You have 20 cookies total in the jar. The probability of choosing an oatmeal is 4/20, and the probability of choosing a peanut butter cookie is 8/20. In order to find the probability of pulling a peanut butter cookie OR an oatmeal cookie, we have to add the probabilities together. 8/20 + 4/20 = 12/20 or 6/10 or 3/5. The answer is C.
He would have to charge 80 cents per candy bar!
Out of the 100 times you visit: the 36 and 72 time you will receive a free beverage and a free appetizer
D
22cm—>100%
2cm—->2x100\22=9.09%
Diego’s error was 2cm Which represents 9.09% of the actual length of the pen
9514 1404 393
Answer:
Tn = (n/2)(n +1)
Step-by-step explanation:
The first differences are ...
x -1, 6 -x, y -6, 15 -y
Then the second differences are ...
(6 -x) -(x -1) = 1 ⇒ 7 -2x = 1 ⇒ x = 3
(y -6) -(6 -x) = 1 ⇒ x + y = 13 ⇒ y = 10
(15 -y) -(y -6) = 1 ⇒ 21 -2y = 1 ⇒ y = 10
Then the sequence is ...
1, 3, 6, 10, 15, ...
which is the sequence of triangle numbers. The formula for the general term is ...
Tn = (n/2)(n +1)
