Answer:
or 
Step-by-step explanation:
The given quadratic equation is
Group the constant terms on the right hand side.
Divide through by 5.
Add the square of half the coefficient of x., which is 
to both sides of the equation.
The left hand side is now a perfect square.
Take the square root of both sides;
or 
or 
or
Answer:
Step-by-step explanation:
Set up the equation:
Since C(t) gives the number of cars purchased in the t-th year after 1998, then make the number of cars equal to 15 000 and solve for t - the year:
20t^2 = 15000
t^2 = 750
t = 
The year will be simply 1998 + 5 \sqrt{30}
Answer: true sometimes
Step-by-step explanation:
The main difference between integers and whole numbers is the fact that integers can be a negative value while whole numbers cannot be negative.
If an integer is added to an integer, it can become an integer or a whole number.
I hope this is clear, please mark as brainliest answer
Answer:
-16 (t+3) (t-3)
Step-by-step explanation:
