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Papessa [141]
3 years ago
6

Need help extra points and Mark brainlist

Mathematics
2 answers:
hichkok12 [17]3 years ago
5 0
Answer:
The answer is 10
pochemuha3 years ago
3 0
The answer for this is 10
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How to solve this: a 20 inch flat panel computer monitor is on sale for $ 249.99. it was reduced $ 80.00 from the original price
Vilka [71]
The reduction expressed as a fraction of the original price is
  80.00/249.99 ≈ 0.3200128 = 32.00128/100 = 32.00128%

The reduction in price was about 32%.
3 0
3 years ago
Calculate the second moment of area of a 4-in-diameter shaft about the x-x and yy axes, as shown.
Keith_Richards [23]
Second moment of area about an axis along any diameter in the plane of the cross section (i.e. x-x, y-y) is each equal to (1/4)pi r^4.
The second moment of area about the zz-axis (along the axis of the cylinder) is the sum of the two, namely (1/2)pi r^4.

The derivation is by integration of the following:
int int y^2 dA
over the area of the cross section, and can be found in any book on mechanics of materials.

6 0
3 years ago
A 2015 Gallup poll of 1,627 adults found that only 22% felt fully engaged with their mortgage provider.
Zigmanuir [339]

Answer: (20.0\%,24.0\%)

Step-by-step explanation:

Given, A 2015 Gallup poll of 1,627 adults found that only 22% felt fully engaged with their mortgage provider.

Here , 1,627 adults are determining the sample.

Thus, sample size : n = 1627

Also, the sample proportion of adults felt fully engaged with their mortgage provider are \hat{p}=22\%=0.22

for 95% confidence level , critical z-value =1.96

Then , the 95% confidence interval would be :-

\hat{p}\pm z\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

Substituting values , we get

0.22\pm 1.96(\sqrt{\dfrac{0.22(1-0.22)}{1627}})\\\\=0.22\pm 1.96\sqrt{\dfrac{0.22\times0.78}{1627}}\\\\\approx0.22\pm0.0201\\\\=(0.22-0.0201,\ 0.22+0.0201)\\\\=(0.1999,\ 0.2401)\approx(20.0\%,24.0\%)

Hence, the required 95% confidence interval using only 1 decimal : (20.0\%,24.0\%) .

4 0
3 years ago
This is an economics question
Svetllana [295]
Well, for starters, this is more of a question for you than it is for me yet here's something to give you an idea.... I think don't let it get personal and leave your life stories at the door. Also, don't ask yourself, "how can this be done or worked out,", ask the people and if they're biased it's hard to tell so just hope that they leave off topic, etc... Ideas and or comments. The best I can give you.
4 0
4 years ago
Im so confused...? can someone help me
Gre4nikov [31]

Answer:

B

Step-by-step explanation:

If you distribute the numbers in the parenthesis (which means to multiply the outside number once with each inside number), then it should come up looking like the equation above.

5 0
3 years ago
Read 2 more answers
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