ScribePost, March 9/09

Today we did our Number of the day which is 7362.415 and It's HOMEWORK!!!




Then we did....





MORE PROBABILITY





P(rolling a prime number) with a regular die










P(rolling prime) = favourable
_________
possible


= 3
____ =__1_ 1:2 or 25%

6 2

Finding the probability of rolling two sixes in a row with a regular die.

INDEPENDENT- the outcome of one event has no effect on the outcome of another event.

SAMPLE SPACES- all possible outcome of an experiments.

TREE DIAGRAM: A diagram used to organize outcome contains a branch possible outcomes of an event.

- PROBABILITY of landing a coin on heads and rolling an odd number.

coin flip

A. Trendy , Shana, and Tracie are on Team A. Jordan Micheal, terrance, Sean and Sani are on Team B.

This one we have to solve this problem by using a diagram to show all the possible outcomes if the coach assigns each on Team B defend against a player on Team A

PLEASE COMMENT ME .... if there is any mistakes just Comment. ****

and the Next Scribe post .................. Damian B

scribepost for march 5

today in math we did number of the day. The number was 9965.267 you and if did not finish it it was homework as always.

after that we did our test on probability since it was Thursday.

if you finished the test before it was time you had to do this:

we did not get to go over it.

after we did the test we went over it and then we went over the homework from yesterday.

then Mr. Isfeld gave us a question to do:

what is the probability of landing a coin on heads and rolling a 3 with a normal die

to find the answer you need a:

probability tree/diagram

H

/ / / / / / /

1 2 3 4 5 6

T

/ / / / / /

1 2 3 4 5 6

p(H and 3)= favourable outcomes/possible outcomes

p(H and 3)=1/12 or 1:12 or 8.3%

HW

what is the probability of rolling a 2 on 1 die and drawing the out of a bag containing the letters S N O W

OLD PRACTICE

FIND 72% OF 120

SORRY FOR THE LATE SCRIBE AND FOR NO VIDEO MY COMPUTER WAS ACTING UP

THANKS FOR READING MY SCRIBE OH AND DON'T FORGET TO LEAVE A COMMENT AND I CHOOSE

ELIZABETH *******FOR THE NEXT SCRIBE POST

Scribe Post for March 4, 2009

Today in Class we did number of the day. The number is 7791.692.

Remember it's for homework everyday !





Then we continued on our Probability notes.

Outcome- is the possible result of a probability experiment.




Favourable outcome- is a succesful result in a probability experiment.

eg.

The tiles S, N, O, W are placed in a bag.

1. What is the probability of drawing a letter "W" from the bag?
Another way to write the same question is P(W).

P(W) = Favourable outcomes
Possible Outcomes

= 1/4 (fraction)

= 25% (percent)
= 1:4 (ratio)




2. P(S or O) = favourable

possible

= 2/4 - 1/2

= 50%
= 1:2



3. P(consonant) = favourable

possible

= 3/4
= 75%
= 3:4





4. P(B) = favourable

possible

= 0/4

= 0%




A bag contains 10 marbles, show the probability of the following event as a fraction, percent and ratio.

a. P(red marbles) = 6/10 - 3/5
= 60%
= 3:5

b. P(red, blue or green marbles) = 10/10 - 1/1
=100%
=1:1

c. P(not a red marble) = 4/10 - 2/5
= 40%
= 2:5


The letters M, O, U, N, T, A, I, N are in a bag.
a. P(N) = 2/8 - 1/4
= 25%
= 1:4

b. P(consonant) = 4/8 - 1/2
= 50%
= 1:2

c. P(letter) = 8/8 - 1/1
= 100%
= 1:1

What is the probability of flipping a coin heads and rolling a 6 ?

Dont Forget: Please comment on what i did bad or good.
(P.S. sorry if it was plain, this is just my first time)

I choose Charity for the next scribepost !

Today in math we did Number of the day, Algebra Test and Balancing Act.

Number of the Day:
The number is 7298.154. We had to divide, multiply, write in words etc. Remember that this is homework everyday.

Algebra Test:
We had to answer True/False, Multiple Choice, Completion, Matching, Short Answer And Problem. This was out of 30 !

Examples

True/False-
1.Multiplication and Division are opposite operations-T
2. Given the equation a+6=14, the variable of a is 12- F

Multiple Choice-
1. m+5=9, value of m is?a. m=4 b. m= 5 c. m= 9 d. m=14 answer- A
2. 21=3y, value of y is?a. y=3 b.y= 7 c.y=24 d.y=13 answer-B

Completion-
1. p+4= 11, value of p is?- 7
2. q-3=5, value of q is ?-8

Matching-
a. equation b.expression
1. 6m+5n= b
2. d/4= 24=a

Short answer-
1.The school soccer team has played over 17 games with no ties and 4 losses. Use the variable w to write an equation to represent the number of games won by the team.
answer: 17-4=w
7-4=13
13=13

Problem-
Brandon is saving for a mountain bike that costs $450. He knows that he needs to triple the money he has saved so far before he can afford his new bike. How much money has Brandon saved so far?
Answer- Brandon has saved $150.000.

Balancing Act:
The total was 77. If you haven't finished this at math class then it's for homework !


I choose Sierra for the next scribe post.
Please read and check my post if i had any mistakes !

Website:http://www.mathleague.com/help/algebra/algebra.htm

subscribe post for feb.26

today in class we did number of the day, if you weren't here or forgot to write it down the number is 7923.468. Remember this is for homework everyday.In number of the day we do division, multiplication,fractions and more! Also we did not do the test because we had an assembly.

Then we have to do a balancing act. The total of this balancing act is 75. If didn't finish it's for home work.

When we were done the balancing act he gave us this question.

Find a number that is two larger then six times a number thats is half as big as seven. Write an equation and solve and verify.


Sorry for the late subscribepost.
Thanks for reading my subscribe post, and tell me if are any mistakes.
I choose Elijah for the next subscribe post.

Scribe Post for February 25. 2009

Today in Math class we did Number of the Day, if you weren't here or you forgot to write it down the number was 2691.543. This is homework everyday. Sometimes in number of the day we divide, multiply or sometimes even make fractions often using the digits from the number of the day.

Then we continued our Math Links on pages 398- 401. A reminder that our quiz tomorrow( It's a Thursday, there's no surprise) is going to have similar questions to these pages. Mr. Isfeld said it would be fine if I only gave examples, instead of every single question.

Here are some examples:

Draw a balance to show the equation 12=3+M, if M represents an unknown mass.

B) What total mass should be on each side of the balance?

C) Solve the equation to determine the unknown mass.

These aren't in order, they're only EXAMPLES!!!

The average life span of a grizzly bear is 25 years. This is 15 more years than the average life span of a cougar.

A)What equation will model this situation?

B) What is the average life span of a cougar?

At the Commonwealth Games in Australia, Canada won 86 medals. This was 24 fewer medals than England won.

A) Write an equation to model this situation.

B) How many medals did England win?

Shawn received $5 change from $20 when he bought some binders. how many binders did he buy if each binder costs $3.00? Write an equation, then show how you solved it.

Please comment and tell me if there was any mistakes, i choose Sharmaine for the next scriber.

Scribe Post for February 24/09.

Today we did number of the day. The number was 8394.162. As you probably already know it is homework every day.

In class we did work in the math links text book, we did pages 398 to 400. It was mostly algebra and some scales. Here are some examples:

1.Wes is solving a problem. He models it to start

2. Use mental math to solve each equation. Explain your thought.

A) Z+7=42 B) G-2=5 C) N-4=8 D) 9=K+6

3. Ryan has a bag of oranges. His friends eat ten oranges. If there are 2 oranges left in the bag, how many oranges were there to start with?

A)Model the situation using cups and counters or sketch of a balance.

B)Write an equation to represent your model.

C) Solve by inspection(inspection means mental math).

These are some examples(not in order).

Sorry if there was no links and videos, please comment and tell me if there was any mistakes.

I choose Dakota for the next scribe post.