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nekit [7.7K]
3 years ago
10

stephen earned scores of 88 points, 94 points, 89 points, and 85 points on four tests. what is the lowest score he can get on th

e fifth test and still finish with an average score of 90 points? 94 points 95 points 96 points 97 points
Mathematics
2 answers:
Olenka [21]3 years ago
3 0
(88 + 94 + 89 + 85 + x) / 5 = 90
(356 + x) / 5 = 90
356 + x = 90 * 5
356 + x = 450
x = 450 - 356
x = 94 <==
zhenek [66]3 years ago
3 0

Answer:

<h2><u>It's 94 </u></h2>

Step-by-step explanation: i got this question right on my test.

Hope this helps!

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If x represents a number, then write an expression for one half the sum of x and 7.
Lostsunrise [7]

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1/2(x+7)

Step-by-step explanation:

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Michmoo Computer Company sells computers and computer parts by mail. The company assures its customers that products are mailed
Anastaziya [24]

Answer: (60.858, 69.142)

Step-by-step explanation:

The formula to find the confidence interval for mean :

\overline{x}\pm z_c\dfrac{\sigma}{\sqrt{n}} , where \overline{x} is the sample mean , \sigma is the population standard deviation , n is the sample size and z_c is the two-tailed test value for z.

Let x represents the time taken to mail products for all orders received at the office of this company.

As per given , we have

Confidence level : 95%

n= 62

sample mean : \overline{x}=65 hours

Population standard deviation : \sigma=18 hours

z-value for 93% confidence interval: z_c=1.8119  [using z-value table]

Now, 93% confidence the mean time taken to mail products for all orders received at the office of this company :-

65\pm (1.8119)\dfrac{18}{\sqrt{62}}\\\\ 65\pm4.142\\\\=(65-4.142,\ 65+4.142)\\\\= (60.858,\ 69.142)

Thus , 93% confidence the mean time taken to mail products for all orders received at the office of this company : (60.858, 69.142)

8 0
3 years ago
The square of the sum 5 and 8
kipiarov [429]

\underline{ \huge{ \red{Solution: }}} \\  \\  {(5 + 8)}^{2}  \\  \\  =  {13}^{2}  \\  \\  = 169
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Is the function y=<br> 1<br> 5x<br> +2 linear or nonlinear?
krek1111 [17]

Answer:

Your answer should be Linear.

Hope this helps! :)

6 0
2 years ago
Read 2 more answers
A worm wriggled forward 4/5 of an inch in 3 minutes. At that rate, how far would the worm go in 1 minute?
Thepotemich [5.8K]

Answer:

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Step-by-step explanation:

A worm wriggled forward 4/5 of an inch in 3 minutes.

=> At that rate, the distance the worm would go in 1 minute is:

D = (4/5)/3 = 4/(5x3) = 4/15 of an inch

Hope this helps!

8 0
3 years ago
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