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3 years ago

Im crying please help me so much

Mathematics

2 answers:

Marina CMI [18]3 years ago

8 0

Answer:

A and D

Step-by-step explanation:

kenny6666 [7]3 years ago

6 0

Answer:

I know A is one of them, not sure about the others, sorry

Step-by-step explanation:

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Which is larger 35% or 2/5 ?

LenaWriter [7]

$\frac{2}{5}$ because if you convert 2/5 it is 40%.

5 0

4 years ago

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Suppose a certain airline uses passenger seats that are 16.2 inches wide. Assume that adult men have hip breadths that are norma

Pachacha [2.7K]

Answer:

Each adult male has a 5.05% probability of having a hip width greater than 16.2 inches.

There is a 0.01% probability that the 110 adult men will have an average hip width greater than 16.2 inches.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by

$Z = \frac{X - \mu}{\sigma}$

After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X. Subtracting 1 by the pvalue, we This p-value is the probability that the value of the measure is greater than X.

In this problem

Assume that adult men have hip breadths that are normally distributed with a mean of 14.4 inches and a standard deviation of 1.1 inches. This means that $\mu = 14.4, \sigma = 1.1$ .

What is the probability that any one of those adult male will have a hip width greater than 16.2 inches?

For each one of these adult males, the probability that they have a hip width greater than 16.2 inches is 1 subtracted by the pvalue of Z when X = 16.2. So:

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{16.2 - 14.4}{1.1}$

$Z = 1.64$

$Z = 1.64$ has a pvalue of 0.9495.

This means that each male has a 1-0.9495 = 0.0505 = 5.05% probability of having a hip width greater than 16.2 inches.

For the average of the sample

What is the probability that the 110 adult men will have an average hip width greater than 16.2 inches?

Now, we need to find the standard deviation of the sample before using the zscore formula. That is:

$s = \frac{\sigma}{\sqrt{110}} = 0.1$ .

Now

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{16.2 - 14.4}{0.1}$

$Z = 18$

$Z = 18$ has a pvalue of 0.9999.

This means that there is a 1-0.9999 = 0.0001 = 0.01% probability that the 110 adult men will have an average hip width greater than 16.2 inches.

7 0

3 years ago

Do you guys know how to delete a question???

Tasya [4]

I think question cannot be deleted here because I also tried

5 0

3 years ago

Read 2 more answers

Evelyn is using her grandmother's pancake recipe, but she wants to make 40% more pancakes than the recipe usually prepares. If h

Aleks04 [339]

(C) 7/10 cup is the correct answer

Step-by-step explanation:

First of all we will calculate the 40% of grandmother's recipe then add it to the given flour in grandma's recipe

So,

The amount of flour in grandma's recipe = F_g = 1/2 cups

Calculating percentage

$=40\%\ of\ \frac{1}{2}\\=\frac{40}{100}*\frac{1}{2}\\=\frac{2}{10}$

So Evelyn needs to add 2/10 cups more to the original quantity.

So,

Flour used by Evelyn:

$=\frac{1}{2}+\frac{2}{10}\\\\=\frac{5+2}{10}\\\\=\frac{7}{10}\ cups$

Hence,

(C) 7/10 cup is the correct answer

Keywords: Percentage, Quantity

Learn more about percentage at:

#LearnwithBrainly

3 0

4 years ago

Converting Point-Slope Use the point-slope form of a line to write the equation of a line that has a slope of 2 and passes throu

Veseljchak [2.6K]

Here is HOW to do it.....:

Input Data :

Coordinates

(

)

(xA,yA)

= (5, 4)

Slope (m) = 8

Objective :

Find slope of a straight line?

Formula :

−

(

−

)

y-yA=m(x-xA)

Solution :

y - 4 = 8 (x - 5)

y - 4 = 8x - 40

y = 8x - 40 + 4

y = 8x - 36

8x - y - 36 = 0

6 0

4 years ago

Read 2 more answers