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gtnhenbr [62]
2 years ago
11

PLS HELP ME!!!!! IT IS TIMED

Mathematics
2 answers:
Leni [432]2 years ago
3 0

Answer:

C. 13

Step-by-step explanation:

sineoko [7]2 years ago
3 0

Answer:

C

Step-by-step explanation:

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A random sample of ten professional athletes produced the following data where x is the number of endorsements the player has an
lukranit [14]

ŷ= 1.795x +2.195 is the equation for the line of best fit for the data

<h3>How to use regression to find the equation for the line of best fit?</h3>

Consider the table in the image attached:

∑x = 29,  ∑y = 74, ∑x²= 125, ∑xy = 288,  n = 10 (number data points)

The linear regression equation is of the form:

ŷ = ax + b

where a and b are the slope and y-intercept respectively

a = ( n∑xy -(∑x)(∑y) ) / ( n∑x² - (∑x)² )

a  = (10×288 - 29×74) / ( 10×125-29² )

  = 2880-2146 / 1250-841

  = 734/409

  = 1.795

x' =  ∑x/n

x' = 29/10 = 2.9

y' = ∑y/n

y' = 74/10 = 7.4

b = y' - ax'

b = 7.4 - 1.795×2.9

  = 7.4 - 5.2055

  = 2.195

ŷ = ax + b

ŷ= 1.795x +2.195

Therefore,  the equation for the line of best fit for the data is ŷ= 1.795x +2.195

Learn more about regression equation on:

brainly.com/question/29394257

#SPJ1

3 0
1 year ago
write the number 2 millions, 6 hundred thousands, 3 thousand, 1 hundred, 2 in Standard Form and Expanded Form
Mnenie [13.5K]
In standard form it would be 2,603,102. In expanded form it would be 2,000,000+600,000+3,000+100+2.
5 0
3 years ago
Bag contains 5 blue, 12 black, 6 red, and 7 green marbles. If one marble is chosen at random the probablity that it is NOT blue
Alex Ar [27]

Answer:

D. 5/6

Step-by-step explanation:

There are 30 marbles

If you add the black, red, and green marbles together, you get 25

25/30 is equivalent to 5/6

3 0
2 years ago
The volume of a cube is 441cm3.<br> Work out the length of its side rounded to 1 DP.
Klio2033 [76]

Answer:

volume of a cube = 441cm3.

l³=441cm³

l=7.6cm

5 0
3 years ago
A rental car company charges $68.80 per day to rent a car and $0.08
viktelen [127]

Answer:

  • 5 days maximum

Step-by-step explanation:

<u>Given</u>

  • Daily charge = $68.80
  • Charge per mile = $0.08
  • Target distance = 325 miles
  • Money limit = $370

<u>Required inequality:</u>

  • 68.8d + 325*0.08 ≤ 370

<u>Solving for d:</u>

  • 68.8d + 26 ≤ 370
  • 68.8d ≤ 344
  • d ≤ 344/68.8
  • d ≤ 5

Up to 5 days is the answer

7 0
2 years ago
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