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Alenkasestr [34]
2 years ago
5

Simplify the following expression as a monomial: -8a8 ———- -2a7

Mathematics
1 answer:
Likurg_2 [28]2 years ago
8 0

Answer:

4a

Step-by-step explanation:

-8 / -2 = 4

a^8/a^7 = a^(8 - 7) = a

Answer: 4a

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Answer:

1890, total cost of lights per week

Step-by-step explanation:

The lights cost 45 dollars per bulb and 6 go out per day, 45×6=270

270 is the cost to replace the bulbs of one day.

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6 0
3 years ago
A study is conducted to determine whether a new cancer drug increases the mean survival time by at least 30 days for a certain t
anygoal [31]

Answer:

H0: The new cancer drug increases the mean survival time by 30 days

Ha: The new cancer drug increases the mean survival time by 30 or more than 30 days.

If fail to reject H0 (the null hypothesis), the conclusion is that the new cancer drug increases the mean survival time by 30 days.

Step-by-step explanation:

The null hypothesis is a statement from a population parameter which is either rejected or accepted (fail to reject) upon testing. It is expressed using the equality sign.

The alternate hypothesis is also a statement from a population parameter which negates the null hypothesis and is accepted if the null hypothesis is rejected. It is expressed using any of the inequality signs.

The test is a two-tailed test because the alternate hypothesis is expressed using more than or equal to.

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It would therefore be concluded that the new cancer drug increases the mean survival time by 30 days.

8 0
3 years ago
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Answer:

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Step-by-step explanation:

7 0
3 years ago
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Answer:

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Step-by-step explanation:

the formula to find the area of a square is:

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the formula to find the perimeter of a square is:

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hope that helps

7 0
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Read 2 more answers
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Answer:

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3 years ago
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