Probablility
What is the probability of rolling a 2 on a six-sided dice?
1/6
Write as a percent
1/6
16.6%
What does C.O.P. stand for?
Constant of Proportionality
Identify the property shown here
n = 1 x n
Identity property of multiplication
Describe what a supplementary angle is.
angles that add up to 180 degrees
What is the difference between theoretical probability and experimental probability?
Theoretical probability is what should happen and experimental probability is what actually happens.
Write as a decimal
7/11
0.63
State whether this equation shows a proportional relationship or not. If it does, identify the C.O.P., if it doesn't explain why not.
Y = 4/5x - 8
Not proportional because when you subtract 8, it will mess up the equation of y = kx
Identify the property shown here
9(2x + 7) = 18x + 63
Distributive property
The shortest person is 2ft tall. What is the height of everyone else?
h > 2
You have a bag of 5 green marbles, 4 red marbles, 7 white marbles, 3 purple marbles, and 1 blue marble. Find the probabilities.
A. P(green or red)
B. P(purple and white)
A. 9/20
B. 0
Grayson bought a golden Stanley for $208. This is 27% less than it originally cost. What was the original cost of the Stanley?
*hint do a proportion*
*Use calculator*
$284.93
100 - 27 = 73
73/100 = 208/x
The scale for a model airplane compared to its actual size is 2 in:11 ft. If the wings of the plane in real life are 50 feet wide, how wide is the model?
W= 9.09 inches
2/11 = w/50
List at least 3 out of 9 properties
Commutative property of addition/multiplication
Associative property of addition/multiplication
Identity property of addition/multiplication
Multiplication property of 0
Multiplication property of -1
Distributive property
What is the total degrees in a septagon?
900 degrees
(n-2) (180)
(7-2) (180)
A computer password uses 3 letters, followed by 2 digits. If letters are allowed to be repeated, but numbers can't be repeated, how many combinations are possible for the password?
*use calculator*
1,581,840 combos
You put $12,000 into a savings account. After 5 years, you have earned $1,020 in interest. What was your interest rate?
*Use calculator*
1.7% interest rate
I = prt
1,020 = (12,000) (5) (r)
1,020 = 60,000r r = 0.017
If a 38-foot tree casts a 7.2-foot shadow, and John is standing nearby and has a 1.1-foot shadow, how tall is John to the nearest tenth of a foot?
5.8 feet
38/7.2 = x/1.1
What is another name for the identity property of addition?
Additive identity property
What is the volume of a sphere, cylinder, and cone?
Sphere: V = 4/3(3.14)r3
Cylinder: V = 3.14r2h
Cone: V = 1/3(3.14)r2h