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shepuryov [24]
3 years ago
5

Lucky and Ajay are given some money each week. If Lucky and Ajay each spend

Mathematics
1 answer:
LuckyWell [14K]3 years ago
3 0

Answer:

DO YOU STILL NEED HELP?

Step-by-step explanation:

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What is the area of the figure below? The figure shows a parallelogram. the left side equals 5 inches. The bottom side equals 12
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Answer:

A = 36 in.²

Step-by-step explanation:

The area of a parallelogram can be determined by the formula:

A = bh

The base length is 12 inches and the height is 3 inches.

A = 12in. * 3in.

A = 36 in.²

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Margaret is a waitress at The Seafood Bonanza. She earns $3 an hour plus 90% of her tips. Write an equation for her salary, S, i
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Step-by-step explanation:

90% is the same as 0.9 of..

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A. Sin40=6/x<br> B. Sin40= x/6<br> C. Cos40= x/6<br> D. Cos40=6/x
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A set of test scores is normally distributed with a mean of 130 and a standard deviation of 30 What score is necessary to reach
nlexa [21]

Answer:

A score of 150.25 is necessary to reach the 75th percentile.

Step-by-step explanation:

Problems of normal distributions can be 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}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

A set of test scores is normally distributed with a mean of 130 and a standard deviation of 30.

This means that \mu = 130, \sigma = 30

What score is necessary to reach the 75th percentile?

This is X when Z has a pvalue of 0.75, so X when Z = 0.675.

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

0.675 = \frac{X - 130}{30}

X - 130 = 0.675*30

X = 150.25

A score of 150.25 is necessary to reach the 75th percentile.

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3 years ago
Ppppplease help me asap!!! 15 points!!!!!
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Imagine a ladder leaning against the wall and you know the height of the ladder and its distance from the wall and you had to find out the height you could use pythagorean theorem here
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3 years ago
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