Ratio / Proportions
What is the equation for a proportional relationship?
y=rx
-13 + 5
-8
3(x + 4)
3x+12
If the diameter of a circle is 10, what is the radius?
5
What is the likelihood of an ant calling your cell phone?
impossible
How do you find r, the constant of proportionality?
y-value divided an x-value
7 - (-3)
10
2x - 5 - 4x
-2x - 5
Find the volume of a prism with a length of 8 cm and width of 4 cm and height of 2 cm.
64 cm3
In a bag there are 4 red marbles, 6 green marbles, and 1 blue marble. What is the probability of pulling out a red marble?
4/11
A pack of 12 pens cost $5.16. How much was it per pen?
$0.43
If Kara runs 2/5 of a race, what percent is that?
40%
If you are solving an inequality, when would you reverse the sign?
divide by a negative
multiply by a negative
Find the area of a triangle with a height of 4cm and a base of 3cm.
6 cm2
What do the mean, median, and mode tell you about a set of data?
Where it is centered.
What is the unit price of the best buy?
1 oz bag of doritos for $1
6 oz bag of doritos for $1.89
15 oz bag of doritos for $2.69
$0.18 per ounce
What is 6/8 written as a decimal?
0.75
2x + 6 = -12
x = -9
The number of square units needed to cover all the faces of a three-dimensional object is called what?
surface area
What is the median of this data?
100, 50, 30, 100, 20
What is 50?
Kylie earned $30 for babysitting for 6 hours. At this rate, how much will she earn for babysitting 8 hours?
$40
At the store, Jan bought 1.25 pounds of roast beef, 2 pounds of ham, and 0.8 pounds of turkey. How many pounds of deli meat did Jan buy in all?
4.05 pounds
-2(x - 3) + 4
= -2x + 6 + 4
= -2x+10
What is the area circle whose diameter is 6?
28.27
What is the mean of this data?
100, 50, 30, 100, 20
60