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Mathematics

1 answer:

maxonik [38]2 years ago

7 0

"He starts by sprinting 100 yards", so the first term is a_1 = 100

The common difference is d = 5 because he's adding 5 yards per day. The "21 days" info isn't going to be used at all

So because a_1 = 100 and d = 5, this means
a_n = a_1 + d*(n-1)
a_n = 100 + 5*(n-1)
a_n = 100 + (n-1)*5

Answer is choice D

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Answer:

289/290

Step-by-step explanation:

Given that the chance of Donnell being selected is 1/290

then P( Donnell being selected )= 1/290

Since Donnell and Maria are both member of a population.

from probability theorem which gives the likely hood of an event to happen which cannot be more than 1, then the probability of Donnell and Maria to be selected is 1

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