marciekinser
22.04.2021 •
Mathematics
If a bag consist of 4 red marbles, 3 green marbles, and 2 yellow marbles. What is the sample space if 3 marbles are chosen and none are red?
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Ответ:
9514 1404 393
4/13 h ≈ 0.308 h22 9/13 km ≈ 22.7 kmStep-by-step explanation:
Mary and Amaruk are starting 35 -15 = 20 km apart. Their closing speed is 40 +25 = 65 km/h. The time it will take to close the gap between them is ...
t = (20 km)/(65 km/h) = 20/65 h = 4/13 h ≈ 0.308 h
They will pass each other after 4/13 hours, about 18 minutes 28 seconds.
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In that time, Mary will have increased her distance from Hall Beach by ...
d = (4/13 h)(25 km/h) = 100/13 km = 7 9/13 km
Her distance from Hall Beach when she passes Amaruk will be ...
15 km + 7 9/13 km = 22 9/13 km ≈ 22.7 km . . . . . distance from Hall Beach