

-4 + (4+5) = 5

A: (4 - 4) + 5 = 5, equivalent

B: (-4 - 4) + 5 = -3, not equivalent

C: -(4-4) + 5 = 5, equivalent

D: -(4) + (-4) + 5 = -3, not equivalent

E: -4 + 4 +5 = 5, equivalent

7 0

3 years ago

A research center poll showed that % of people believe that it is morally wrong to not report all income on tax returns. What is

nataly862011 [7]

Question:

<em>A research center poll showed that 78% of people believe that it is morally wrong to not report all income on tax returns. What is the probability that someone does not have this belief? </em>

<em>The probability that someone does not believe that it is morally wrong to not report all income on tax returns is . (Type an integer or a decimal.)</em>

Answer:

$q = 0.22$