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3 years ago

Find the common difference of the arithmetic sequence 13, 18, 23, ...

Mathematics

2 answers:

irina1246 [14]3 years ago

5 0

Answer:

Step-by-step explanation:

To find the common difference you just find the difference between each number. 18-13=5, 23-18=5, etc.

julia-pushkina [17]3 years ago

5 0

Answer: awnswer mine for 53 points

Step-by-step explanation:

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Could I also get help on this, I’m giving 15 points, plz by tonight

Alchen [17]

2.) A. 32 cm
3.) D. 6.4
4.) B.) 7
5.) 22.75
6.) 3

I’ll show u a picture of how I solved everything. Ask any questions if needed.

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3 years ago

According to a "how to stop bullying" Web site, 15% of students report experiencing bullying one to three times within the most

AlekseyPX

Answer:

His 95% confidence interval is (0.065, 0.155).

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 $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$n = 186, \pi = 0.11$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.11 - 1.96\sqrt{\frac{0.11*0.89}{186}} = 0.065$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.11 + 1.96\sqrt{\frac{0.11*0.89}{186}} = 0.155$

His 95% confidence interval is (0.065, 0.155).

4 0

3 years ago

Which of these points are on a line that has a slope of -3?

Ira Lisetskai [31]

Simple....

using the formula $\frac{ y_{1}- y_{2} }{ x_{1}- x_{2} }$ to find slope....

1.) (9,2)(4,3)

$\frac{2-3}{9-4}= -\frac{1}{5}$ (No)

2.) (9,2)(3,4)

$\frac{2-4}{9-3} = -\frac{2}{6} =- \frac{1}{3}$ (No)

3.) (2,9)(3,4)

$\frac{9-4}{2-3} = \frac{5}{-1} =-5$ (No)

4.) (2,9)(4,3)

$\frac{9-3}{2-4} = \frac{6}{-2} =-3$ (YES!)

Thus, your answer.

3 0

3 years ago

Over a 24-hour period, the temperature in a town can be modeled by one period of a sinusoidal function. The temperature measures

oksano4ka [1.4K]

What was the answer?

7 0

3 years ago

Read 2 more answers

We are in school 9 months out of the year. What percent of the year are we in<br> school?

Igoryamba

There are 12 months in a year.

Divide 9 by 12 then multiply by 100 to get the percentage.

9/12 = 0.75 x 100 = 75%

Answer: 75%

6 0

2 years ago