B. is the only one we know for sure. We know that when we put in -2 we get exactly one answer or output.
Answer:
x=2.5&.5
Step-by-step explanation:
The quadratic formula is (-b+or-sqrt(b^2-4ac)/2a
12+or-sqrt((-12^2)-4(4)(5))
12+or-sqrt(144-80)
12+or-sqrt(64)
(12+8)/8 and (12-8)/8
x=2.5 and x=.5
337.5. 1/4x= 37.5. Multiply that by 9, get 337.75
25% is equal to
. To get 25% of 300, we multiply 300 by either 0.25 or
. This gives us
