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1 year ago

What does the " commutative property" help us solve this equation: 6 + p = - 3 HELPPPP MEEEE

Mathematics

2 answers:

lapo4ka [179]1 year ago

6 0

P = - 9

The 6 turns into - 6. Take - 3 and subtract it by - 6 and you will get - 9 as your answer.

aliina [53]1 year ago

4 0

change the 6 ito - 6 by turning to left side then you will have -3 -6 now you can add them (- + -) is + so you can add them the sign of 6 is greater so the answer is -9

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The length of a rectangle is 4 meters longer than the width. if the area is 21 square meters, find the rectangle's dimensions.

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The length of a rectangle is 4 meters longer than the width. if the area is 21 square meters, find the rectangle's dimensions. round to the nearest tenth of a meter.

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2 years ago

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NemiM [27]

Answer:

The 99% confidence interval is between 62.36%(lower bound) and 89.64%(upper bound).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

A sample of 65 students from the freshmen class is used and a mean score of 76% correct is obtained.

This means that $n = 65, \pi = 0.76$

99% confidence level

So $\alpha = 0.005$ , z is the value of Z that has a pvalue of $1 - \frac{0.005}{2} = 0.995$ , so $Z = 2.575$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.76 - 2.575\sqrt{\frac{0.76*0.24}{65}} = 0.6236$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.76 + 2.575\sqrt{\frac{0.76*0.24}{65}} = 0.8964$

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0.8964*100 = 89.64%

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Answer:

Option B) census

Step-by-step explanation:

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The measure of central tendency for a data is given by

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Median
Mode

It help us to identify the central position of data in different ways.

Thus, out of the given option census is not a measure of center.

Option B) census

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