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Lesson 7.3 Compound Events
Directions: Read and answer each question in the boxes provided.
4. You forgot the last two digits of your cell phone passcode.
What is the probability that you randomly choose the correct digits?
a.
+
1
2
5
8
0
3
6
9
b.
7
Suppose you remember that both digits are even. How does this
change the probability that you choose the correct digits?
Bonus
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ick to add speaker notes

it is true

step-by-step explanation:

all the combinations add up i used   calculator

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

answer: 8

step-by-step explanation: