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Margarita [4]
3 years ago
6

Can someone please answer this for me and with solution and "Checking"( to see if your answer is correct) please.​

Mathematics
1 answer:
mamaluj [8]3 years ago
4 0

Answer:

√9/√13=5

√10-3r=r

Step-by-step explanation:

this must be the answer

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Which compound inequality is represented by the graph?
vampirchik [111]

The compound inequality represented by the graph shown in the image below is 5 < x < 9

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

The image shown represents a compound inequality. It represents:

x > 5 and x < 9

The compound inequality represented by the graph shown in the image below is 5 < x < 9

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Step-by-step explanation:

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What is the solution for this inequality? 3(x-4)&gt;5(x-2)-8
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3 years ago
I am needing to know the answer to 3/7 of what number is 9?
kolezko [41]
In math, "of" almost always means "times".

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3 0
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Read 2 more answers
There are 42 students in an elementary statistics class. On the basis of years of experience, the instructor knows that the time
harkovskaia [24]

Answer:

A) 0.99413

B) 0.00022

Step-by-step explanation:

A) First of all let's find the total grading time from 6:50 P.M to 11:00 P.M.:

Total grading time; X = 11:00 - 6:50 = 4hours 10minutes = 250 minutes

Now since we are given an expected value of 5 minutes, the mean grading time for the whole population would be:

μ = n*μ_s ample = 42 × 5 = 210 minutes

While the standard deviation for the population would be:

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To find the z-score, we will use the formula;

z = (x - μ)/σ

Thus;

z = (250 - 210)/15.8745

z = 2.52

From the z-distribution table attached, we have;

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B) solving this is almost the same as in A above, the only difference is an additional 10 minutes to the time.

Thus, total time is now 250 + 10 = 260 minutes

Similar to the z-formula in A above, we have;

z = (260 - 210)/15.8745

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P(Z > 3.15) = 0.00022

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3 years ago
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