I think its 149/ 490. Not sure, but pretty confident. Hope this helps.
let x =the number
Step-by-step explanation:
81+x=3x-39
group like terms
81+39=3x-x
120=2x
120/2=2x/2
60=x
therefore x =60
Answer:
R-squared is a statistical measure of how close the data are to the fitted regression line.
Step-by-step explanation:
It is also known as the coefficient of determination, or the coefficient of multiple determination for multiple regression. ... 100% indicates that the model explains all the variability of the response data around its mean.
Answer:
![a(t) =n(0.25t^2)](https://tex.z-dn.net/?f=a%28t%29%20%3Dn%280.25t%5E2%29)
Step-by-step explanation:
Given
Required
Determine the area in terms of time
From the question, we have:
-> radius per time
and
--> area from radius
The interpretation of the question is to find the composite function: a(t)
If
, and
, the
Substitute 0.5t for r
![a(t) =n(0.5t)^2](https://tex.z-dn.net/?f=a%28t%29%20%3Dn%280.5t%29%5E2)
![a(t) =n*0.25t^2](https://tex.z-dn.net/?f=a%28t%29%20%3Dn%2A0.25t%5E2)
![a(t) =n(0.25t^2)](https://tex.z-dn.net/?f=a%28t%29%20%3Dn%280.25t%5E2%29)
Answer:
y = 3x - 5
Step-by-step explanation:
We know that the equation 'y = 3x + ?' intersects the point (1, -2). This means that when x = 1, y = -2 in out equation above. To solve this just plug in the x and y values to get '?'.
![y = 3x + ?\\-2 = 3(1) + ?\\-5 = ?](https://tex.z-dn.net/?f=y%20%3D%203x%20%2B%20%3F%5C%5C-2%20%3D%203%281%29%20%2B%20%3F%5C%5C-5%20%3D%20%3F)
Now that we know '?' is -5, we write it back into slope intercept form, so our final answer is y = 3x - 5