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vovangra [49]
2 years ago
9

HELP ME 2 PICTURES BTW 50 POINTS

Mathematics
1 answer:
mr Goodwill [35]2 years ago
4 0

Answer:

7 and 9 are alternate interior angles

Step-by-step explanation:

4 and 11 are corresponding angles

1 and 7 are vertical angles

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The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 330 grams and a standard deviati
just olya [345]

Answer:

Weights of at least 340.1 are in the highest 20%.

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 = 330, \sigma = 12

a. Highest 20 percent

At least X

100-20 = 80

So X is the 80th percentile, which is X when Z has a pvalue of 0.8. So X when Z = 0.842.

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

0.842 = \frac{X - 330}{12}

X - 330 = 12*0.842

X = 340.1

Weights of at least 340.1 are in the highest 20%.

3 0
3 years ago
There are 15 boys and 16 girls in a class room. Write the following ratio: boys to girls
aalyn [17]

Answer:

93.75% i hope that helps

Step-by-step explanation:

7 0
2 years ago
Jade's car can go 27.6 miles per gallon of gas. How many miles can she drive with 7 gallons of gas?
Readme [11.4K]

Answer:

193.2

Step-by-step explanation:

27.6x7 27.7\\ x   7\\--------\\     19.39

5 0
3 years ago
Meauring the speed of a car at 60 mph would be an example of quantitative data.<br> True<br> False
Kobotan [32]

Answer:

True

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
12 less than 7 times a number x
erma4kov [3.2K]
The answer is 5x because when you do the math 12 subtracted by 7 equals 5 then you add the x at the end.
8 0
3 years ago
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