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N76 [4]
2 years ago
5

Angle 2 is 60. Find angle 8. Options: 140 100 40 60

Mathematics
1 answer:
pav-90 [236]2 years ago
5 0
Angle 8 is 60 too
eee
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What is the answer please help
matrenka [14]

Answer:

7

Step-by-step explanation:

7 shows up twice

all other numbers show up only once.

6 0
3 years ago
Help me plz thanksss
natulia [17]

Answer:

0.5j+19

Step-by-step explanation:

6 0
2 years ago
The time for a professor to grade an exam is normally distributed with a mean of 16.3 minutes and a standard deviation of 4.2 mi
dem82 [27]

Answer:

62.17% probability that a randomly selected exam will require more than 15 minutes to grade

Step-by-step explanation:

Problems of normally distributed samples are 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 = 16.3, \sigma = 4.2

What is the probability that a randomly selected exam will require more than 15 minutes to grade

This is 1 subtracted by the pvalue of Z when X = 15. So

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

Z = \frac{15 - 16.3}{4.2}

Z = -0.31

Z = -0.31 has a pvalue of 0.3783.

1 - 0.3783 = 0.6217

62.17% probability that a randomly selected exam will require more than 15 minutes to grade

8 0
3 years ago
Tyson is 6 feet 2 inches tall. There are 2.54 centimeters in 1 inch. What is Tyson's height in centimeters?Tyson is 6 feet 2 inc
Ivanshal [37]
First you need to find how many inches is in 6.2 feet which is 74. Then you need to multiply that by 2.54 to get the amount of centimeters. Which is 182.88. So the answer is 182.88
7 0
2 years ago
Read 2 more answers
(t9)-8 what is the simplify expression
musickatia [10]
The answer would be -72t because all you would have to do is multiply the expression
7 0
3 years ago
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