2 years ago

Need help!! Please!! Offering 20 points!

Mathematics

2 answers:

pshichka [43]2 years ago

6 0

Answer:i

Step-by-step explanation:

vivado [14]2 years ago

6 0

I think it’s A. 18
I’m sorry if it’s wrong

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bezimeni [28]

Answer:

1. x=2

2. x=5

3.x=10

Step-by-step explanation:

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2 years ago

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3 years ago

Frank's paper airplane glided 78.9 m. Sarah's plane glided 85 m. How many more centimeters did Sarah's plane glide? 1 m= 100 cm

Olegator [25]

Answer:

610 cm

Step-by-step explanation:

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2 years ago

If twice a number, n, is 5 less than the number squared, which of the following equations could be used to properly solve for n?

hjlf

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3 years ago

A survey of

Zina [86]

Answer:

0.0208<p<0.0592

Step-by-step explanation:

-Given the sample size is 400 and the desired proportion is 16.

-The confidence interval can be determined as follows:

$CI=\hat p\pm z\sqrt{\frac{\hat p(1-\hat p}{n}}\\\\\hat p=x/n=16/400=0.04$

#We the use this proportion to find the CI at 95%:

$CI=0.04\pm 1.96\times \sqrt{\frac{0.04(1-0.04)}{400}}\\\\=0.04\pm 0.0192\\\\=[0.0208,0.0592]$

Hence, the 95% confidence interval is 0.0208<p<0.0592

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3 years ago