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3 years ago

HELP ASAP PLZ

Mathematics

2 answers:

xz_007 [3.2K]3 years ago

7 0

Answer:

10!/3!

Step-by-step explanation:

i just took a test and got it right

Because repetition is not allowed, and there are 10 initial options for the 7 decisions that need to be made, we use the formula

n!/(n-r)! = 10!/(10-7)! = 10!/3!

marishachu [46]3 years ago

4 0

Answer:

There are 604,800 possible permutations.

Step-by-step explanation:

The order in which the digits are chosen is important, which means that the permutations formula is used to solve this question.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

$P_{(n,x)} = \frac{n!}{(n-x)!}$

In this question:

7 digits from a set of 10(10 digits to 0-9). So

$P_{(10,7)} = \frac{10!}{(10-7)!} = 604800$

There are 604,800 possible permutations.

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A company is approached by a new warehouse management systems vendor to adopt a new system. The vendor claims that the warehouse

Ludmilka [50]

Answer:

The null hypothesis is $H_o : \mu = 180$

The alternative hypothesis is $H_a : \mu < 180$

The decision rule is fail to reject the null hypothesis

The conclusion

There no sufficient evidence to support the vendor claim that the warehouse management system reduces the average pick, pack, and ship time to below 3 minutes(180 seconds) per order through bin location and routing optimization

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 3 \ minutes = 180 \ seconds$

The sample size is n = 25

The excel sheet is show on the first uploaded image

The level of significance is $\alpha = 0.05$

The null hypothesis is $H_o : \mu = 180$

The alternative hypothesis is $H_a : \mu < 180$

Generally the sample mean is mathematically represented as

$\= x = \frac{156 + 136 + \cdots + 181}{25}$

=> $\= x = 173.2$

Generally the standard deviation is mathematically represented as

$\sigma = \sqrt{\frac{\sum (x_i - \= x )^2 }{n} }$

=> $\sigma = \sqrt{\frac{ (156 - 173.2 )^2 + (136 - 173.2 )^2 + \cdots + (181- 173.2 )^2 }{25} }$

=> $\sigma = 24.261$

Generally the test statistics is mathematically represented as

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

=> $t = \frac{173.2 - 180 }{\frac{24.261}{\sqrt{25} } }$

=> $z = -1.40$

Generally p-value is mathematically represented as

$p-value = P(Z < z)$

=> $p-value = P(Z < -1.40)$

From the z-table

$P(Z < -1.40) = 0.080757$

=> $p-value = 0.080757$

From the obtained value we that $p-value > \alpha$

The decision rule is fail to reject the null hypothesis

The conclusion

5 0

3 years ago

Mr. Martinez wants to get a cell-phone plan. He has

garri49 [273]

Answer:

Deal B is better

Step-by-step explanation:

over a year in payment Deal b will be less

6 0

3 years ago

What is the area of the shaded region?

ella [17]

33cm

Because add all of them then subtract then do the parenthasees and you get 33

3 0

3 years ago

Find the equation of the line with slope 7 which goes through the point (-2,-9).

nexus9112 [7]

Answer:

y=7x+5

Step-by-step explanation:

y-y1=m(x-x1)

y-(-9)=7(x-(-2))

y+9=7(x+2)

y+9=7x+14

y=7x+14-9

y=7x+5

Please mark me as Brainliest if you're satisfied with the answer.

8 0

3 years ago

Find the rate of change between (-3,6) (0,-3)

marin [14]

<h3>The rate of change between (-3,6) (0,-3) is -3</h3>

Solution:

Given that,

We have to find the rate of change between (-3,6) (0,-3)

The rate of change is given as:

$Rate\ of\ change = \frac{y_2-y_1}{x_2-x_1}$

From given,

$(x_1, y_1) = (-3, 6)\\\\(x_2, y_2) = (0, -3)$

Substituting the values we get,

$Rate\ of\ change = \frac{-3-6}{0+3}\\\\Rate\ of\ change = \frac{-9}{3}\\\\Rate\ of\ change = -3$

Thus rate of change is -3

3 0

3 years ago