Stats/Prob
The sum of the numbers divided by the number of values in a data set.
Evaluate 10y+7 when y = 3 1/2
42
Staples sells a case of 16 notebooks for $42. What is the cost per notebook?
$2.63
Which pair of ratios does not demonstrate a proportional relationship?
c
Which pair of angles are supplementary?
(1) 42° and 48° (3) 250° and 110°
(2) 144° and 36° (4) 58° and 26°
2
A bag of marbles contains 5 blue, 3 yellow, and 2 pink. What is the probability of picking a yellow marble?
3/10
Which inequality is represented on the graph?
x< -1
Put the following numbers in order from least to greatest
-1.4, 3 1/4, 6/5, -5/4
-1.4, -5/4, 6/5, 3 1/4
What is the constant of proportionality?
5
<1 and <3 are an example of ________ angles
vertical
What is the interquartile range?
15
Solve the following equation for x:
2(x-2)+3x=-29
x=-5
An escalator travels directly up 24 floors in 80 seconds. How many floors can this escalator travel up in 120 seconds?
36
What is the constant of proportionality?
6
Find the area of a circle whose radius is 5 inches. Round your answer to the nearest tenths.
31.4
What percent of students scored between 55 and 70?
25%
Bella wants to join a gym. There is a one time gee of $19 and each month of membership costs $12. If Bella pays $120, write an equation to determine how long her membership will last.
19+12x=120
There are 250 sixth graders and 750 seventh graders in a school. What percent of the school is made up of sixth graders?
25%
What is the equation of this proportional relationship?
y=2x
Nemo's fish tank can hold 420 cubic inches of water. Find the width of the tank.
7
Meg reaches into a bowl with 3 lemon, 4 cherry, 3 lime, and 2 grape candies. She randomly picks a candy, eats it, and pick another. What is the probability she will pick a lemon and another lemon?
1/22
Solve the following inequality:
-4x-6<-38
x>8
A jacket usually sells for $175 is on sale for $140. What is the percent of discount for the sale price?
20%
Explain what the point (30, 60) represents in the context of the problem.
30 guests cost $60
Find the area of the shaded region, to the nearest tenth.
21.5