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3 years ago

PLSSS HELPP ASAP

Mathematics

1 answer:

dezoksy [38]3 years ago

7 0

Answer:

choose B is the greatest variablity

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Let r(d) represent the monthly revenue, in dollars, from selling skateboards when the price of a skateboard has been decreased b

vodka [1.7K]

Answer:

A.\ \ r(d)=-100(d-25)^2+122,500

Hope this helps!

3 0

3 years ago

When finding the margin of error for the mean of a normally distributed population from a sample, what is Alpha, assuming a conf

MArishka [77]

The value of alpha is 0.26, assuming a confidence level of 74%.

<h3>What is the margin of error?</h3>

The significance level α is the probability of making the wrong decision when the null hypothesis is true.

Alpha levels which is also called as significance levels are used in hypothesis tests.

Given

When finding the margin of error for the mean of a normally distributed population from a sample.

The confidence interval = 74% = 0.74.

The value of the alpha is given by;

$\rm \alpha =1- Confidence \ interval$

Substitute all the values in the formula

$\rm \alpha =1- Confidence \ interval\\\\\alpha=1-0.74\\\\\alpha=0.26$

Hence, the value of alpha is 0.26, assuming a confidence level of 74%.

To know more about confidence interval click the link given below.

brainly.com/question/26725727

8 0

2 years ago

Working together, it takes two computers 20 minutes to send out a company's email. If it takes the slower computer 45 minutes to

11Alexandr11 [23.1K]

Answer:

36 minutes

Step-by-step explanation:

Let the productivity of slower computer is x bits/min

That means Slower computer in 45 minutes sends x*45 bits= company's email

Let the productivity of faster computer is y bits/min

That means that working together slower and faster computers send

x*20+y*20= company's email or

x*20+y*20=x*45

x*25=y*20

y/x=25/20= 1,25

That means that faster computer sends the mails 1.25 times faster than slower computer

So faster computer will need in 1.25 times lees time than slower computer to do this job

45:1.25 =36 min

6 0

3 years ago

Please someone help. Giving brainliest!!

hammer [34]

Answer:

I am pretty sure the answer is 3. hope this helps

7 0

2 years ago

Read 2 more answers

A dairy cow can produce 5400 quarts of milk per year. Suppose there are about 6.4 million cows in the U.S.

Ilya [14]

Answer:

3.46 x $10^{10}$

Step-by-step explanation:

Number of cows 6.4 million = 6.4 x $10^{6}$

production rate for each cow per year = 5400 = 5.4 x 10³

Total amount of milk produced per year,

= 6.4 x $10^{6}$ x 5.4 x 10³

= (6.4) (5.4) x $10^{6+3}$

= 34.56 x $10^{9}$

= 3.46 x $10^{10}$

5 0

3 years ago