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makkiz [27]
3 years ago
14

-5,15,-45,135 common ratio

Mathematics
1 answer:
S_A_V [24]3 years ago
7 0

Answer:

5 is the common ratio for your numbers

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It is known that the population variance equals 484. With a .95 probability, the sample size that needs to be taken to estimate
Hitman42 [59]

Answer:

The minimum sample size is n = 75 so that the desired margin of error is 5 or less.                          

Step-by-step explanation:

We are given the following in the question:

Population variance = 484

Standard deviation =

\sigma^2 = 484\\\sigma =\sqrt{484} = 22

Confidence level = 0.95

Significance level = 0.05

Margin of error = 5

Formula:

Margin of error =

E = z\times \dfrac{\sigma}{\sqrt{n}}\\\\n = (\dfrac{z\times \sigma}{E})^2

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

Putting values, we get

E\leq 5\\\\1.96\times \dfrac{22}{\sqrt{n}} \leq 5\\\\\sqrt{n} \geq 1.96\times \dfrac{22}{5}\\\\n \geq (1.96\times \dfrac{22}{5})^2\\\\n \geq 74.373

Thus, the minimum sample size is n = 75 so that the desired margin of error is 5 or less.

3 0
2 years ago
Find mFE<br> A) 52°<br> C) 76°<br> B) 93°<br> D) 112°
mixer [17]

Answer:

76 degrees

Step-by-step explanation:

GE = 180 since it is a straight line

GE = GR + FE

180 = 7x+6 +6x-8

Combine like terms

180 = 13x-2

Add 2 to each side

182 = 13x

Divide by 13

182/13 = 13x/13

14 =x

We want FE

FE = 6x-8

FE = 6(14) -8

    =84 -8

    =76

3 0
2 years ago
Ms. Robinson gave her class 12 minutes to read. Carrie read 5 1/2 pages in that time. At what rate, in pages per hour, did Carri
cricket20 [7]
The answer is:  " 27.5 pages " ; or, write as:  " 27 \frac{1}{2} pages " .
____________________________________________________________

5.5 pages / 12 minute = ? pages / 60 minutes; 


12 * 5 = 60 ;

5.5 * 5 = ? 


5.5 * 5 =   27.5
____________________________________________________________
The answer is:  " 27.5 pages " ; or, write as:  " 27 \frac{1}{2} pages " .
____________________________________________________________
4 0
2 years ago
What is the value of T?
Cerrena [4.2K]

Answer:

The value of T is 55°

Step-by-step explanation:

Using the theorem of parallel and equality,the angle of unknown angle equals to opposite one.

Or at least if you noticed,that angle is perpendicular,then 35+90=125;

180-125=55°

6 0
3 years ago
Steve uses ⅜ gallon of paint to paint 4 identical birdhouses. How many gallons of paint does he use for each birdhouse? Plz hurr
Lelu [443]

Answer:

But of coarse, we need to set one up. 8/9 gallons of paint for 4 birdhouses. Divide 4 by both sides. Our answer is that for each birdhouse, he use about 0.22 gallons of paint. thank me later

3 0
2 years ago
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