Circles
Circles: the ratio between a circle's circumference and its radius
2pi
Equations: David buys 6 watermelons for every 2 cantaloupes. Which equation represents this scenario?
A. w=6c
B. c=2w
C. w=3c
D. c=6w
C. W=3c
Percentages: 350% of 24
84
Probability: A spinner has 8 equal sections numbered 1-8. What is the probability of spinning a number greater than 3?
5 out of 8
Proportional Relationships: two characteristics of a proportional relationship as shown on a graph
straight line through the origin
Geometry: the volume of a rectangular prism with a length 6 in., width 3 in., height of 100 in.
1,800 in3
Circles: The area of a circle is 36pi. What is the radius of this circle?
6
Equations: Solve this problem:
8+(9-2)*4-7
29
Percentages: Andrew's score as percentage if he got 9⁄12 questions correct on a math test.
75%
Probability: A spinner has 8 equal sections numbered 1-8. What is the sample space?
1, 2, 3, 4, 5, 6, 7, 8
Proportional Relationships: A car travels 240 miles on 12 gallons of gasoline. What is the unit rate?
20 miles per gallon
a straight line has 3 angles on it: one is 1080 and the other two are congruent. What is the measure of one of the congruent angles?
36 degrees
180-108 = 72
72 divided by 2 = 36
Circles: the radius of a circle whose circumference is 10pi cm.
5 cm
Equations: Solve this equation:
2x-7=19
13
Percentages: What is 23% of 80
18.4
Probability: A menu has 5 coffees, 3 pastries and 2 juices. How many different combinations of treats are there?
30
Proportional Relationships: Are 6/14 and 9/21 proportional?
yes
Geometry: Lola noticed that when 2 lines cross each other, the angles that are opposite each other have the same measure. What are these angles called?
vertical angles
Circles: the circumference of a circle with a radius of 5 cm.
31.4 cm.
Equations: Solve this equation.
1/2x+15=3
x=-24
Percentages: 15% of 65
9.75
Probability: Which event is possible, but unlikely?
a. pulling a blue jolly rancher out of a new bag b. getting wet in the rain without an umbrella c. flipping one fair coin and it landing heads up
a.
Proportional Relationships: A graph is one way to represent a proportional relationship. What are the 3 other ways?
(You created a poster like this.)
table of values
equation
words or real life situation
Geometry: Fatima says that in a right triangle, the other two angles are complementary. Is she correct? Why or why not?
Yes.
Complementary angles add up to 90 degrees, a right angle is 90 degrees, and the sum of all angles in a triangle is 180 degrees.
Circles: the area of a circle whose radius is 24 in. (2 decimal places)
1809.56 in2
Equations: Kai pays $75 per month for their phone, plus a one time fee of $100. What equation shows this situation?
y=75x + 100
Percentages: Dennis bought shoes on sale for 25% discount. If the shoes were originally $200, how much did Dennis save?
$50
Probability: the quotient when dividing the number of desired outcomes by the total trials (ex: you want to land on red on a spinner of red, green and yellow)
the relative frequency
Proportional Relationships: Lucia earns $12 (y) per hour (x) working at a sporting goods store. What is one possible point on the graph of this situation?
many many possible points
Geometry: the area of a triangle with a base of 7 units and a height of 8 units
28 units squared