Bob Bluster, the KNEWS meteorologist, determined that the mathematical odds of $\emph{no rain}$ tomorrow are 11:9. What would a mathematics student determine as the percent chance there $\emph{will be rain}$ tomorrow? (If the odds of an event happening are $a:b$, then the probability that it occurs is $\frac{a}{a + b}$.)

45% chance there will be rain tomorrow.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

11:9 odds that there will be no rain

In 11+9 = 20 experiments, in 11 there will be no rain and 9 there will be rain.

Percent change there is rain:

Desired outcomes:

9 experiments(rain)

Total outcomes:

20 experiments

Probability

45% chance there will be rain tomorrow.

answer for #1 is c

answer for #2 is d

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answer by yourhope:

hi! : )

a farmer that lived in ancient egypt would most likely be barried in the sand, in the desert!

: )