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3 years ago

Use long division to write the fraction 2/9 as a decimal

Mathematics

1 answer:

snow_tiger [21]3 years ago

8 0

Answer:

.2 repeating

The drawing will help

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Find the missing probability. P(B)=720,P(A|B)=14 ,P(A∩B)=?

Ivan

Answer:

7/80

Step-by-step explanation:

Given that: P(B) = 7 / 20, P(A|B)= 1 / 4

Bayes theorem is used to mathematically represent the conditional probability of an event A given B. According to Bayes theorem:

$P(A|B)=\frac{P(A \cap B)}{P(B)}$

Where P(B) is the probability of event B occurring, P(A ∩ B) is the probability of event A and event B occurring and P(A|B) is the probability of event A occurring given event B.

$P(A|B)=\frac{P(A \cap B)}{P(B)}\\\\P(A \cap B)=P(A|B)*P(B)\\\\Substituting:\\\\P(A \cap B)=1/4*7/20=7/80\\\\P(A \cap B)=7/80$

6 0

3 years ago

Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and

sergij07 [2.7K]

Answer:

a) sample size is 40

Step-by-step explanation:

(a)

$\sigma=4$ minutes

Margin of error, E is 75 seconds E=75/60= 1.25 minutes.

The level of significance $\alpha= 0.05$ for 95% level of significance

For 95% confidence interval $z_{\frac{\alpha}{2}}=1.96$ from standard deviation table

Sample size required, n

$n=\left (\frac{z_{\frac{\alpha}{2}}\cdot \sigma}{E} \right )^{2}=\left (\frac{1.96\cdot4}{75/60} \right )^{2}=39.337984$

Rounding off, n=40

Sample size =40

Keywords:

95% confidence, sample size, Wall Street Journal

3 0

4 years ago

Plz answer this now anyone

bearhunter [10]

answer is f hope u like it plz mark me as brainliest plzzzzzzzzzzzzz

5 0

3 years ago

The parabola y=x^2 is reflected across the x-axis and then scaled vertically by a factor of 4/3 What is the equation of the new

Strike441 [17]

Answer: y = $-\frac{4}{3}x^{2}$

<u>Step-by-step explanation:</u>

y = ax² ; where a represents the vertical stretch

a reflection across the x-axis is represented by making the a-value negative.

7 0

3 years ago

Read 2 more answers

Pounds gained by persons in your class during the first month of the semester are an example of which type of data?.

kozerog [31]

Pounds gained by persons in your class during the first month of the semester are an example of: Continuous data.

<h3>What is continuous data?</h3>

Continuous data refers to data types that cannot be counted but can be measured. So, the values of these types of data are obtainable.

Examples of continuous data include the weight, height, and length of people and objects.

So, the pounds gained by persons in your class is an example of continuous data.

Learn more about continuous data here:

brainly.com/question/7717858

8 0

2 years ago