Mathematics, 09.01.2020 04:31 whitethunder05
3. a deck of 40 cards consists of the following:
10 black cards showing squares, numbered 1–10
10 black cards showing circles, numbered 1–10
10 red cards showing x’s, numbered 1–10
10 red cards showing diamonds, numbered 1–10
a card will be selected at random from the deck.
a. i. are the events "the card shows a square" and "the card is red" disjoint? explain.
ii. calculate the probability that the card will show a square or will be red.
b. i. are the events "the card shows a 5" and "the card is red" disjoint? explain.
ii. calculate the probability that the card will show a 5 or will be red.
Answers: 2
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Arectangular lawn is 14m long and 10m wide. a strip of uniform width is mowed around the outside of the lawn. how wide is the strip when the area of the unmowed portion of the lawn is 12m². (the answer is 4m, but i need to know how to solve it)
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3. a deck of 40 cards consists of the following:
10 black cards showing squares, numbered 1...
10 black cards showing squares, numbered 1...
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