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Alekssandra [29.7K]
3 years ago
9

If the coefficient of correlation is a positive value, then the slope of the regression line

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

Answer:

must also be positive

Step-by-step explanation:

The sign of the correlation coefficient indicates whether the fitted line is sloping upwards or downwards, so it should be consistent with the sign of the slope of the fitted line. so if the correlation line is poitive so should the regression line

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Find the 72nd term of the arithmetic sequence 11, 7, 3, ...
Katen [24]

Answer:

-273

Step-by-step explanation:

find the common difference:

d = 7 - 11 = - 4

a_1 = 11

a_72 =  (72 - 1)* (-4)  +  a_1

a_72 =  (71)* (-4)  +  11

a_72 =   -273

3 0
3 years ago
Form the intersection for the following sets.<br> M=( )<br> N = {6, 7, 8, 9, 10)<br> MON =
Annette [7]

Answer:

M∩N = { }

Step-by-step explanation:

We have the two sets:

M={ } , N={6,7,8,9,10}

We have to find the intersection of these two sets.

The intersection of two sets is the set which contains the elements of both sets(common elements). We can denote it as M∩N

Every set contains an empty set.

In the given sets we can find the intersection as:

M = { } , N={6,7,8,9,10}

M∩N = { } ....

8 0
3 years ago
The value of the surface area of the cylinder is equal to the value of the volume of the cylinder. Find the value of x.
Genrish500 [490]
Radius, r = 7.2
Height, h = x

Surface of the cylinder
2*pi*r*x

Volume of the cylinder
pi*r^2*x

2*pi*r*h = pi*r^2*h
2 = r


6 0
3 years ago
A wildlife manager determines that there are approximately 200 deer in a certain state park.
Evgesh-ka [11]

7% in decimal form is .07
1st year 200+200(.07)=200(1+.07)
nth year 200(1.07)^n
a) plug in 4 for n above
b)200(1.07)^n=350 (solve for n)

4 0
3 years ago
If 39 is 1% of a number, what is that number? How did you find your answer?
Nat2105 [25]

Answer:

If you think of it logically, this problem is saying:

x ⋅ 1 % = 39

1 % is 1/100 so it's

x ⋅ 1/100 = 39

Divide both sides by 1/100 and you get

x = 39/1/100

Remember that when there is a fraction in the denominator we flip it and multiply that on top and bottom:

x = 39 ⋅ 100 (1/100) ⋅ 100

Therefore

x = 3900

You can check this by multiplying our answer by 1 %

3900 ⋅ 0.01 = 39

3 0
3 years ago
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