Answer:
85
Step-by-step explanation:
by dividing 2550 from 30
I think it’s seventy five
The answer is 5x+50=y
Because you have to pay 50 dollars to get a lesson you have to pay it plus the number of lessons multiplied by the price.
Answer:
210 beats
Step-by-step explanation:
28 beats per 4 seconds
28 ÷ 4 = 7
7 beats per second
7 beats · 30 seconds
= 210 beats
Answer:
a. the line that makes the sum of the squares of the vertical distances of the data points from the line (the sum of squared residuals) as small as possible.
Step-by-step explanation:
If we have N points
and we want to adjust a model 
We can define the error associated to this like that:
![E(a,b) = \sum_{n=1}^N [y_n -(ax_n +b)]^2](https://tex.z-dn.net/?f=%20E%28a%2Cb%29%20%3D%20%5Csum_%7Bn%3D1%7D%5EN%20%5By_n%20-%28ax_n%20%2Bb%29%5D%5E2)
So as we can see here we are adding the square distances between the real and the adjusted values in order to minimize the error for this reason the correct answer is:
a. the line that makes the sum of the squares of the vertical distances of the data points from the line (the sum of squared residuals) as small as possible.
For this case we need to calculate the slope with the following formula:
Where:
And we can find the intercept using this: