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Murljashka [212]
3 years ago
8

Help please me ! 10 pts and

Mathematics
2 answers:
andre [41]3 years ago
6 0
The answer is -6
So you need to drop the word sum on -6
Drupady [299]3 years ago
5 0
The answer is -6 i believe sorry if i might be wrong 
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While he hikes in the Gold Country of northern California, Sid dreams about the adventurers that walked the same trails years ag
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Jackie created a horizontal cross section on a cylinder (soda can). What shape did she discover after making the cut?
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3 years ago
The travel time on a section of a Long Island Expressway (LIE) is normally distributed with a mean of 80 seconds and a standard
user100 [1]

Answer:

The travel time that separates the top 2.5% of the travel times from the rest is of 91.76 seconds.

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 of 80 seconds and a standard deviation of 6 seconds.

This means that \mu = 80, \sigma = 6

What travel time separates the top 2.5% of the travel times from the rest?

This is the 100 - 2.5 = 97.5th percentile, which is X when Z has a p-value of 0.975, so X when Z = 1.96.

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

1.96 = \frac{X - 80}{6}

X - 80 = 6*1.96

X = 91.76

The travel time that separates the top 2.5% of the travel times from the rest is of 91.76 seconds.

3 0
2 years ago
Pls help with this one I give brainliest thank you! Number 7
Leona [35]

Answer:

length x width x height = volume

5.5 x 2 = 11 x 3 = 33

33 ft.

hope this helps

if you have any questions you can ask!

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the Square root of -100
lidiya [134]

Answer:

10i

Step-by-step explanation:

√(-100)

Use the imaginary number rule  i=\sqrt{-1}

√(-1) × √(100)

i × √(10²)

i × 10

= 10i

6 0
3 years ago
Read 2 more answers
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