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2 years ago

What is the answer???

Mathematics

1 answer:

cupoosta [38]2 years ago

6 0

Answer: not sure, hope you fail!

Step-by-step explanation:

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Solve equation s - 12= 20. s=?

svetlana [45]

Answer:

s-12=20

:. 20+12=s

20+12=32

<h2>your answer is 32</h2><h2>s=32</h2>

Step-by-step explanation:

<h2>hope its fine buddy</h2>

3 0

2 years ago

Read 2 more answers

Test scores are normally distributed with a mean of 500. Convert the given score to a z-score, using the given standard deviatio

Bond [772]

Answer:

The percentage of students who scored below 620 is 93.32%.

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 question, we have that:

$\mu = 500, \sigma = 80$

Percentage of students who scored below 620:

This is the pvalue of Z when X = 620. So

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

$Z = \frac{620 - 500}{80}$

$Z = 1.5$

$Z = 1.5$ has a pvalue of 0.9332

The percentage of students who scored below 620 is 93.32%.

3 0

3 years ago

Read 2 more answers

Follow up question how do you do it when it's e^4?

lesya [120]

Ln 54.598... = 4 because ln = log e

5 0

2 years ago

The diameter of a sphere is 4 centimeters.

ELEN [110]

The volume of a sphere refers to the number of cubic units that will exactly fill a sphere. The volume of a sphere can be found or calculate by using the formula V=4/3πr^3, where r represents the radius of the figure.

In this exercise is given that a sphere has a radius of 4 centimeters and it is asked to find its volume and use 3.14 as the value of π or pi. The first step would be substitute the values into the previous mention formula.

V=4/3πr^3
V=4/3(3.14)(4 cm)^3
V=4/3)(3.14)(64 cm^3)
V=267.9 cm^3
The volume of the sphere is 267.9 cubic centimeters.

7 0

3 years ago

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Which statement is not correct?

Pachacha [2.7K]

Answer:

b.) because it is over 90*

Step-by-step explanation:

8 0

2 years ago