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guajiro [1.7K]
3 years ago
9

于 8) (11+ 3) + (14 +84) = (11+3) + 14+8\4=

Mathematics
1 answer:
bulgar [2K]3 years ago
7 0

Answer:

what year are you?

Step-by-step explanation:

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Assume the question has a solution for z .. <br> solve for z<br> z = ____
saveliy_v [14]

Answer:

z=-(51p+84)/(d+p)

Step-by-step explanation:

-p*(51+z)=dz+84

-51p-pz=dz+84

-51p-84=dz+pz

z=-(51p+84)/(d+p)

6 0
3 years ago
Carla is arranging square patches of grass on her rectangular lawn her lawn is 10 yards wide and 3 and 1/2 yards long how many s
mezya [45]

Answer:

I don't know if this is correct but wouldn't it be 560?

Step-by-step explanation:

If you have 10 on one side, you divide 10 by 1/4 to get 40. So you need 40 blocks to fill one side, and 3 1/2 on the other only needs 14. 14*40=560.

5 0
3 years ago
PLEASE HELPP ** attachmeents provided
gladu [14]

Answer:

the answer is A

Step-by-step explanation:

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6 0
2 years ago
Read 2 more answers
Evaluate: 1/3(-15 + 3/2)
trasher [3.6K]

Answer:

-4.5 is correct answer

Step-by-step explanation:

\frac{1}{3} ( - 15 +  \frac{3}{2} ) \\  =  \frac{1}{3} (  \frac{ - 30 + 3}{2} ) \\ =   \frac{1}{3} (  \frac{ - 27}{2} ) \\     = \frac{ - 9}{2}

hope it helped you:)

7 0
3 years ago
A survey of Massachusetts high school students showed that the mean number of hours these students reported watching crime TV sh
masha68 [24]

Answer:

a) Z = -0.5

b) Z = 1.5

c) 93.32% of students watch less than 3.6 hours of shows a week

d) 62.57% of the sample watches between 2 hours and 3.6 hours of crime shows a week

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 = 2.4, \sigma = 0.8

a. Find the z-score for a student who reported watching 2 hours of crime shows a week.

This is Z when X = 2. So

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

Z = \frac{2 - 2.4}{0.8}

Z = -0.5

b. Find the z-score for a student who reported watching 3.6 hours of crime shows a week

X = 3.6. So

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

Z = \frac{3.6 - 2.4}{0.8}

Z = 1.5

c. What percentage of students watch less than 3.6 hours of shows a week?

pvalue of Z when X = 3.6.

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

Z = \frac{3.6 - 2.4}{0.8}

Z = 1.5

Z = 1.5 has a pvalue of 0.9332

93.32% of students watch less than 3.6 hours of shows a week

d. What percentage of the sample watches between 2 hours and 3.6 hours of crime shows a week?

pvalue of Z when X = 3.6 subtracted by the pvalue of Z when X = 2.

X = 3.6

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

Z = \frac{3.6 - 2.4}{0.8}

Z = 1.5

Z = 1.5 has a pvalue of 0.9332

X = 2

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

Z = \frac{2 - 2.4}{0.8}

Z = -0.5

Z = -0.5 has a pvalue of 0.3075

0.9332 - 0.3075 = 0.6257

62.57% of the sample watches between 2 hours and 3.6 hours of crime shows a week

7 0
3 years ago
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