Term
| In a probability question, what does the term "and" mean? |
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Definition
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Term
| In a probability question, what does the term "or" mean? |
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Definition
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Term
| What is the formula for Combinations (probability)? |
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Definition
nCk = n!/k!(n-k)!
n = total number of things
k = number of slots to fill |
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Term
| how do you figure out the time it take 2 people to do something together? |
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Definition
(1/my time) + (1/your time) = (1/our time)
ex.
1/3 + 1/6 = 1/T
3/6 = 1/T
3T=6
T = 2 |
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Term
| What is the formula for percent increase? |
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Definition
| (difference between new and old)/(old) x 100 |
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Term
| What is the formula for simple interest? |
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Definition
I = prt
I= interest earned
p= money in the bank
r= interest rate
t= time |
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Term
| What is the formula for compound interest? |
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Definition
a = p (1 + i^n)
a= amount
p= money in the bank
i= effective rate
n = number of compounding periods |
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Term
| a negative base with an odd exponent will be _____ |
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Definition
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Term
| a negative base with an even exponent will be _____ |
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Definition
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Term
| what are the first 11 prime numbers? |
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Definition
| 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31 |
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Term
| How do you multiply fractions? |
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Definition
reduce
multiple the numerators together
multiply the denominators together |
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Term
| How do you divide fractions? |
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Definition
| multiply the fraction by it's reciprocal |
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Term
| what is the square of 11? |
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Definition
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Term
| what is the square of 12? |
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Definition
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Term
| what is the square of 13? |
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Definition
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Term
| what is the square of 14? |
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Definition
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Term
| what is the square of 15? |
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
| when is solving a linear inequality different from solving a linear equation? |
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Definition
| when you multiply or divide both sides by a negative number, then you must reverse the signs |
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Term
| when factoring, what are the 3 things to look for? |
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Definition
-common factors
-difference of squares
-simple trinomial |
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Term
| how do you solve for 2 unknowns? |
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Definition
| use the method of elimination: multiply both equations by whatever you need to so that when you ADD them together the terms disappear |
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Term
| what do the interior angles of a polygon add up to? |
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Definition
180(n-2)
n= number of interior angles |
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Term
| how do you find the range of what the third side of a triangle could be? |
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Definition
the triangle inequality
|b-c| < a< b+c |
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Term
| what are the pythagorean triples? |
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Definition
3,4,5
5,12,13
8, 15, 17
7, 24, 25 |
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Term
| how do you find the area of a sector of a circle? |
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Definition
| (central angle/360) x πr^2 |
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Term
| how do you find the length of an arc? |
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Definition
| (central angle/360) x 2πr |
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Term
| how you you find the volume of a cylinder? |
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Definition
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Term
| how you you find the surface area of a cylinder? |
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Definition
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Term
| how do you find the surface area of a rectangular solid? |
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Definition
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