There are three basic methods for solving quadratic equations: factoring, using the quadratic formula, and completing the square.
1/4 of 180 gets you the answer 45
10 red
8 blue
2 green
Total number = 20
Probability that Gina takes a red pen = number of red pens divided by the total = 10/20 = 0.5 = 50%
If she repeats the event, the second time the probability is the same: 0.5 = 50%
Probability of two events = probability of the first one multiplied by the probability of the second = 0.5 x 0.5 =0.25 = 25%
Answer:
Probability = 0.25 = 25%
38 x 1 = 1
38 x 0.1 = 3.8
38 x 0.01 = 0.38
-7 Good luck with other questions!
