Mathematics, 21.03.2020 01:44 jamarstand
Robert has built a mechanical model solar system with three balls representing planets at the end of rods. Each rod is attached to the center ball, representing the sun. The planets are lined up when he turns on the motor. The innermost planet makes a revolution in 12 seconds, the middle planet makes a revolution in 20 seconds, and the outermost planet makes a revolution in 28 seconds. After how many seconds will the planets be lined up again?
Answers: 3
Mathematics, 21.06.2019 21:30
Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent.the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244
Answers: 1
Mathematics, 21.06.2019 23:00
Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.
Answers: 2
Mathematics, 22.06.2019 01:00
The graph shows how many words per minute two students read. drag to the table the unit rate that matches each graph.
Answers: 2
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