Category Archives: Math 9

Math 9 Final Reivew 2017

Exponents

The difference between brackets and no brackets.

-26=-64    -(2)(2)(2)(2)(2)(2)=-64

(-2)6=64    (-2)(-2)(-2)(-2)(-2)(-2)=64

If the negative is inside the brackets and the exponent is a even number. The answer then will be positive.

If the negative is outside the brackets and the exponent is even  or odd the answer is negative.

Two rabbits doubles every hour. How many rabbits will there be after 6 hours?

The answer is 64 because 2×2=4×2=8×2=16×2=32×2=64

11.4 Misleading Statistics

For question 3

Fake accounts would effect me because  you really don’t know if this person is real.  The fake people can spread bad and fake information  and if the information  is bad or disrespectful everyone will  go at the person  who  actually has the name that the fake person has put on their account. Fake people might try to target younger people because they know that older adults can figure out that they are fake. Fake people can also  try to  take your credit card number and bank information  if you are a fried of the actual name that they put on their social  media page.

11.3 Probability in Society

http://worldversus.com/Cocacola-vs-Pepsi

Coca-Cola had 14,490 people vote- %67.28

Pepsi had 7046 people vote- %32.72

This vote is voluntary response because they have a vote and ask people to participate. The people have a choice whether to vote or not to  vote so it is a voluntary response.  The website has many other votes that people can chose to participate in.

 

Math Review

My Math Review Of:

Rational Numbers (Number Lines, Decimals, Fractions, Square Roots, Order of Operations)

Exponents (Exponent Laws, Evaluating, Word Problems)

Polynomials (Vocabulary, Like Terms, Adding/Subtracting, Multiplying/Dividing)

http://www.showme.com/sh/?h=H3TDSka

http://www.showme.com/sh/?h=ejkPaOe

http://www.showme.com/sh/?

h=2Q1bi0ehttp://www.showme.com/sh/?h=Q6Inpei

http://www.showme.com/sh/?h=iBxyYvw

http://www.showme.com/sh/?h=KVgmRYO

http://www.showme.com/sh/?h=BSrC4eG

Exponents

Question 1:What is the difference between 2^3 and 3^2 ?

The difference betweenthe two questions is that 2^3 =8 and 3^2 =9

Question 2: what is the difference between (-2)^4 and -2^4

The difference between the two questions is  that the one in brackets would be positive 16 and the one without the brackets would be -16

Adding and Subtracting Integers

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A and E are Equivalent:     In E the subtraction symbol cancels out the negative symbol.

B and F are Equivalent:       -5 -11 is the same as saying -5+(-11)

C and G are Equivalent:    In C two negatives equal a positive  so it really is just -5+11

Some of the statements have the same answer even though the numbers in the equation are arranged differently.That is because the positive/negative numbers have an impact on if it is positive or negative sum. Also the addition and subtraction symbols can determine if your answer is  negative or positive.

One of the things that I learned is that you can have the same answer for two different looking equations.

Some things that students should remember is that when you subtract a negative integer that integer becomes positive. When you add a negative integer to a positive integer the sum is negative.

Fraser Olson