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Bad White [126]
3 years ago
9

Help pls just with 2 and 6 if the rest looks wrong just tell me but all I need help with is 2 and 6 thx peeps ;) brainliest bob!

I like to randomly say bob)

Mathematics
1 answer:
olga_2 [115]3 years ago
7 0

Answer:

2. C

6. C

(the others are correct)

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What is the value of x?<br><br><br><br> Enter your answer in the box.<br><br><br> _____ units
krek1111 [17]

Answer:

x=28

Step-by-step explanation:

We can use similar triangles and proportions to solve this problem.  Put the side of the small triangle over the same side of the larger triangle.

x               42

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x+10           42+15

Simplify

x               42

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Using cross products

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Answer:

16. Right isosceles

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A humanities professor assigns letter grades on a test according to the following scheme. A: Top 12% of scores B: Scores below t
RUDIKE [14]

Answer:

The minimum score required for an A grade is 88.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

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In this problem, we have that:

\mu = 77.8, \sigma = 8.5

Find the minimum score required for an A grade.

Top 12%, which is at least the 100-12 = 88th percentile, which is the value of X when Z has a pvalue of 0.88. So it is X when Z = 1.175.

Z = \frac{X - \mu}{\sigma}

1.175 = \frac{X - 77.8}{8.5}

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Rounding to the nearest whole number

The minimum score required for an A grade is 88.

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