Which calculations performed on the calculator are reasonable, using estimation? Check all that apply. 2.8 × 210 = 588
50 divided by two-fifths equals 5
89 × 0.18 = 160.2
One-fifth divided by one-fifth equals 0.04
Three-fourths times 5 equals 3.75

Find the quotient. 50a2 – 98b2 -5a +7b

Antonia and carla have an equivalant percentage of green marbles in their bags of marbles. antonia has 4 green marbles and 16 total matbles. if carla has 10 green marbles , how many total marbles does carla have

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?