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Kazeer [188]
3 years ago
9

A line of best fit has a correlation of -0.98. What can you conclude about the slope of the line?

Mathematics
2 answers:
kirza4 [7]3 years ago
8 0

You can conclude that the slope of the line of best fit is FAIRLY accurate. -0.98 is a very good correlation coefficient as it's very close to 1. The closer the coefficient is to one, the more accurate the line is. Hope this helped :)

Anna35 [415]3 years ago
3 0

You can conclude that the slope of the line of best fit is FAIRLY accurate. -0.98 is a very good correlation coefficient as it's very close to 1. The closer the coefficient is to one, the more accurate the line is. Hope this helped :)

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If tan x =8/15 and 0°<x<90°,find the value of cos x​
Shtirlitz [24]

9514 1404 393

Answer:

  15/17

Step-by-step explanation:

cos(arctan(8/15)) = 15/17

__

You could assume the ratio values 8 and 15 represent the opposite and adjacent sides of a right triangle. Then the hypotenuse is ...

  h = √(8² +15²) = √289 = 17

The cosine is the ratio of the adjacent side to the hypotenuse, so is ...

  cos(x) = 15/17

6 0
3 years ago
A taxi charges $2.50 for the first mile and $0.40 for each mile after that. The expression below shows how to find the total cos
Svet_ta [14]

The expression which shows the total cost is 2.50+0.4x and the cost of riding 20 miles is $10.50.

Given a taxi charges $2.50 for the first mile and $0.40 for each mile

We are required to make an expression showing total cost and total cost of a 20 mile ride.

let the miles ride by tax be x.

Total cost of the product or service=Number of units*price of one units.

We have been given that $2.50 is fixed so we will not multiply our variable charge with $2.50 and multiply 0.40 with x.

So,the expression showing looks like 2.50+0.40x.

Now to find the cost when taxi travels 20 miles, we have to put x=20,

Cost=2.50+0.40*20

=2.50+(40*20)/100

=2.50+800/100

=2.50+8

=$10.50

Hence the expression which shows the total cost is 2.50+0.4x and the cost of riding 20 miles is $10.50.

Learn more about expression at brainly.com/question/723406

#SPJ4

6 0
2 years ago
Find SX if SM=6x-3 and XM=4x-8
Natali [406]

Answer:

10x -11

Step-by-step explanation:

SX =SM + MX

       = 6x-3 + 4x-8

      Combine like terms

        = 10x -11

8 0
3 years ago
Read 2 more answers
Find the area of the shaded porrion​
stich3 [128]

Answer: 111.72 m^2 if they want round its 112

Is from O to C 14m

A=pixr^2

3.14x14^2= 615.44 m/2 half circle = 307.72

Area of triangle A= 1/2bh. .5x28x14=196

307.72-98=196= 111.72 m^2

Step-by-step explanation:

3 0
3 years ago
Find the perimeter of each figure
Sliva [168]

Answer:

66) P = 38m

67) P = 32.7m

Step-by-step explanation:

Perimeter of triangle

P = a + b + c

P = 8 + 16 + 14

P = 38m

Perimeter of trapezoid

P = a + b + c + d

P = 6.4 + 13.6 + 6 + 6.7

P = 32.7

3 0
3 years ago
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