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Ugo [173]
3 years ago
10

Can someone help me with this ​

Mathematics
1 answer:
xeze [42]3 years ago
3 0

Answer

So if you want to get the area of a parallelogram you should do length x width

So 3.7 x 12.5= 46.25

I’m sorry if this is a wrong answer but this is what the teacher told us

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48. Reading Rates The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words per minute a
son4ous [18]

Answer:

The reading speed of a sixth-grader whose reading speed is at the 90th percentile is 155.72 words per minute.

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 = 125, \sigma = 24

What is the reading speed of a sixth-grader whose reading speed is at the 90th percentile

This is the value of X when Z has a pvalue of 0.9. So it is X when Z = 1.28.

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

1.28 = \frac{X - 125}{24}

X - 125 = 1.28*24

X = 155.72

The reading speed of a sixth-grader whose reading speed is at the 90th percentile is 155.72 words per minute.

4 0
3 years ago
Read 2 more answers
Help!!! Please!!! I’ll mark you brainliest first person to answer!!! :)
katovenus [111]
I think it would be 9, but the graph seems a bit unclear so I’m really sorry if that doesn’t help..
7 0
3 years ago
PLEASE HELP QUESTION IS WORTH 16 POINTS I WILL GET AN F IF INCORRECT
Alborosie

Answer:

D)

24

Step-by-step explanation:

5 0
3 years ago
Help me for 1000 points
pychu [463]

Answer:

20 pounds

Step-by-step explanation:

2.5 times 8 would be 20 pounds

4 0
3 years ago
Read 2 more answers
Help with geometry please
TEA [102]

Answer:

state the similarities such as its width and height

4 0
2 years ago
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