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3 years ago

can someone please help me with this question. And the question is the question that is not answered.

Mathematics

2 answers:

Charra [1.4K]3 years ago

7 0

The answer is D)9. Because 45 divide by 5 is 9. And 5 times 9 is 45.

serg [7]3 years ago

4 0

Ok you need to do 45/5 to get 9.

Therefore your answer is 9 inches.

Comment if you have questions glad to help!

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The weekly amount of money spent on maintenance and repairs by a company was observed, over a long period of time, to be approxi

bazaltina [42]

Answer:

$425.6 should be budgeted for weekly repairs and maintenance.

Step-by-step explanation:

Normal Probability Distribution:

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.

Mean $400 and standard deviation $20.

This means that $\mu = 400, \sigma = 20$

How much should be budgeted for weekly repairs and maintenance to provide that the probability the budgeted amount will be exceeded in a given week is only 0.1?

This is the 100 - 10 = 90th percentile, which is X when Z has a p-value of 0.9, so X when Z = 1.28.

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

$1.28 = \frac{X - 400}{20}$

$X - 400 = 20*1.28$

$X = 425.6$

$425.6 should be budgeted for weekly repairs and maintenance.

6 0

3 years ago

Solve for R. K=ar/p Answer choices: R=ka/p R=kap R=kp/a R=a/kp

Dafna11 [192]

Multiply each side by p, so
kp = ar
Divide each side by a, so
kp/a = r
The answer is the third option

3 0

4 years ago

Read 2 more answers

What is 16/75 as a percent. round you anwser to the nearest 10

Viktor [21]

It would be A. 21.3%

7 0

3 years ago

The sum of two numbers is 31 and their difference is 7

Diano4ka-milaya [45]

Answer:

24 and 7

Step-by-step explanation:

If you take 31-7=24, so 24+7=31 and 31-24=7

7 0

3 years ago

In two or more complete sentences, explain how to use ordered pairs of points in f(x) = 3x - 5 and g(x) = (5 + x)/3 to determine

dybincka [34]

For any point (x, y), that appears in one function, the point (y, x) must appear in the other function.
For any point (x, y), that DOESN'T appear in one function, the point (y, x) must NOT appear in the other function.
So if you find any point that DOESN'T meet the above rules, you can prove that the functions are NOT inverses of each other.

But if you want to prove that they ARE inverses of each other, you have to check ALL points in the functions, and there are infinity of them, so that's not practical. Instead, you can write f(x) like this:
y = 3x - 5
Now solve for x:
y + 5 = 3x
x = (y + 5) / 3
Now swap x and y:
y = (x + 5) / 3
This is the same as g(x). Therefore the functions are inverses of each other.

6 0

3 years ago