Answer:
Step-by-step explanation:
Given
Required
Use R code to determine the regression equation
First, write the following code in a R program
~
Next, run the program
See attachment for program and output
From the output, go to coefficients:
Check Estimate Std. column, you have the following:
implies that:
Intercept
Hence, the least square regression equation is:
Answer:
That parabola hits (-5,0) and (9,0) so the x-intercepts are -5 and 9
Step-by-step explanation:
Use desmos its really helpful
For the first one it is 2 miles and for number 2 it is $4.76
Answer:
2/(7a) < x < 7
Step-by-step explanation:
The product of roots of ax² +bx +c is c/a. In this case, that means the second root of the equation is ...
... 2/(7a)
Since a < 0, the parabola opens downward and 2/(7a) < 0. The quadratic function will be positive between the two roots, on the interval ...
... 2/(7a) < x < 7
Answer:
Complemetry angle = 90° - 40°
= 50°
