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Aleonysh [2.5K]
3 years ago
13

I need help ASAP please please

Mathematics
1 answer:
Natali [406]3 years ago
8 0

Answer:

\frac{x}{2} - 14

Step-by-step explanation:

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I need help on this test. Will give Brainliest to whoever answers first! Pt. 8
adelina 88 [10]
A and H:) hope this helps
4 0
3 years ago
Read 2 more answers
The average full-time faculty member in a college works an average of 53 hours per week. a) If we assume the standard deviation
arsen [322]

Answer:

2.28% of faculty members work more than 58.6 hours a week.

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.

The average full-time faculty member in a college works an average of 53 hours per week. Standard deviation of 2.8 hours.

This means that \mu = 53, \sigma = 2.8

What percentage of faculty members work more than 58.6 hours a week?

The proportion is 1 subtracted by the p-value of Z when X = 58.6. So

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

Z = \frac{58.6 - 53}{2.8}

Z = 2

Z = 2 has a p-value of 0.9772

1 - 0.9772 = 0.0228

0.0228*100% = 2.28%

2.28% of faculty members work more than 58.6 hours a week.

6 0
3 years ago
The school's math team has 14 new members this year, which makes a total of 34. The number of new members represents what percen
Andreas93 [3]

Answer: 41%

Step-by-step explanation:

Youe need to find the perecent of 14 out of 34

We know that 34 represents the whole so its 100%

Now we just multiply 100 times 14 which is 1,400

and now we divide it by our whole which is 34

you will get 41.1764

Just round it and you are done

5 0
3 years ago
One hose can fill a goldfish pond in 24 ​minutes, and two hoses can fill the same pond in 15 minutes. find how long it takes the
Arisa [49]
2 hoses together:
15 mins = 1 pond
1 min = 1/15 pond

1st hose:
24 mins = 1 pond 
1 min = 1/24 pond

2nd hose:
1 min = 1/15 - 1/24 = 1/40 pond

So 1/40 of the pond = 1 min
   40/40 of the pond = 1 x 40 mins
          1 whole pond =  40 mins

---------------------------------------------------------------------------------------------------
Answer: it will take 40 mins for the 2nd hose to fill up the pond alone.
---------------------------------------------------------------------------------------------------
5 0
3 years ago
The mean radius of earth is 6,371.0 kilometers and the mean radius of earths moon is 1,737.5 kilometers. What is the approximate
Dominik [7]
6,371.0- 1,737.5 = <span>4,633.5 kilometres.
the approximate difference is 4,633.5 kilometres</span>
4 0
3 years ago
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