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dexar [7]
3 years ago
14

Help me please 7th grade math

Mathematics
1 answer:
kap26 [50]3 years ago
5 0

ANswer is C = 1.50p

Hope that helps

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A certain car model has a mean gas mileage of 34 miles per gallon (mpg) with a standard deviation A pizza delivery company buys
zubka84 [21]

Answer:

z =\frac{33.3- 34}{\frac{5}{\sqrt{54}}}= -1.028

z =\frac{34.3- 34}{\frac{5}{\sqrt{54}}}= 0.441

An we can use the normal standard table and the following difference and we got this result:

P(-1.028

Step-by-step explanation:

Assuming this statement to complete the problem "with a standard deviation 5 mpg"

We have the following info given:

\mu = 34 represent the mean

\sigma= 5 represent the deviation

We have a sample size of n = 54 and we want to find this probability:

P(33.3 < \bar X< 34.3)

And for this case since the sample size is large enough >30 we can apply the central limit theorem and then we can use this distribution:

\bar X \sim N(\mu , \frac{\sigma}{\sqrt{n}})

And we can use the z score formula given by:

z=\frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

And replacing we got:

z =\frac{33.3- 34}{\frac{5}{\sqrt{54}}}= -1.028

z =\frac{34.3- 34}{\frac{5}{\sqrt{54}}}= 0.441

An we can use the normal standard table and the following difference and we got this result:

P(-1.028

7 0
3 years ago
Which expression can be used to find 32% of 130?
Gemiola [76]

Answer:

b. 0.32 • 130

Step-by-step explanation:

Change the percent to decimal form

32% = .32

.32 * 130

6 0
3 years ago
Help me plz jdjdrjiejdncfjficmdmkwkefjvnfjeje
Oxana [17]

Answer:

-1 5/36

Step-by-step explanation:

8 0
3 years ago
What is the solution to the equation 3 + = 4? y = y = y = 1 y = 4
kvv77 [185]

Answer:

y = 1

Step-by-step explanation:

3 + y = 4

y = 1

6 0
3 years ago
Read 2 more answers
Expand the expression and combine like terms:<br> 1+4(6p-9)
Sedaia [141]
1+4(6p-9) \\ \\ 1 + 24p - 36 \\ \\ 24p - 35 \\ \\

The final result is: 24p - 35.
5 0
3 years ago
Read 2 more answers
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