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Ede4ka [16]
3 years ago
15

Attempting to use the regression equation to make predictions beyond the range of the data is called​ _______.

Mathematics
1 answer:
masha68 [24]3 years ago
4 0
<span>Extrapolating. Extrapolating is making inferences that beyond the data range. In contrast to this, interpolating is using the data set to make estimates as to what would happen in the data range.</span>
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Can somebody help me with this. Please see the attachment.
mr_godi [17]
<h3>Answer:</h3>

48

<h3>Step-by-step explanation:</h3>

Let x represent the distance OC. Then CD = x+2, and DP = 16-x. The radius of circle P is ...

... CD +DP = (x+2) +(16-x) = 18

The radius of circle O is ..

... OC + CD = (x) + (x +2) = 2x+2

The length OP is ...

... OC + CP = (x) + (18) = x+18.

Now, the perimeter of ΔAOP is ...

... radius of circle O + radius of circle P + OP = 80

... = (2x+2) + 18 + (x+18) = 3x+38 = 80

Then x is ...

... x = (80 -38)/3 = 14

and the radius of circle O is

... 2x +2 = 2·14 +2 = 30

The desired sum is ...

... OB + BP = (radius of circle O) + (radius of circle P) = 30 + 18

... OB + BP = 48

6 0
3 years ago
A circular pool of radius r m has a path 2 m wide around its perimeter. If the area of the pool is four-fifths of the total area
Rainbow [258]

9514 1404 393

Answer:

  pool radius is 8+4√5 ≈ 16.94 meters

Step-by-step explanation:

Let r represent the radius of the pool. Then r+2 is the radius to the outside of the walkway. The ratio of areas is given as 4/5, so we have ...

  πr²/(π(r+2)²) = 4/5

  5r² = 4(r² +4r +4) . . . . cross-multiply

  r² -16r -16 = 0 . . . . . . . subtract the right-side expression from both sides

__

  r² -16r +64 = 80 . . . . . add 80 to complete the square

  (r -8)² = 80

  r -8 = √80 = 4√5 . . . . square root; use only the positive root

  r = 8 +4√5 ≈ 16.94 . . . meters

The radius of the pool is 8+4√5 ≈ 16.94 meters.

_____

The area of a circle of radius r is given by the formula ...

  A = πr²

4 0
3 years ago
Please help me with this if youre feeling generous today! thank you!
Maksim231197 [3]

Answer:

The answer is number 2 because a positive number is always bigger than a negitive number

5 0
3 years ago
8n+16.2=1.6 what is n
creativ13 [48]
-1.825. you subtract 16.2 from 1.6. then divide that number by 8
5 0
3 years ago
Read 2 more answers
The net of a cone is composed of a circle and a <br> triangle<br> wedge<br> triangle
jok3333 [9.3K]

Answer:

I would say triangle. But I am not completely sure!

Step-by-step explanation:

Hope this helps!

6 0
2 years ago
Read 2 more answers
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