brandon4321
Suppose you choose a marble from a bag containing 3 red marbles, 3 white marbles, and 5 blue marbles. You return the first marble to the bag and then choose again. Find P(red and blue).
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brookie5150
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well, what do you get when you add all the marbles?
brandon4321
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11
brookie5150
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okay and how many of those 11 are red or blue?
brandon4321
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8
brookie5150
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so the probability of choosing a red or a blue marble would be 8/11. c:
brandon4321
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:) thanks i have more.
brookie5150
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okay. i'm happy to help.
brandon4321
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You toss a coin and roll a number cube. Find P(tail and a six).
brookie5150
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well how many sides does a coin have?
brandon4321
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2
brookie5150
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so the probability of getting tails is 1/2.
brookie5150
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now for the next one. how many sides does the number cube have?
brandon4321
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... i honestly dont know
brookie5150
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lol, 6.
brandon4321
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lol okay then what?
brookie5150
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so the probability of rolling a six is 1/6
brandon4321
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okay lol thanks here comes the next one
brandon4321
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Anthony is making a collage for his art class by picking shapes randomly. He has five squares, two triangles, two ovals, and four circles. Find P(circle is chosen first
brookie5150
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how many shapes do you have all together?
brandon4321
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13
brookie5150
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how many of those 13 are circles?
brandon4321
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4
brookie5150
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sooo, the probability of choosing a circle is 4/13.
brandon4321
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you are very smart you have a instagram?
brookie5150
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thank you.
brandon4321
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you have a instagram?
brandon4321
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simplify (7 – c)(–1)