I am going to do the Scribe post for Thursday because Caitlin was sick.
On Thursday we started by doing what we always start with.Number Of The Day Thursday's number was 1247.936
On Thursday we had a test about probability. Here are the answers: 1.True 6. A 11.C 16.D2.False 7. D 12.C3.False 8.D 13.B4.False 9.D 14.A5.True 10.B 15.C
17.Favourable Outcome 18.Outcome 19.Tree Diagram and Probability Chart or Table 20.One Half 21.Tree Diagram 22. 1/25 23.Independent events
24.B 29. 25.A 26.D 27.E 30.They have an equal amount of winning. 28.C
After we did the test we copied some notes about probability. This is what they said(or at least what I wrote. (= ). More Probability P(Rolling Prime Number) with a regular die.
P(Rolling Prime Number)= Favourable outcome --------------------------- Possible outcome
P(Rolling Prime Number)= 3/6 we always have to simplify so 3/6is 1/2, 50% and,1:2
Find the probability of rolling two sixes in a row with a regular die. You need to use a probability tree to solve this problem.
P(two sixes in a row)= favourable outcome ---------------------------- possible outcome _ P(two sixes in a row)=1/36,2.78, 1:36 Independent Event- The outcome of one event has no effect on the outcome of another event.
Sample Space- All possible outcomes of an experiment. Tree Diagram-Diagram used to organize outcomes
Find The possibility of landing a coin on HEADS, and rolling an ODD number.
P(odd and heads) = favourable outcome ---------------------------- possible outcome P(odd and heads)=1/4,1:4,25%
I know that the font is too big and messed up but i don't know how to fix it.So im just going to post it like this.
For the next Scribe Post i pick Jex M. But if someone didn't do the Scribe Post yet you should tell me.
Thank you for checking my scribe please leave a Comment.
Here are some of the exercises that we did during class:
a) Choose a student from grade 7 and choose a student from grade 8.
Are these choices DEPENDANTor INDEPENDENT on each other? They are independent. Because the person you choose from grade 7 has no effect on the person you choose from grade 8. Therefore they are independent.
b) Choose one marble from a bag, then without replacing it, choose a second marble from the same bag.
Are these choices dependant or independent on each other? They are dependant because once you have chosen one marble from the bag, you have oneless marble to chose from when you pick your second one. They have an effect on each other, therefore they dependant. When figuring out if the choices you are making are dependant or independent on each other, the question you should as yourself is:DOES THE FIRST THING I DO, CHANGE THE SECOND THING I DO?
If the answer is YES, that means that they are DEPENDANT. If the answer is NO, that means that they are INDEPENDENT.
HOMEWORK: Make sure you know how to do a tree diagram, and a chart to find the sample space of probability problems.
Make sure that number of the day is finished: today's number was 7835.621
Don't forget TLE tomorrow!
(Please leave your comments and don't be afraid to point out any mistakes I have made so that next time I can do better!)
This math class we did number of the day, probability test , and Mr. Isfeld taught us more about probability
This are the questions of the math test and their answers.
True/False
1. There is an equal probability of picking a red card or picking a black card from a full deck of 52 cards. Answer: true.
2. Using a six-sided die, the probability of rolling an even number is 1:3. Answer: false.
3. Using a six sided die the probability of rolling a 5 or a 6 is 1:2. Answer: false.
4. If there are fewer "favourable outcomes" the probability increases. Answer: false.
5. The formula for determining probability is = all outcomes over favourable outcomes Answer: false.
Multiple Choice
6. The probability that an event happens is 4:12 what is the probability that the event will not happen. Answer: 8:12.
7. What is the probability of drawing a red face card ( i.e., king, queen, or jack ) from a full deck of playing cards?. Answer: 6:52.
8. If you spin this spinner 30 times, how many times might you expect it to land on red?
Answer: 10 times.
9. There are 14 marbles in a bag: 4 red, 4 orange, 5 green, and 1 blue. You take out one marble out of the bag. What is the probability of getting a red or a blue marble? Answer: 5: 14.
10. Each letter of the word PROBABILITY is written on a separate card and placed in a bag. Fareshta draws one card from the bag what is the probability of her drawing a B? Answer: 2:11.
11. A _________ is a successful result in a probability experiment. Answer: favourable outcome
12. The expression "50-50 chance" means a probability of _______ percent. Answer: 50%.
This is an example of probability which Mr Isfeld taught us more about a while ago.
What is the probability of hitting heads while flipping a coin and rolling 3 on a normal six sided die.
Today in Math, we did "Number Of The Day" as usual. Today's Number of the Day is 9876.123.
Today we're in a new unit. Our next unit is called "Probability". Probability is the likelihood or chance of an event occurring.
1. Favourable Outcomes means what we want to happen.
Possible Outcomes means what might happen.
Probability can be expressed as a Ratio, Fraction, or Percent.
Example: Ratio Farction Percent 1:2 1/3 40%
More Types of Probability:
Earth reaching Absolute zero! This is an example of Impossible Outcome or event.
Impossible Outcome mean is when you are sure that event is not gonna happen.
People will always watch television whenever they're bored. This is an example of Certain Outcome or event.
We might find aliens in the future! If your Not sure ofsomething.
Homework:
Put a letter on top of the number line where you think it would go.
What is the probability...
A. ...flipping a coin and landing on heads?
B. ...with 1 normal six sided die, you roll an 8?
C. ...a bag contains 8 red markers and you reach into the bag and pull out 1 red marker?
D. You spin a spinner with four equal sections marked chocolate, fruit, yogurt and ice cream. What is the probability of the pointer stopping on the fruit?
E. A bag contains letters, A, B, C, D, E, F, G, H. What is the probability that you can pull out the letter H?
F. A bag has 3 gold marbles and 1 silver marble. What is the probability that you can pull out the silver marble?
G. What is the probability that the next baby born in Winnipeg is a boy?
Probability of spinning A.
Probability of spinning a vowel.
Probability of spinning Q.
I think this was homework too.
Discover the value of each shapes. The total weight is 77.
P.S.
Sorry because I didn't do the Friday's blog because I have Tonsilitis.
I choose Laura for the next scribe post. Thank you for checking my scribe please leave a comment.
There are some eg. of algebra but there are alot more in different ways to do it.
In algebra you should always have the = sign in a line and do the verify.
some stuff from the math links are,
#3. d-27=15 d-27+27=15+27 d=42
In the book it said to just do the question or solve it, in the math links book you don't always have to do the verify (you should do it on test or for other stuff).
Today in math class we started of with number of the day, as usual. The number of the day is8394.162. Make sure you do number of the day everyday if you do not finish in class.
Then After that Mr.Isfeld told us to do math links textbooks on page 398 to 400. It was mostly about Algebra and mental math. If you do not know already here are some examples of how to do an algebraic question :
10. There are two more than twice as many dogs as cats in the vet. If there are six cats, how many dogs are in the vet? Show all of your work including the equation and verifying and answer in sentence.
Well, today in class we did number of the day. Then we had to do these algabra questions when we were finished with the number of the day. These were those questions with the answers;
After we did those questions, we did some other questions, harder questions. First Mr. Isfeld wanted to show us how to answer them,
The question looked like this; 59=5x+6x+4
The first step is to, combine the 5x and 6x to get 11x then your question will now look like this,
59=11x+4
Then from there, you subtract 4 from both sides, and now it looks like this,
55=11x
Now this last part is easy; 11x/11=x 55/11=5 So x=5,
Now you verify, 59=5x+6x+4 59=5(5)+6(5)+4 59=25+30+4 59=59
THERE I HOPE YOU UNDERSTOOD WHAT I JUST TAUGHT ! I PICK ELVIN TO DO THE NEXT SCRIBEPOST !
P.S. My computer is different then most, and i didnt have time to change the color on my other computer, so maybe next time I can make a better scribepost with way more color, and better designs...
Todayinmathwe had ourterm test , we also corrected it . The test was on things we learned this term and some things we learned last term . We got to sort of correct homework from yesterday . Which was .. : Write an equation and solve it, for the following statement . Daylon talked for 45 minutes during class , how many minutes did he work ?
Today in math we did number of the day. The number for today is 7214.586. We also did our provincial folders. After Mr. Isfeld checked our number of the day. In our provincial folder this is what we did so far Ordering decimals, ComparingFractions, Ordering Fractions, & more.
This is what we need to study for our test including Order decimals, Algebra, ordering pictures and the newest one that we are studying is about constructing a pattern.
Our Homework
Write an algebraic equation and solve it for the following statement: Daylon talked for 45 minutes in today's class. How many minutes did he work
Make sure to study for the tomorrow about every single thing that we did.
In class to day we talked about patterns and the different charts.
In Class we had to draw the Numbers 4 and 5 of the pattern that Mr. isfeld gave us.
after that we had to describe how to draw this as if your telling someone on the phone. so we had to say like , number 1 is 2 vertical lines connected at the top, number 2 is 3 vertical lines connected by 1 horizontal line at the top. Number 3 is 4 vertical lines with one horizontal line connecting them at the top. Number 4 is 5 vertical lines connected by one horizontal line at the top. The last number 5 is 6 vertical lines connected by one horizontal line and all pictures are level.
In class we also talked about how much vertical lines there would be if it was the 25 pattern. It ended up being 41 lines for the 25 pattern. When we did that we use two charts, the T chart and the horizontal chart.
On this cart it is like a coordinate grid but it is only quadrant 1. on this cart the y axis gos up by a consistent number so it doesn't just jump around it just gos up by 2. when you have a cart like this you always have a TITLE.
I Don't think we had any home work and i pick JEX>:) for next scribe post.
Today we did provincial folders: Mental mathematics
Today we did mental math, we got a worksheet with several questions that we had to solve in our heads for example:
- 50 x 40 = 2000
We also had to explain the steps we used to get the answer like:
- multiply 50 by 10, 4 times which equals 2000 - 50 x 10 (= 500) x10 (=1000) x10 (=1500) x 10 = 2000
Today's homework is:
Make algebraic equations for addition, subtraction, multiplication and division where the letter or variable equals six then solve and verify your own questions.
