(12+23)/5 *4 -30
-2
A biologist tags ducks living at a pond for her research project. She uses 14 blue tags, 19 red tags, 27 white tags and 6 yellow tags on individual ducks before releasing them back into the wild. When the biologist returns to the pond What is the probability of finding a duck with a yellow tag?
6/66 or 1/11
-4x+108 < 144
x >- 9
Adam rolls a 1-6 number cube 120 times. What is the probability that he will roll a 5 ?
20 times
A student rolls two 6 - sided number cubes at the same time. What is the probability of rolling a 1 on one cube or a 6 on the other?
Patty and John went out to eat for their anniversary dinner. There meal was $125. What is the total of their bill if they want to leave a 20% tip?
$150
A bicycle wheel has a 12 inch radius. How far does the wheel travel in one full turn?
75.36 in
A math student programmed a calculator to randomly generate a number from 11 to 20. If each number has the same probability of being generated, how many times would you expect to get a 13 in 160 random numbers?
16
24+2n = 2(5n-8)
n=5
A gift box has the shape of a triangular pyramid and a volume of 12 inches cubed. The base of the gift box dimensions are 3 inches long by 4 inches high. what is the height of the pyramid?
6 inches
Loretta wants to put a circular mirror on a wall. The mirror has radius of 10 inches. How many square inches of space will the mirror take up on the wall?
314 inches squared
A new shoe comes in four different colors: red, navy, blue or black. It also comes in whole sizes 5 to 12. You can also choose narrow or wide. If a pair of shoes is chosen at random for a display, what is the probability it will be a narrow, red, and size 9?
1/56