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2 years ago

Q # 1 simplify the expression

Mathematics

1 answer:

Agata [3.3K]2 years ago

5 0

<u>Answer</u>

95,040

<u>Explanation</u>
The interpretation of this expression is; the number of permutation of 5 objects out of 12.

12P5 = 12!/(12-5)!

=12!/7!
=(12×11×10×9×8×7×6×5×4×3×2×1)/(7×6×5×4×3×2×1)

=12×11×10×9×8
=95,040

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Mr smith owns a bike store and typically marks up the bikes 20% over the price that the bikes cost him. The bikes cost him 69.95

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Answer: $83.94

Step-by-step explanation:

20% = 0.2

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3 years ago

Which is a solution of the inequality 5≤−4x−65≤−4x−6?

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Step 1: Add 65 to all sides

Step 2: Add 4x to all sides

Step 3: subtract 70 to all sides

Step 4: divide by 4 to all sides

Ending: x is greater than or equal to -17.5

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Answer: NO SOLUTION (yayayyayay).

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3 years ago

Dividends Per Share Seventy-Two Inc., a developer of radiology equipment, has stock outstanding as follows: 60,000 shares of cum

Sergeeva-Olga [200]

The dividends per share on each class of stock for each of the four years for Seventy-Two Inc. are as follows:

<h3>Cumulative Preferred Stock:</h3>

Year 1 Year 2 Year 3 Year 4

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<h3>Common Stock:</h3>

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<h3>Data and Calculations:</h3>

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Par Value $20 $25

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Learn more about dividends at brainly.com/question/25845157

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2 years ago

It is advertised that the average braking distance for a small car traveling at 65 miles per hour equals 120 feet. A transportat

Mrrafil [7]

Answer:

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the mean is equal to 120 or not, the system of hypothesis would be:

Null hypothesis: $\mu = 120$

Alternative hypothesis: $\mu \neq 120$

Part 2

Calculate the statistic

We can replace in formula (1) the info given like this:

$z=\frac{114-120}{\frac{22}{\sqrt{36}}}=-1.636$

P-value

Since is a two sided test the p value would be:

$p_v =2*P(z$

Step-by-step explanation:

Data given and notation

$\bar X=114$ represent the sample mean

$\sigma=22$ represent the population standard deviation

$n=36$ sample size

$\mu_o =120$ represent the value that we want to test

$\alpha$ represent the significance level for the hypothesis test.

t would represent the statistic (variable of interest)

$p_v$ represent the p value for the test (variable of interest)

Part 1

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the mean is equal to 120 or not, the system of hypothesis would be:

Null hypothesis: $\mu = 120$

Alternative hypothesis: $\mu \neq 120$

If we analyze the size for the sample is > 30 and we know the population deviation so is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

Part 2

Calculate the statistic

We can replace in formula (1) the info given like this:

$z=\frac{114-120}{\frac{22}{\sqrt{36}}}=-1.636$

P-value

Since is a two sided test the p value would be:

$p_v =2*P(z$

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2 years ago

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ycow [4]

a. true

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c. true

d. true

e. true

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3 years ago