Answer:
first blank: -1
second blank: -7
third blank: -13
fourth blank: - 19
Step-by-step explanation:
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Step-by-step explanation:
The horse eats 9/12 in 9 days.
<span>3 of the 20 toothbrushes are defective, so the initial probability of selecting a defective toothbrush on the first try is 3/20. After that, there will be 2 defective toothbrushes in the remaining 19, so the probability of selecting one of those on the 2nd try will be 2/19. To get the probability of those two events happening sequentially, we multiply the two probabilities. Thus (3/20)*(2/19) = 6/380 = 0.0157, or about 1.6%.</span>
Answer:
Step-by-step explanation:
B
