I think it should equal 70 but not 100%
Answer:
x^4 -y^4 +6x^2y +9y^2
Step-by-step explanation:
Finding the regression equation, her average speed on the 9th day should be expected to be of 6.92 minutes per mile.
<h3>How to find the equation of linear regression using a calculator?</h3>
To find the equation, we need to insert the points (x,y) in the calculator.
Researching the problem on the internet, the values of x and y are given as follows:
- Values of x: 1, 2, 3, 4, 5, 6.
- Values of y: 8.2, 8.1, 7.5, 7.8, 7.4, 7.5.
Hence, using a calculator, the equation for the average minutes per mile after t days is given by:
V(t) = -0.15143t + 8.28
Hence, for the 9th day, t = 9, hence the estimate is:
V(9) = -0.15143(9) + 8.28 = 6.92 minutes per mile.
More can be learned about regression equations at brainly.com/question/25987747
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you can work it out or put in random numbers until the two sides are equal
26 people would prefer vanilla out of 86 people
Step-by-step explanation:
The percentage is calculated by multiplying the quantity with rate of percentage
Given
Total people surveyed = 86
We have to calculate the number of people who prefer vanilla
The percentage of people who prefer vanilla = 30%
So,
Rounding off to the nearest whole number: 26
So,
26 people would prefer vanilla out of 86 people
Keywords: Percentage Percent
Learn more about percentage at:
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