Let S be a sample space of equally likely outcomes, and let event E be a subset of S. Then the probability that event E occurs is given by the formula P(E) = Start Fraction n (Upper E ) Over n (Upper S ) End Fraction . If the order of selection matters, use permutations to compute the number of ways for E to happen and to compute the size of the sample space. If it does not, use combinations.

the answer is:

the answer is:

to solve the problem, we need to remember the quotient of power property, it's defined by the following relation:

if we have a quotienf of powers that have the same base, we need to keep the same base and subtract the exponent of the denominator power to the exponent of the numerator power.

so, we are given the expression:

then, calculating we have:

hence, the answer is:

have a nice day!

1.) 21

2.) 0.453

3.) 1.5

4.) 48

5.) $ 22

step-by-step explanation:

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !