All parabolas must have two, but they can either have 2 real solutions, 1 real solutions, or none. A real solution is where it crosses the x axis. If it touches the axis, it is a double zero, there is 1 real solution, and it is the same number. 2 solutions will have it cross the x axis twice, and no solutions means that the root is an imaginary number
The answer should be 89.98 cm squared
4/10 can be simplified to 2/5. 1/5 is equal to 20% (you probably want to memorize that) so all you have to do is multiply 20% by 2 (because of the numerator) and get 40%
So therefore 4/10 = 2/5 or 40%
P.S if you have anything over ten that needs to be a percent just multiply 10% by the numerator.
Answer:
0.4
Step-by-step explanation: