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Svetradugi [14.3K]
2 years ago
12

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

Mathematics
1 answer:
Lera25 [3.4K]2 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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. If IQ scores are normally distributed with a mean of 100 and a standard deviation of 5, what is the probability that a person
bulgar [2K]

Answer:

2.28% probability that a person selected at random will have an IQ of 110 or greater

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}

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.

In this problem, we have that:

\mu = 100, \sigma = 5

What is the probability that a person selected at random will have an IQ of 110 or greater?

This is 1 subtracted by the pvalue of Z when X = 110. So

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

Z = \frac{110 - 100}{5}

Z = 2

Z = 2 has a pvalue of 0.9772

1 - 0.9772 = 0.0228

2.28% probability that a person selected at random will have an IQ of 110 or greater

5 0
3 years ago
Find the
Mazyrski [523]

Answer:

54 cm

Step-by-step explanation:

The area (A) of an equilateral triangle is

A = \frac{s^2\sqrt{3} }{4}  ( s is the side length ) then

\frac{s^2\sqrt{3} }{4} = 81\sqrt{3} ( multiply both sides by 4 to clear the fraction )

s²\sqrt{3} = 324\sqrt{3} ( divide both sides by \sqrt{3} )

s² = 324 ( take the square root of both sides )

s = \sqrt{324} = 18

Thus

perimeter = 3 × 18 = 54 cm

3 0
3 years ago
Choose the option that correctly completes the statement.
Tresset [83]

The answer is:

The measure of an exterior angle of a triangle is equal to the sum of the measures of the remote interior angles.

8 0
3 years ago
Solve the inequality<br> 3/10 ≥ k - 3/5
balandron [24]

Answer:

The answer to your question is    k \leq  \frac{9}{10}   or    (-∞ , 9/10]                                      

Step-by-step explanation:

To solve inequality is similar to solve and equation, we just need to find the values of "k" in order than the inequality be true.

                                         k - \frac{3}{5} \leq  \frac{3}{10}

Solve for "k"

                                        k \leq  \frac{3}{10} + \frac{3}{5}

                                        k \leq  \frac{3}{10} + \frac{6}{10}

                                        k \leq  \frac{9}{10}

Then the answer is

                               k \leq  \frac{9}{10}   or    (-∞ , 9/10]                                      

8 0
3 years ago
Can someone help me out ? ASAP
viktelen [127]

Answer:

Reflection

Step-by-step explanation:

5 0
3 years ago
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