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3 years ago

Use estimation to check the answer to this story problem.

Mathematics

2 answers:

aniked [119]3 years ago

4 0

C.The answer should be about 8,000 yards. The student's answer is not correct. because 765*11=8415

Lelechka [254]3 years ago

3 0

Here, the answer would be: 765 * 11 = 8415 [ About 8 thousands ]

In short, Your Answer would be Option C) The answer should be about 8,000 yards. The student's answer is not correct.

Hope this helps!

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Johns grade on his math test was 94 his grade on the second test was 85 what is the percent change in his grade to the nearest p

Olenka [21]

Answer:

req percentage change=9.5744%

Step-by-step explanation:

change=94-85=9

%change= $\frac{9\times100}{85}$

%change = $\frac{900}{85}$

%change =9.5744%

4 0

2 years ago

5.346 - 2.289= 3.057 SHOW WORK!!!! WILL GIVE BRAINLIEST PLEASE

Ilya [14]

brainly.com/question/13983892

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2 years ago

What was the price yesterday?

Verdich [7]

407(1+0.26)

=407*1.26

=512.82

6 0

2 years ago

The exam scores for 200 students are normally distributed with a mean of 72 and a standard deviation of 10. Which answer choice

Paha777 [63]

Using the normal distribution, it is found that there are 68 students with scores between 72 and 82.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean $\mu$ and standard deviation $\sigma$ is given by:

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

The z-score measures how many standard deviations the measure is above or below the mean.

Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

In this problem, the mean and the standard deviation are given, respectively, by:

$\mu = 72, \sigma = 10$

The proportion of students with scores between 72 and 82 is the p-value of Z when X = 82 subtracted by the p-value of Z when X = 72.

X = 82:

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

$Z = \frac{82 - 72}{10}$

Z = 1

Z = 1 has a p-value of 0.84.

X = 72:

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

$Z = \frac{72 - 72}{10}$

Z = 0

Z = 0 has a p-value of 0.5.

0.84 - 0.5 = 0.34.

Out of 200 students, the number is given by:

0.34 x 200 = 68 students with scores between 72 and 82.

More can be learned about the normal distribution at brainly.com/question/24663213

#SPJ1

6 0

2 years ago

K(t) = 13t – 2 k(3) =

Maru [420]

Since t=3

What do have to do is just set it for 3.

13(3) -2

k(3) = 37

4 0

3 years ago