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Mrrafil [7]
3 years ago
13

Help! Not sure. I have to add more characters to ask this question... welp.

Mathematics
2 answers:
Vilka [71]3 years ago
5 0

Answer:

<em>The Answer Is C</em>

Step-by-step explanation:

timurjin [86]3 years ago
3 0
Answer: C

Step by step explanation:
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PLS HELP ME, PLS THIS IS DUE FIRST CORRECT ANSWER GETS BRAINLIEST​
UkoKoshka [18]

Answer:

I think 87.2% is the correct answer.

I think it will help you

6 0
2 years ago
A bike path is 12.5 miles. Dominic is 70% of the way to the end. How far is Dominic on the​ path?
stepan [7]

Answer:

8.75 miles is 70%

Step-by-step explanation:

12.5

1.25 is 10 percent

multiply that by 7

8.75 miles

3 0
2 years ago
What is 8c + c = , is it 8cc, 9c, 8c2, 8c
Mnenie [13.5K]

Answer:

9c

Step-by-step explanation:

if you take 8c and add another c, it equals 9c

8 0
2 years ago
Given f (x) = 6 (1- x), what is the value of f (-5)?
natta225 [31]

Answer: 36

Step-by-step explanation:

1) substitute x for 6

get f(-5)=6(1--5)= 6+30=46

5 0
3 years ago
Read 2 more answers
Assume that the empirical rule is a good model for the time it takes for all passengers to board an airplane. The mean time is 4
slamgirl [31]

Answer:

The interval that describes how long it takes for passengers to board the middle 95% of the time is between 40.16 minutes and 55.84 minutes.

Step-by-step explanation:

Problems of normally distributed samples can be 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 = 48, \sigma = 4.

Which interval describes how long it takes for passengers to board the middle 95% of the time?

This is between the 2.5th percentile and the 97.5th percentile.

So this interval is the value of X when Z has a a pvalue of 0.025 and the value of X when Z has a pvalue of 0.975

Lower Limit

Z has a pvalue of 0.025 when Z = -1.96. So

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

-1.96 = \frac{X - 48}{4}

X - 48 = -1.96*4

X = 40.16

Upper Limit

Z has a pvalue of 0.975 when Z = 1.96. So

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

1.96 = \frac{X - 48}{4}

X - 48 = 1.96*4

X = 55.84

The interval that describes how long it takes for passengers to board the middle 95% of the time is between 40.16 minutes and 55.84 minutes.

7 0
3 years ago
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