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Mumz [18]
3 years ago
13

Please help me! i need help

Mathematics
1 answer:
Andrej [43]3 years ago
7 0

Answer:

20%

Step-by-step explanation:

400/2000=0.2

0.2*100=20

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Help!!
lutik1710 [3]

theoretical probability is a coin will land on heads 50% of the time

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3 years ago
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Factor completely.
tatyana61 [14]

Answer:

A.) (7t³ + 2k^4)(7t³ - 2k^4)

Step-by-step explanation:

Factor the following:

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Factor the difference of two squares. (7 t^3)^2 - (2 k^4)^2 = (7 t^3 - 2 k^4) (7 t^3 + 2 k^4):

Answer:  (7 t^3 - 2 k^4) (7 t^3 + 2 k^4)

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3 years ago
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NARA [144]

Answer:

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Step-by-step explanation:

7 0
3 years ago
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The correlation coefficient r between an employee’s age, x, and yearly salary, y, is 0.633. What percent of the variation in yea
son4ous [18]

Answer:

The answer is 40.1%

Step-by-step explanation:

I just took the test

6 0
3 years ago
I need help with question 20
luda_lava [24]
20 because 10+10=20 and 20+20=40 and 20+40=60
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