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Stells [14]
3 years ago
15

1) What is the solution of the inequality? 42-8 - 22-24

Mathematics
1 answer:
ki77a [65]3 years ago
7 0

Answer:

38

Step-by-step explanation

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Kevin will take 4 math tests this term. All of the tests are worth the same number of points. After taking the first 3 tests, hi
Makovka662 [10]

Answer:

Kevin needs 96 points on his last test to raise his mean test score to 90 points.

Step-by-step explanation:

we know that

The mean score is the total of all scores divided by the total number of tests.

Let

x_1 ----> the score in the first math test

x_2 ----> the score in the second math test

x_3 ----> the score in the third math test

x_4 ----> the score in the fourth math test

we have

After taking the first 3 tests, his mean test score is 88 points

so

\frac{x_1+x_2+x_3}{3} =88

x_1+x_2+x_3=264 ----> equation A

How many points does he need on his last test to raise his mean test score to 90 points?

so

\frac{x_1+x_2+x_3+x_4}{4} =90

x_1+x_2+x_3+x_4=360 ----> equation B

substitute equation A in equation B

264 + x_4 = 360

solve for x_4

x_4 = 360-264

x_4 = 96

Therefore

Kevin needs 96 points on his last test to raise his mean test score to 90 points.

4 0
3 years ago
Fwe points whats x? x+21=99??<br> injoy <br> anyone wan cht
umka21 [38]

Answer:

The answer is 78

Step-by-step explanation:

99-78=21

5 0
3 years ago
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Please answer this question, I am timed. Thank you! :)
frutty [35]
The perimeter of the rectangle is 16
4 0
2 years ago
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Graph the function in the image.
il63 [147K]

Answer:

Here is the graph to the intercepts.

Step-by-step explanation:

Graph of (6, 4), (4, 3), (-2, 0)

Hope it helps :)

8 0
3 years ago
Rainfall in miami was measured during the month of june and is displayed in the following dot plot
Oksi-84 [34.3K]

Answer:

part A: Mean:6.42 Median:7

Part b: median

Part c: no it’s skewed left and unimodal

Step-by-step explanation:

3 0
3 years ago
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