Probability Powers
Probability of picking a red card from 5 red and 5 blue cards?
1/2
50%
Solve: x - 5 = 9
x = 14
Find the unit Rate: 24 miles in 3 hours
8 miles per hour
-4 x 3
-12
Area of a triangle with a base 8 and height 5
20 Square units
A spinner has 8 equal sections. 2 are purple. Probability of purple?
1/4
25%
Solve: 2x + 3 = 15
x = 6
y = 5x?
5
15 - (-5)
20
60 cubic units
Two coins are flipped. Probability of two heads?
Bonus: List the Sample Space
1/4
Heads Heads
Heads Tails
Tails Heads
Tails Tails
Solve: 4(x - 2) = 20
x = 7
Is the relationship proportional?
(2,4), (3,6), (4,8)
Bonus: If proportional what is the Constant?
Yes. The Constant is 2
-5(3 - 8)
25
Find angle formed by supplementary angles if one is 125°
55°
A bag has 5 red, 3 blue, and 2 green. Probability of picking blue and yellow?
3/10
30%
A phone plan charges $30 plus $5 per gigabytes. Write an equation
y= 5x + 30
3 tacos cost $7.50. How much do 11 tacos cost?
Bonus: What is the Constant?
$27.50
1 taco for $2.50
4 - 3(-5 + 2)
13
A circular garden has diameter 12. What is the Circumference?
12π 0r 37.68 units
True or False: Probability can be greater than 1.
Why?
False. Probability is based on the Part out of the Total.
2 (x - 4) + 6 = 18
x = 10
Explain how graphs show proportional relationships.
They form a straight line through the origin.
Explain why subtracting a negative changes to addition.
Opposite of opposite becomes positive
Removing anchors means it's going to be a positive change.
A pool is 12 m by 8 m by 2 m. How many cubic meters of water?
192 cubic meters