Integers
Absolute Value
Fr/Deci/%
Personal Finance
Pythagorus
100
What a bad thing happens to a bad person, that's GOOD.
Just a way to remember (-)*(-)=(+)
100
5
/-5/
100
ratios
Fractions, decimals and percents are all _________.
100
Regular interest - not compounded
A=prt
The Amount you get is the Principal times the interest Rate
100
...because beans cause flatulence.
Why were the Pythagoreans forbidden from eating beans?
200
Is the answer to this going to be neg or pos?
(x/-y)*-z
pos
200
...distance from zero
WHt does absolute value of any number measure?
200
Name 5 benchmark fraction/decimal percents.
1/2 - .5 - 50%
1/4 - .25 - 25%
1/5 - .2 - 20%
1/8 - .125 - 12.5%
1/10 - .1 - 10%
200
Compound interest
When the principal plus the interest earned in reinvested over and over.
200
...because he 'believed in' irrational numbers.
Why did the Pythagoreans drown Hippasus?
300
Is this answer going to be odd or even?
-1(-7*-3/-2)
Positive
300
...distance between 2 numbers on the number line.
What does the absolute value of x-y tell us?
300
Give an example of using benchmark percents to calcuate the 15% tip on a 70.00 dinner bill.
10% is 7.00 (1/10 of 70)
5% is 3.50 (half of the10%)
10.50 is the tip.
300
Explain this graph. Include what we see here and the math behind it. Include why this is important for specifically young people.
This graph shows exponential growth. To generate this data you need to use an exponent. This is important for young people because the even an extra few years of investments makes for much bigger returns for retirement.
300
Because you cannot measure a shape (or any distance) with a negative number.
Why didn't the Pythagoreans want to know about negative numbers?
400
Is the answer to this going to be neg or pos?
-x^4
Negative
400
T or F -
/2-5/=/5-2/
True -
400
What is a mixed number? How do you turn it into an improper fraction?
A mixed number is a value with a whole number and a fraction together - 1 and 2/3
To make an improper fraction, multiply 3x1 and add 2 - you get 5
Put 5 in the numerator and the originak 3 in the denominator to get 5/3
400
$B$31
How do you maintain original cel reference in Excel? (The dollar signs lock in the cell reference)
400
...because Pythagoreans believed that that nature is governed by ratios.
Why did the Pythagoreans disregard zero and irrational numbers?
500
Is this (-x)^5 the same as -x^5? Why? Why not?
No.
When the neg base is in parenthesis it looks like this: -x*-x*-x*-x*-x
When the negative base is not in parenthesis it looks like this: -1*x*x*x*x*x
500
Prove the statement above.
/2-5/=/5-2/
/-3/=/3/
3=3
500
This table shows the Canadian male population - ages 15-29 from 1942-1945. If the total population of Canadian males 15-19 years old was 1,585,000 in 1942, what percent of Canadian males between the ages 15 and 29 presumably died during WW2? Name the steps involved in solving this problem using equivalent ratios.
1. Set up equal ratios - Put 2,428,000 (total population in 1942) in the denominator of one ratio and 100 in the denominator of the other ratio.
2. Now find the number presumably dead as a result of WWII. Find the difference between the population in 1942 and 1945 and put that number over the total population.
3. Solve the ratio to find the %. Use cross multiply method or find the factor method.
500
A collection of data that shows me how, over time, I pay of my debt (like a mortgage)
What is an amortization table?
500
These are Pythagorean triples.
What is
-1,1,square root of 2
-2,2,2 times the square root of 2
-the ratio of the sides of any right angle triangle