Bell Ringer3-11-11

Valdemar has a spinner with the numbers 1 through 5. He would like to increase the chances of the following events:• Spinning an even number• Spinning a number less than 4• Spinning the square root of 9

Valdemar decides to remove the 5 from the spinner.

Which statement best supports his reasoning?A. The number 5 takes up more space on the spinner.B. Spinning the number 5 has the greatest probability.C. The number 5 is the greatest number.D. Spinning the number 5 is not a desired event.

Explain why you did not choose the other three answer choices.

Valdemar has a spinner with the numbers 1 through 5. Valdemar would like to increase the chances of the following events:• Spinning an even number• Spinning a number less than 4• Spinning the square root of 9

Valdemar decides to remove the 5 from the spinner.

Which statement best supports his reasoning?A. The number 5 takes up more space on the spinner.

NO – Same chance as the others B. Spinning the number 5 has the greatest probability.

NO – Same as the others C. The number 5 is the greatest number.

TRUE – Would allow us to spin a number less than 4D. Spinning the number 5 is not a desired event.

TRUE – 5 has nothing to do with ANY of the criteria **Best Answer**

Quiz3-11-11

4 different cylinders are placed in a box. If a cylinder is randomly pulled from the box, what is the probability that the lateral surface area of the cylinder will be greater than 86 cm2?

cylinder 1: r = 2 cm; h = 3 cmcylinder 2: r = 2 cm; h = 4 cmcylinder 3: r = 3 cm; h = 4 cmcylinder 4: r = 3 cm; h = 5 cm

What is the probability of getting a surface area greater than 86 square centimeters?

I found the surface area of each cylinder by multiplying the pi by 2 and multiplying that by the radius and height. I counted the number of areas greater than 86. I wrote my probability placing the number of areas greater than 86 over the total number of areas. I reduced.

4 different cylinders are placed in a box. If a cylinder is randomly pulled from the box, what is the probability that the lateral surface area of the cylinder will be greater than 86 cm2?

There is a 25% chance of pulling a cylinder with a surface area greater than 86 square centimeters.

cylinder 1: r = 2 cm; h = 3 cmcylinder 2: r = 2 cm; h = 4 cmcylinder 3: r = 3 cm; h = 4 cmcylinder 4: r = 3 cm; h = 5 cmLateral surface area

268.37)3)(2)(14.3(2:1 cmScylinder

224.50)4)(2)(14.3(2:2 cmScylinder

236.75)4)(3)(14.3(2:3 cmScylinder

22.94)5)(3)(14.3(2:4 cmScylinder

%254

1)86( 2 orcmSP

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 StarsFriday

To cover his bulletin board, Mr. Adams needs 1½ yards of fabric and 6¼ yards of trim. If the fabric costs $2.79 per yard and the trim costs $1.19 per yard, which equation can be used to find c, the total cost of covering the bulletin board?

A. c = (2.79 + 1.5) + (1.19 + 6.25)

B. c = (2.79 · 1.5) + (1.19 · 6.25)

C. c = (2.79 + 1.5) − (1.19 + 6.25)

D. c = (2.79 · 1.5) − (1.19 · 6.25)

Class Work

Probability & Statistics Smarties Activity

Answer the questions, pertaining to your package of smarties.

Create the graphs.Do NOT eat the candy until AFTER

you have gathered the data.