If 55% of a number is 143 and 45% of the same number is 117, find 100% of that number.
1 answer:
You might be interested in
Answer:
To solve this problem, we can use a system of equations.
We know the quadratic expression has the form
Using points (1,12) and (4,0), we can form the following system to find a and b.
We need to divide the second equation by -4 and sum both equations
Then, we use this value to find the other variable
or
According to this expression, after 2 seconds, the height is 16 feet.