bell ringer 3-10-11 a bag contains 6 red marbles, 5 blue marbles, 3 green marbles, and 1 yellow...

Bell Ringer3-10-11

A bag contains 6 red marbles, 5 blue marbles, 3 green marbles, and 1 yellow marble.

1. What is the probability that a marble chosen at random will be blue?

2. What is the probability that a marble chosen at random will be yellow?

3. What is the probability that a marble chosen at random will not be red?

4. If a marble is pulled and replaced 100 times, how many red marbles can we expect to get?

5. Calculate the mode.6. Calculate the range.

A bag contains 6 red marbles, 5 blue marbles, 3 green marbles, and 1 yellow marble.

1. What is the probability that a marble chosen at random will be blue?

2. What is the probability that a marble chosen at random will be yellow?

3. What is the probability that a marble chosen at random will not be red?

%333

1

15

5)( orblueP

15

1)( yellowP

%605

3

15

9)Re( ordNotP

A bag contains 6 red marbles, 5 blue marbles, 3 green marbles, and 1 yellow marble.

4. If a marble is pulled and replaced 100 times, how many red marbles can we expect to get?

5. Calculate the mode.

6. Calculate the range.

total

xred

total

red

10015

6

yellowgreenbluered 1;3;5;6

dMode Re

marbles516

100

40

205

202 red

Quiz3-11-11

Line segment d is a diagonal in each polygon shown below. Which drawing shows enough

information to find the length of line segment d?

Which drawing can be used to find the length of the diagonal?

I know that diagonals are associated with a hypotenuse. In order to solve for a hypotenuse, there must be a right triangle. I analyzed each drawing to see which one has a diagonal with a right triangle.

Line segment d is a diagonal in each polygon shown below. Which drawing shows enough information to find the length of line segment d?

Drawing H can be used to find the length of the diagonal.

DiagonalHypotenuseLocation of d in each choice

Diagonals = Hypotenuse

To find the hypotenuse, the Pythagorean Theorem can be Used. To use the Theorem, there mustBe a right triangle.

Drawing H has the diagonal with aRight triangle.

Speed Test1. Get out a dry erase marker.2. You have 1 minute to complete as many problems as you can.3.We will grade in 1 minute.4. Graph your results. Keep the graph in your notebook.5. We will do this every day.

Problem of the Week & Word Problem

#5-11. You have 5 minutes to work on the

problem of the week and word problem.

2. The problem of the week must follow the Read, Think, Solve, Justify format.

3. When you are finished, turn them in.4. They are due Friday.

Reach for the StarsThursday

A ladder that is 13 feet long leans against a building. The bottom of the ladder is 5 feet away from the base of the building. How far up the side of the building does the ladder reach?

A. 18 ftB. 16 ftC. 12 ftD. 8 ft

Class Work: Probability

You need your notes. Title the notes: Probability

I will check your work at the end of class.

ProbabilityI have 4 red marbles, 2 blue

marbles, 5 yellow marbles, and 3 green marbles in one bag. You will draw one at a time.

1.What is the probability of drawing two blue marbles (After drawing, replace the marble back in the bag)

49

1

196

4

14

2

14

2)2( blueP

49

1

7

1

7

1)2( blueP

ProbabilityI have 4 red marbles, 2 blue

marbles, 5 yellow marbles, and 3 green marbles in one bag. You will draw one at a time.

2. What is the probability of drawing two blue marbles (After drawing, do not replace the marble back in the bag)

91

1

182

2

13

1

14

2)2( blueP

91

1

13

1

7

1)2( blueP

Probability

G

What is P(flipping a tail and not spinning R)?

G

Y

Y

R

R

R

B quarter

16

5

8

5

2

1)( TailNotRP

16 52 42 7 16

3 77 42 4

1. What is P(two digit number and star)?

2. What is the probability that you will not draw an odd number and not draw an arrow?

6

1

120

20

12

4

10

5)&2( StardigitP

20

9

120

54

12

9

10

6)&( NotArrowNotOddP

Guess that Price!!!!Winning a Car: Price of car: # 1-6You are going to roll the die 5 times. After you

roll, you will be told if the number you rolled is the # in the price of a car. If it is not, you must decide if the next number is higher or lower.

Roll 1: What is the P(price > #)?Roll 2: What is the P(price > #)?Roll 3 What is the P(price < #)?Roll 4 What is the P(price < #)?Roll 5 What is the P(price < #)?Write your answers on your paper.

Deal or No Deal?As a group, you will choose a briefcase.We will go through the game.Each time the banker makes a deal, we

will answer these probability questions:

What is the P(our $ in case > banker’s offer)?What is the P(our $ in case < banker’s offer)?

You will write your answers on a sheet of paper. The paper is due by the end of class.