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Olenka [21]
3 years ago
9

Solve for x in the equation x² + 2x +1 = 17

Mathematics
1 answer:
SashulF [63]3 years ago
7 0

x=3.18,x=-5.18
It have two answers

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A poll was conducted by a home mortgage company regarding home ownership in the United States. The company polled 1,488 American
____ [38]

If the sample size is 1488 and confidence interval of 99% then the margin of error is 0.03088.

Given sample size of 1488, percentage of those polled own a home be 69% and confidence level be 99%.

We are required to find the approximate margin of error.

Margin of error is the difference between calculated values and real values.

n=1488

p=0.69

Margin of error=z*\sqrt{p(1-p)/n}

Z score when confidence level is 99%=2.576.

Margin of error=2.576*\sqrt{0.69(1-0.69)/1488}

=2.576*\sqrt{(0.69*0.31)/1488}

=2.576*\sqrt{0.2139/1488}

=2.576*\sqrt{0.0001437}

=2.576*0.01198

=0.03088

Hence if the sample size is 1488 and confidence interval of 99% then the margin of error is 0.03088.

Learn more about margin of error at brainly.com/question/10218601

#SPJ1

3 0
2 years ago
How can I calculate if a given decimal is rational or irrational. please help I forgot.
dalvyx [7]
Well, a rational decimal is like a simple 3.1 or 4.5. It just cuts off easily. Another example would be a repeating decimal like 3.333333...


An irrational decimal is like 3.1415682983523576294875 with no pattern or cutoff point.


Sorry if I am wrong.
4 0
3 years ago
What percent of 45 is 18
alexira [117]
4% of 45 equals 18.
3 0
3 years ago
Read 2 more answers
I need some help with this​
Contact [7]
The answer for the first one is city c
8 0
3 years ago
decide if the following change is an increase or decrease. then determine the percent of change. 48 inches to 30 inches
Wewaii [24]
48 inches to 30 inches is a decrease.
percent decrease = change/original value x 100%
= (48 - 30)/48 x 100%
= 18/48 x 100%
= 37.5% decrease
3 0
3 years ago
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