Answer:
Step-by-step explanation:
The easiest way to do this is to assume you don't get a 1 or 2. You make your first draw from 8.
8 * 7 * 6 * 5 = 1680
The total number of ways of drawing 4 marbles is
10*9 * 8 * 7 = 5040
P(`(1 or 2) ) = 1680 / 5040 = 0.33333
The probability of getting a 1 or 2 in 4 throws = 1 - 0.3333 = 0.66667
Answer:
She was 20,000 ft high when she jumped from the plane.
Step-by-step explanation:
We can solve this problem with addition. Just add the 5,000 ft she was from sea level and the 15,000 feet she had already dropped, and you have how far she dropped, which is 20,00 ft.
Chen might lisen 160 classical songs
you add them all the song
then you you divide how many song there are by 360
it should equal 40 so you multipythat by 4
(I hope i got that right)
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Answer:
the mean of the number of sweets in the boxes is 20
Step-by-step explanation:
that is the solution above
