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Serggg [28]
2 years ago
13

5. Elijah eats of a grapefruit every morning for breakfast. Which fraction shows how many grapefruits he will eat in 7 days? SOM

EONE HELP PLS ITS A TEST!

Mathematics
1 answer:
dezoksy [38]2 years ago
3 0

Answer:

7/2

Step-by-step explanation:

he will have eaten 3.5 grapefruits in 7 days

7/2= 3.5

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Jane runs 6 miles in 44 minutes. At the same rate, how many minutes would she take to run 9 miles?
polet [3.4K]

Answer:

66 minutes

Step-by-step explanation:

<u>Solve for speed</u>

speed = distance / time

speed = 6 / 44

<u>Substitute in speed to second equation and solve for time</u>

distance / speed = time

9 / (6/44) = time

66 = time taken

8 0
3 years ago
Calculating percentages. no links
Alenkasestr [34]

Answer:

35%

Step-by-step explanation:

Its 7/20 so 0.35 and then times 100

4 0
3 years ago
Read 2 more answers
Professor Halen teaches a College Mathematics class. The scores on the midterm exam are normally distributed with a mean of 72.3
lbvjy [14]

Answer:

14.63% probability that a student scores between 82 and 90

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 = 72.3, \sigma = 8.9

What is the probability that a student scores between 82 and 90?

This is the pvalue of Z when X = 90 subtracted by the pvalue of Z when X = 82. So

X = 90

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

Z = \frac{90 - 73.9}{8.9}

Z = 1.81

Z = 1.81 has a pvalue of 0.9649

X = 82

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

Z = \frac{82 - 73.9}{8.9}

Z = 0.91

Z = 0.91 has a pvalue of 0.8186

0.9649 - 0.8186 = 0.1463

14.63% probability that a student scores between 82 and 90

3 0
3 years ago
ANSWER PLZ!!! NEED HELP! <br> 57,632 x 233
Fantom [35]

Answer: The answer is: 13,428,256. Hope this helps!!


Step-by-step explanation:


3 0
3 years ago
Read 2 more answers
Does 2x+4=3x+1/2 have one solution or more or none?
Contact [7]

Answer:

one solution the solution being ×=7/2

Step-by-step explanation:

one solution

3 0
3 years ago
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