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Greeley [361]
2 years ago
6

What 4a+7b+5a-b please sorry

Mathematics
2 answers:
Vanyuwa [196]2 years ago
8 0

Answer:

Step-by-step explanation:

Its 46

nataly862011 [7]2 years ago
6 0

46

happy valentines day!

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HELP ME WILL MARK BRIANLEST Molly and Maddie are clothes shopping. Molly has $100.00 and a coupon for a $5.00 discount at a clot
Sever21 [200]

Molly's equation

15x + 10 = 100

     -10       -10

15x=90

/15    /15

x=6

Maddie's equation

15x - 10 = 100

     +10      +10

15x=110

/15     /15

x=7 1/3

MADDIE IS RIGHT

this is because she said 7 ans=d you cannot buy 1/3 of a shirt.

give the guy under me the 5 stare and a thanks this is his answer

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3 years ago
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A hat that originally cost 12.50 with a 60% markup find the total cost
cluponka [151]

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$20.00 dollars will be the new cost.

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2 years ago
A store offers four different brands of a product. It decides to eliminate the
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Brand D has the highest return rate so they should eliminate that one.

Step-by-step explanation:

brand A - .0481

brand B - .0307

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3 years ago
Helppppppp??????!!!!!!!!!!
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A population has a standard deviation of 5.5. What is the standard error of the sampling distribution if the sample size is 81?
VladimirAG [237]

Answer:

\sigma = 5.5

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution \bar X and for this case we know that the distribution is given by:

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

And the standard error would be:

\sigma_{\bar x}= \frac{\sigma}{\sqrt{n}}

And replacing we got:

\sigma_{\bar x}=\frac{5.5}{\sqrt{81}}= 0.611

Step-by-step explanation:

For this case we know the population deviation given by:

\sigma = 5.5

And we have a sample size of n =81. We want to estimate the standard error of the sampling distribution \bar X and for this case we know that the distribution is given by:

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

And the standard error would be:

\sigma_{\bar x}= \frac{\sigma}{\sqrt{n}}

And replacing we got:

\sigma_{\bar x}=\frac{5.5}{\sqrt{81}}= 0.611

4 0
3 years ago
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