The answer is 5.
You can divide 20 by 4 and get 5
Four point one
Or
Four and one tenths
Part A: the radicand is the same as the discriminant, therefore is b2 - 4ac
In 9x^2 - 16x + 60 = 0, a = 9, b = -16, c = 60
so b2 - 4ac =

Part B: Solve 4x^2 + 8x - 5 = 0
What would make 8? (5×2)-2 = 8, so:
(2x+5)(2x-1) = 0
2x+5 = 0
2x = -5
x = -5/2
2x-1 = 0
2x = 1
x = +1/2
So the solutions are: -5/2, +1/2
Answer:
I solved the question 1 to 14 but I'm sorry I cannot do 15 -20
Step-by-step explanation:
hope this helps
Answer: i think its 82 but im not sure
Step-by-step explanation: