SAT MATH Study Guide Complete With
Answers
\.quadratic formula - Answer- [-b ± √(b² - 4ac)] / (2a)
\.slope formula - Answer- (y₂- y₁) / (x₂- x₁)
\.integers - Answer- ..., -3, -2, -1, 0, 1, 2, 3, ...
\.rationals - Answer- fractions (anything expessable as a ratio of integers)
\.reals - Answer- integers, rationals, plus special #s (like √2 or pi)
\.order of opperations - Answer- PEMDAS (Parentheses / Exponents / Multiply / Divide / Add
/ Subtract)
\.Arithmetic Sequences - Answer- t₁, t₁+ d, t₁+2d, ...
\.Geometric Sequences - Answer- t₁, t₁· r, t₁· r², ...
\.Factors - Answer- ex. factors of 52 are 2, 4, 13, and 26
\.Multiples - Answer- ex. multiples of 20 are 40, 60, 80, 100, ...
, \.percentages - Answer- part = (percent / 100) x whole
\.average - Answer- average = sum of terms / number of terms
\.average speed - Answer- average speed = total distance / total time
\.sum - Answer- sum = average x (number of terms)
\.mode - Answer- mode = value in the list that appears most often
\.median - Answer- median = middle value in the list
\.fundamental counting principle - Answer- if an event can happen in N ways, and another,
independent event can happen in M ways, then both events together can happen in N x M
ways.
\.probability - Answer- probability = number of desired outcomes / number of total
outcomes
\.adding exponents - Answer- x^a · x^b = x^(a+b)
\.subtracting exponents - Answer- x^a / x^b = x^(a-b)
\.negative exponents - Answer- 1 / x^b = x^(-b)
Answers
\.quadratic formula - Answer- [-b ± √(b² - 4ac)] / (2a)
\.slope formula - Answer- (y₂- y₁) / (x₂- x₁)
\.integers - Answer- ..., -3, -2, -1, 0, 1, 2, 3, ...
\.rationals - Answer- fractions (anything expessable as a ratio of integers)
\.reals - Answer- integers, rationals, plus special #s (like √2 or pi)
\.order of opperations - Answer- PEMDAS (Parentheses / Exponents / Multiply / Divide / Add
/ Subtract)
\.Arithmetic Sequences - Answer- t₁, t₁+ d, t₁+2d, ...
\.Geometric Sequences - Answer- t₁, t₁· r, t₁· r², ...
\.Factors - Answer- ex. factors of 52 are 2, 4, 13, and 26
\.Multiples - Answer- ex. multiples of 20 are 40, 60, 80, 100, ...
, \.percentages - Answer- part = (percent / 100) x whole
\.average - Answer- average = sum of terms / number of terms
\.average speed - Answer- average speed = total distance / total time
\.sum - Answer- sum = average x (number of terms)
\.mode - Answer- mode = value in the list that appears most often
\.median - Answer- median = middle value in the list
\.fundamental counting principle - Answer- if an event can happen in N ways, and another,
independent event can happen in M ways, then both events together can happen in N x M
ways.
\.probability - Answer- probability = number of desired outcomes / number of total
outcomes
\.adding exponents - Answer- x^a · x^b = x^(a+b)
\.subtracting exponents - Answer- x^a / x^b = x^(a-b)
\.negative exponents - Answer- 1 / x^b = x^(-b)
