Question 72171
Suppose you toss a coin and roll a die.What is the probability that you toss heads and roll a 4?
These are independent events:
P(H and 4) = P(H)*P(4) = 1/2 * 1/6 = 1/12
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The next one is,A bag contains 6 red marbles,9 blue marbles,and 5 green marbles.You withdraw one marble,replace it,and then withdraw another marble.
What is the probability that you do not pick two green marbles?
P(g and g) = 5/20 = 1/4
P(not two green) = 1-1/4 = 3/4
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Third one is,actually a proportion question that involves fractions,Solve the proportion:16 over 4d +2=8 over 3.
16/(4d+2) = 8/3
Cross multiply to get:
48 = 32d+16
32d=32
d=1
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And final question is,A solution contains 2.2 liters of water.Convert this measurement to milliliters
2.2 liters (1000 ml/1 liter) = 2200 ml
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Cheers,
Stan H.