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LUCKY_DIMON [66]
3 years ago
7

Use the linear regression feature on a graphing calculator to find the correlation coefficient for the data. Round your answer t

o three decimal places.

Mathematics
1 answer:
Lerok [7]3 years ago
7 0

Answer:

0.9769

Step-by-step explanation:

Given the data :

X : 7.5, 9.9, 4.8, 9, 8.1, 1.7, 3.1

Y : 35, 6, 45, 18, 20, 89, 84

The Correlation Coefficient obtained by using a graphing calculator to model the data above is : 0.9769, this means a strong positive correlation exists between the two variables.

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The price of a skateboard, which normally sells for $50,, was decreased by 10% then decreased again by 10%, then increased by 10
AveGali [126]

Answer:

The price dropped by $5.45.

Step-by-step explanation:

    Initial price = $50.00

      Less 10 % =   -5.00

 1st sale price =   45.00

       Less 10% =    -4.50

2nd sale price =   40.50

      Plus 10 % =   +4.05

     Final price = $44.55

Change in price =   final   -  initial

                          =   44.55 - 50.00

                          = -$5.45

The price dropped by $5.45.

7 0
3 years ago
Write the equation that is the translation of y=|x| right 7 units and down 9 units.
DedPeter [7]

Answer:

y=|x-7|-9.

Step-by-step explanation:

The given function is  y=|x|.

When this function is translated to the right 7 units and down 9 units, then the equation becomes

y=|x-7|-9.

Always remember that; y=|x-c|-k is a transformation that translates the graph of y=|x| c units to the right and k units down.

The correct choice is the first option.

8 0
3 years ago
Find the volume of the sphere .<br> (Geometry)
asambeis [7]

Answer:

V = 32/3 pi

Step-by-step explanation:

The volume of a sphere is given by

V= 4/3 pi r^3

We know the radius is 2

V = 4/3 pi (2)^3

V = 4/3 pi (8)

V = 32/3 pi

6 0
3 years ago
Helppppppp let’s get to 100!!!!
Gemiola [76]
15 hope this helps you
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