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vekshin1
3 years ago
5

What is the area of this figure? Nearest tenth. Use 3.14 for pi if needed.

Mathematics
1 answer:
vovikov84 [41]3 years ago
6 0

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$2.95 coat; 5% tax what is the answer I don't understand it
lukranit [14]
The answer is that the coat costs $3.10 because you round $3.0975 to $3.10
4 0
3 years ago
Use an area model to solve the<br> expression 0.6 × 0.4. (6-4)
Vinvika [58]

Step-by-step explanation:

the answer is 48 because

8 0
3 years ago
Simplify -2.8f+0.9f-12-4
bogdanovich [222]

Answer:

  • -1.9f - 16

Step-by-step explanation:

  • -2.8f + 0.9f - 12 - 4 =
  • (-2.8 + 0.9)f - (12 + 4) =
  • -1.9f - 16
3 0
3 years ago
Read 2 more answers
SCCoast, an Internet provider in the Southeast, developed the following frequency distribution on the age of Internet users. Fin
Tomtit [17]

Answer:

Mean: 40.17 years.

Standard deviation: 10.97 years.

Step-by-step explanation:

The frequency distribution is in the attached image.

We can calculate the mean adding the multiplication of midpoints of each class and frequency, and dividing by the sample size.

The midpoints of a class is calculated as the average of the bounds of the class.

Then, the mean can be written as:

E(X)=\dfrac{1}{N}\sum f_iX_i\\\\\\E(X)=\dfrac{1}{60}(3\cdot15+7\cdot25+18\cdot35+20\cdot45+12\cdot 55)=\dfrac{45+175+630+900+660}{60}\\\\\\E(X)=\dfrac{2,410}{60}=40.17

The standard deviation can be calculated as:

s=\sqrt{\dfrac{1}{N-1}\sum f_i(X_i-E(X))^2}\\\\\\s=\sqrt{\dfrac{1}{59}[3(15-40.17)^2+7(25-40.17)^2+18(35-40.17)^2+20(45-40.17)^2+12(55-40.17)^2]}

\\\\\\s=\sqrt{\dfrac{1}{59}( 1,900.59  + 1,610.90  + 481.12  + 466.58  + 2,639.15  )}\\\\\\s=\sqrt{\dfrac{ 7,098.33 }{59}}=\sqrt{120}=10.97

4 0
3 years ago
When solving 8,411 ÷ 52, you decide to start by subtracting 100 groups of 52. What is the remainder?
IceJOKER [234]

Answer:

I think that the remainder would be 39. I am not 100% sure however.

Step-by-step explanation:

I started by doing 8411-5200 because 100 groups of 52 is 5200. I got 3211 and then divided that by 52. I got 62 r 39. Hope this helps!!

3 0
2 years ago
Read 2 more answers
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