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Hitman42 [59]
3 years ago
10

Eloise got the following scores on the first five quizzes of the semester: 6,9,7,8,9. There is one more quiz left. What score mu

st Eloise get on the last quiz to have a mean quiz score of 8? Explain how you found your answer
Mathematics
1 answer:
elena55 [62]3 years ago
5 0

Answer:

9

Step-by-step explanation:

when u add her past five scored together, you get 39. your equation would be

39 + x

-------------         = 8

6

you multiply both sides by 6 and get

39+x = 48

subtract 39 from both sides to get 9

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take 1.3 x 2, then subtract 12.7, finally divide that by 7
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4 years ago
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SVETLANKA909090 [29]

Data:

15 16 14 15 19 17

n=6 points

sum is 96

mean is 96/6 = 16

Now we look at the absolute deviations, each of which is the absolute value of a score minus the mean, basically the distance of the score to the mean .

Scores   15 16 14 15 19 17

AbsDev    1  0  2  1    3  1

The sum of the absolute deviations is 8 and there are six of them so the

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3 years ago
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MaRussiya [10]

Answer:

Step-by-step explanation:

Angle C and angle with 120 degrees measure are alternate and their measurement is equal so C = 120

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angle D and angle B are also alternate so their measure is also equal to each other therefore

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3 years ago
HELP ASAP FOR BRAINLIEST: The mean score for a standardized test is 1700 points. The results are normally distributed with a sta
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Answer:

Step-by-step explanation:

Since the results for the standardized test are normally distributed, we would apply the formula for normal distribution which is expressed as

z = (x - µ)/σ

Where

x = test reults

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σ = standard deviation

From the information given,

µ = 1700 points

σ = 75 points

We want to the probability that a student will score more than 1700 points. This is expressed as

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For x = 1700,

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Looking at the normal distribution table, the probability corresponding to the z score is 0.5

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8 0
3 years ago
Consider the line y = 1/4 - 5/4 x<br> Slope of a parallel line<br> Slope of a perpendicular line
gladu [14]

Answer:

parallel line slop2 = -5/4

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Step-by-step explanation:

If 2 lines are parallel, they will have equal slopes.

Therefore, the slope of a line parallel to y = 1/4 - 5/4 x will be -5/4

If 2 lines are perpendicular, their slopes are negative reciprocals of each other.  So the slope of the perpendicular line = -1 ÷ -5/4 = 4/5

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2 years ago
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