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3 years ago

Find the original price before discount if discount is 25% and original price $25

Mathematics

1 answer:

Lera25 [3.4K]3 years ago

4 0

Answer:

umm im kinda confused but this may be the answer if you clarified.

25 is the answer after the discount but before the discount it would be 31.25 beccause...

Step-by-step explanation:

25 percent of 25= 6.25 so

6.25 plus 25= 31.25

hope this helped!

brainliest

-S

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Erik and Nita are playing a game with numbers. In the game, they each think of a random number from zero to 20. If the differenc

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Let X is the random number Erik thinks of, and Y is the random number Nita thinks of.
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The difference between the two numbers can be written X-Y, or Y-X depending on which number (X or Y) is greater. But we do not know that. In order not to get negative value, we calculate absolute value of X-Y, written |X-Y| which will give positive value whether X is greater than Y or not.
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3 years ago

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3 years ago

Keenan scored 80 points on an exam that had a mean score of 77 points and a standard deviation of 4.9 points. Rachel scored 78 p

Artemon [7]

Answer:

Keenan's z-score was of 0.61.

Rachel's z-score was of 0.81.

Step-by-step explanation:

Z-score:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Keenan scored 80 points on an exam that had a mean score of 77 points and a standard deviation of 4.9 points.

This means that $X = 80, \mu = 77, \sigma = 4.9$