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4 years ago

Shylah is purchasing 4 patio chairs that are each 25% off the original price p.

Mathematics

1 answer:

Anna71 [15]4 years ago

8 0

Answer: Second option is correct.

Step-by-step explanation:

Let the original price of chair be 'p'.

Number of chairs = 4

Discount rate = 25%

So, Amount of discount would be

$\dfrac{25}{100}p\\\\=0.25p$

So, Cost of each chair after discount would be

$p-0.25p$

So, Cost of all 4 chairs would be

$4(p-0.25p)$

Hence, Second option is correct.

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Lines m and n are parallel. What is the measure of angle 5? 30° 45° 60° 90°

SashulF [63]

48 degrees. 132 and angle 4 are alternate interior angles then you 180-132= 48

7 0

3 years ago

At a canning facility, a technician is testing a machine that is supposed to deliver 250 milliliters of product. The technician

Vinvika [58]

Answer:

1.97

Step-by-step explanation:

The null hypothesis is:

$H_{0} = 250$

The alternate hypotesis is:

$H_{1} \neq 250$

Our test statistic is:

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the hypothesis tested(null hypothesis), $\sigma$ is the standard deviation and n is the size of the sample.

In this problem, we have that:

$X = 251.6, \mu = 250, \sigma = 5.4, n = 44$

$t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$t = \frac{251.6 - 250}{\frac{5.4}{\sqrt{44}}}$

$t = 1.97$

8 0

3 years ago

If c= the number of cars in a parking lot, which algebraic expressions represent the phrase below? 9 more than the number of car

Anestetic [448]

C + 9 because you are adding o mode cars and an expression doesn't have an equal sign (=)

5 0

4 years ago

Read 2 more answers

An experiment was conducted to test the effect of a new cholesterol medicine. Fifteen people were treated with medicine X and 15

gtnhenbr [62]

Considering the hypothesis tested and the p-value of the test, the correct option is given by:

There is sufficient evidence that there is a difference in mean cholesterol level when using medicine X and medicine Y.

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if there is no difference between the cholesterol levels, that is:

H₀:Hₓ-H

At the alternative hypothesis it is tested if there is a difference, hence:

H₀:Hₓ-H≠0

The p-value is of 0.003 < 0.01, hence we reject the null hypothesis and conclude that there has was a difference, hence the correct option is given by:

There is sufficient evidence that there is a difference in mean cholesterol level when using medicine X and medicine Y.

More can be learned about hypothesis tests at brainly.com/question/26454209

#SPJ1

6 0

2 years ago

Given right triangle MNL, what is the value of cos(M)? Three-fifths Three-fourths Four-fifths Five-thirds

lidiya [134]

By applying the Pythagorean Theorem and the Trigonometry ratio, CAH, the value of cos(M) = 4/5

Recall:

Trigonometry ratios, SOH CAH TOA can be applied to solve a right triangle.

Pythagorean Theorem can also be applied which is: c² = b² + a², where c is the longest side (hypotenuse length).

Given:

ΔMNL is a right triangle

ML = 25

NL = 15

Find MN using the Pythagorean Theorem:

MN = √(ML² - NL²)

MN = √(25² - 15²)

MN = 20

To find the value of cos(M), apply the trigonometry ratio, CAH, which is:

cos ∅ = Adj/Hyp

Where,

∅ = M (reference angle)

Hypotenuse = ML = 25

Adjacent = MN = 20

Plug in the values:

cos(M) = 20/25

cos(M) = 4/5

Learn more about Trigonometry ratios on:

brainly.com/question/10417664

5 0

3 years ago