3 years ago

(-9ab+8a-3) - (-7ab+1)

1 answer:

NemiM [27]3 years ago

6 0

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antoniya [11.8K]

The answer should be A.

7 0

3 years ago

FinnZ [79.3K]

Answer:

(19229.11 ,20770.89)

Step-by-step explanation:

We are given the following information:

Sample size, n = 17

Sample mean = 20,000 pounds

Sample standard deviation = 1,500 pounds

Confidence level = 95%

Significance level = 5% = 0.05

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 16 and}~\alpha_{0.05} = \pm 2.119$

$20000 \pm 2.119(\displaystyle\frac{1500}{\sqrt{17}} ) = 20000 \pm 770.89 = (19229.11 ,20770.89)$

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3 years ago

weeeeeb [17]

Answer: 2,3, and the last one.... I think

Step-by-step explanation:

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2 years ago

ikadub [295]

I hope this helps you

12x/2+24/2

6x+12

-6 ( -x-2)

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2 years ago

icang [17]

52.2 i think please hit the thanks button

5 0

3 years ago