Answer:
The only one
Step-by-step explanation:
The one that is shown has a negative b^2-4ac value.
We know this because the function has no real roots -> that means that they must be complex, which can only occur if b^2-4ac < 0
Answer:
7. Closed circle with the line going left (put dot on 8)
9. Closed circle on -9 with the line going right
11. Open circle on -4 1/2 with the line going left
Step-by-step explanation:
35 pencils would cost $2.80,
$1.60 / 20 = $.08
Each pencil costs $0.08 each
.08 * 35 = 2.80
Answer:
18
Step-by-step explanation:
6*2=12
9*2=18
Two laps per minute