Answer:
(3x+1)^2
Step-by-step explanation:
Answer:
Center is at (0,0)
Step-by-step explanation:
An equation of ellipse in standard form is:

Where center is at point (h,k)
From the equation of
. First, we add 45 both sides:

Convert into the standard form with RHS (Right-Hand Side) equal to 1 by dividing both sides by 45:

Therefore, the center of ellipse is at (0,0) since there are no values of h and k.
Answer:
The simplification is done below.
Step-by-step explanation:

= 
=
= 
An hour is 60 minutes so 80-60 = 20 so 1 hour and 20 minutes.
Answer:
-7x+28
hope this helps
Step-by-step explanation: