Equations and Inequalities
-10a+8+9a-3
-a+5
What is the theoretical probability of rolling a 2 or 3?
1/3
The diameter of a circle is 18 inches. What is the area of the circle? Round to the nearest tenth.
A=254.5 square inches
When conducting a survey, do you want a biased or unbiased sample?
unbiased
What is the formula for the volume of a rectangular prism?
V=lwh
Simplify -6(2p+7)
-12p-42
Theoretical Probability is what ____________ happen.
Experimental Probability is what __________ happens.
should; actually
The radius of a circle is 12 meters. Find the circumference rounded to the nearest tenth.
C=75.4 meters
Calculate the mean of the data.
3, 4, 5, 6, 6, 7, 7, 8, 9, 10, 12
7
What is the formula for the circumference of a circle?
C=pid
Use the statement below to find the number.
Three more than a product of a number and -9 is equal to 21.
-2
If the probability of an event is 1 or 100% what would you call the likelihood of this event?
A rectangular prism has a length of 13.1 cm, a width of 5.6 cm, and a height of 7 cm. What is the volume of the prism? Round to the nearest tenth.
V=513.5 cubic cm
Each quartile of a box and whisker plot represents what percent of data?
25%
What is the formula for surface area of a rectangular prism?
SA=2LW+2WH+2LH
-7t>7
t<-1
6/20 students say that m&m's are their favorite candy. How many students prefer m&m's out of 150?
45 students
A rectangular prism has a length of 11 in, a width of 4 in, and a height of 6 in. What is the surface area of the prism?
SA=268 square inches
When surveying students about their favorite ice cream shop which would create a biased sample?
-surveying every 4th person in the lunch line
-surveying 5 random students in each 5th period
-surveying 25 students at Coldstone
-surveying every 8th student to get off the bus in the morning
surveying 25 students at Coldstone
What is the formula for volume of a triangular prism?
V=Bh where B=1/2bh
-3/4x+4=16
-16
A regular 6-sided number cube is rolled 100 times. How many times would you expect to roll a multiple of 2?
50
The length of each side of a square is increased by 3 feet. If the perimeter of the square is now 96 feet, what were the original side lengths of the square?
21 feet
Calculate the Mean and MAD of the data.
19, 20, 20, 21, 22, 25, 26, 27
Mean = 22.5
MAD = 2.625
What is the formula for area of a semicircle?
A=1/2pir2