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3 years ago

Please help me thanks

Mathematics

2 answers:

Alexandra [31]3 years ago

5 0

Answer:

Step-by-step explanation:

Reptile [31]3 years ago

5 0

The right answer is A

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Irina-Kira [14]

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Step-by-step explanation:

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3 years ago

Whats -606-(-778+20)+2n?

kozerog [31]

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7 0

3 years ago

What is the percent change from 20 to 35

sertanlavr [38]

So in this case the working would be 35-20= 15
Now we put in the formula. (15/20)*100 which gives us 75. 75% is your percentage change

3 0

3 years ago

Read 2 more answers

From a sample of 37 graduate students, the mean number of months of work experience prior to entering an MBA program was 35.15.

kiruha [24]

Answer: (29.35, 40.95)

Step-by-step explanation:

Formula to find the confidence interval for population mean :-

$\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}$

, where $\overline{x}$ = sample mean.

z*= critical z-value

n= sample size.

$\sigma$ = Population standard deviation.

As per given , we have

$\overline{x}=35.15$

$\sigma=18$

n= 37

Using z-table, the critical z-value for 95% confidence = z* = 1.96

Then, the confidence interval for the population mean will be :

$35.15\pm (1.96)\dfrac{18}{\sqrt{37}}$

$=35.15\pm (1.96)\dfrac{1.7}{6.08276}$

$=35.15\pm (1.96)(2.95918)$

$\approx35.15\pm5.80$

$=(35.15-5.80,\ 35.15+5.80)=(29.35,\ 40.95)$

Hence, a 95% confidence interval for the population mean = (29.35, 40.95)

8 0

3 years ago

find the sum of the interior angles of the following polygons.1)Pentagon. 2)hexagon. 3)heptagon. 4)octagon.

sergejj [24]

Answer:

Sum of interior angles of polygon = (n-2)*180

1) Pentagon:

(5-2)*180= 540

2)Hexagon:

(6-2)*180= 720

3) Heptagon:

(7-2)*180= 900

4) Octagon:

(8-2)*180= 1080

3 0

3 years ago