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Phantasy [73]
3 years ago
15

What is A decreased by 20% and then increased by 20% of that? Please show your work.

Mathematics
1 answer:
umka21 [38]3 years ago
8 0

Answer: \\ A - 20\%A = A - 0.2A = 0.8A \\ 0.8A + 20\%0.8A = 0.8A + 0.2 \times 0.8A = 0.8 + 0.16A = 0.96A

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Soybean meal is 14% protein; cornmeal is 7% protein. How many pounds of each should be mixed together in order to get 280lb mixt
TiliK225 [7]
0.14x + 0.07(280-x) = 0.08*280

0.14x + 19.6-0.07x = 22.4

0.07x + 19.6 = 22.4

0.07x = 2.8
x = 2.8 / 0.07 = 40
 x = 40 pounds of Soybean
280 -40 = 240 of cornmeal



7 0
3 years ago
Mean Mode Median<br><br>12, 10 ,10, 13, 18, 9
Fiesta28 [93]

Mean: To find the mean you add all the numbers up and divide by the total number of factors.

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Mode: To find the mode, we need to find the number that reoccurs the most in the sequence.

In this case it is 10 because it occurs twice, while the other factors occur once!

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In this case, we get left with 10 and 12. Meaning that our median is 11!

8 0
4 years ago
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3 years ago
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8 0
3 years ago
An observational study found that the amount of sleep an employee gets each night is associated with job performance. The correl
blagie [28]

Answer:

The correct option is D.) Causation cannot be determined from an observational study.

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