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lolweapon
04.12.2020 •
Mathematics
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Ответ:
Use desmos, an online graphing calculator. Type in the equation and you will get the graph.
Ответ:
Step-by-step explanation:
Given that in the game Scrabble, there are a total of 100 tiles. Of the 100 tiles, 42 tiles have the vowels A, E, I, O, and U printed on them, 56 tiles have the consonants printed on them, and 2 tiles are left blank.
a. If tiles are selected at random, the probability that the first tile drawn from the pile of 100 tiles is a vowel =![\frac{42}{100} =0.42](/tpl/images/0447/8126/7ecf1.png)
b. If tiles drawn are not replaced, the probability that the first two tiles selected are both vowels =![0.42^2 = 0.1764](/tpl/images/0447/8126/9b014.png)
c. Event A is drawing a vowel, event B is drawing a consonant, and event C is drawing a blank tile. A1 means a vowel is drawn on the first selection, B2 means a consonant is drawn on the second selection, and C2 means a blank tile is drawn on the second selection. Tiles are selected at random and without replacement.
i. Find P(A1 and B2). =![\frac{42}{100} *\frac{56}{99} \\=0.2376](/tpl/images/0447/8126/1f4dd.png)
ii. Find P(A1 and c2). =![\frac{42}{100} *\frac{4}{99} \\=0.0170](/tpl/images/0447/8126/e4993.png)
iii. Find P(A1 and A2).=![\frac{42}{100} *\frac{41}{99} \\=0.1739](/tpl/images/0447/8126/ee559.png)