SAT Math Q&A Bundle

When does the sign change in an inequality?When multiplying or dividing both sides with a negative number Number of solutionsone solution: x/y = a no solution: a = b infinite solutions: a = a What is slope intercept form? Identify what each variable means.y= mx + b m = slope (or "rate"...

What is the ratio of 1/5 to 5?A) 1/25 When x is divided by 7, the remainder is a prime number. Which of the following could be x?C) 31 If 1/5m=15+3p, then 4/5m=C) 60+12p In the figure above, square ABCD has been divided into 4 smaller squares. What is the ratio of the number of squares to t...

Area formula for a rectangle A=lw Area formula for a triangle A=1/2bh (height is from tip to base, altitude) Pythagorean Theorem a²+b²=c² Volume formula of a rectangular prism V = lwh Volume Formula of Cylinder V = π r² h Volume Formula of Sphere V = (4/3) π r^3 Volume Formul...

sin-cos identity: sinx = cos(90-x) sin-cos identity: cosx = sin(90-x) 90º, pi/2 (0,1) 180º pi radians 30º, pi/6 (√3/2, 1/2) 45º, pi/4 (√2/2, √2/2) 60º, pi/3 (1/2, √3/2) 30, 60, 90 triangle x, x√3, 2x 45, 45, 90 triangle x, x, x√2 Circumference 2(pi)r or (p...

Rate Of Change Formula Y2-Y1/X2-X1 Quadratic Formula X = -B ± √(B² - 4ac)/2a Exponential Growth And Decay Formula F(X)= F(0)(1+R)^T Complementary Angles Theorem If Two Sides Of Two Adjacent Acute Angles Are Perpendicular, Then The Angles Are Complementary. Formula Of A Circle (X-H)²...

Probability Successes ------ Attempts or Part ----- Whole After you read each problem, what should you do? 1 Write down the numbers/variables/equations 2 Find the hidden information When do you Plug-In? when the problem is mostly variables. What does "of" mean in math? Li...

Positive + positive =Positive Positive + negative Use the sign of the larger value Negative + positive Use the sign of the larger value Positive times positive =Positive Positive times negative =Negative Negative times positive =Negative Negative times negative =Positive

A typical SAT has several word problems, covering... Almost every math topic for which you are responsible Word problems involving geometry can usually be solved just with arithmetic, but most of them... Require basic algebra To solve word problems algebraically, you must treat algebra as a......

(3^a)^2 is equal to 9^a (a^3)^3 times (a)^(-9) is equal to 1 Polynomial expression one or more terms with a coefficient, a variable base, and an exponent. Base of a polynomial has an exponent attached to it. Slope less than 1 y is less than x x^1 = x 3^1 = 3 x^0 = 1 x^m * x^n = ...

Quadratic Formula x = [-b ± √(b² - 4ac)] / (2a) Slope Formula (y₂- y₁) / (x₂- x₁) Integers ..., -3, -2, -1, 0, 1, 2, 3, ... Rationals fractions (anything expessable as a ratio of integers) Reals integers, rationals, plus special #s (like √2 or π) Order of Operations PEM...

Sample Size Sample size determination is the act of choosing the number of observations or replicates to include in a statistical sample. The BIGGER the sample size, the better the chance it will give ACCURATE results. Margin of Error Confidence interval, tells you how reliable your surveys are. ...

Function Equations --> f(x)= cx^2 + 30 and f(3)=12 What is value of f(-3)? When you get a function equation, take the other given equation and plug it into the function equation and solve for the variable that was not given. After solving the variable, plug in back into the original equation an...

2 (two) If x+y = -2, then x+y+4 = what? 15 (fifteen) If 3/5 the perimeter of an equilateral triangle is 9, what is its perimeter? 1.5 (1 1/2) Water flows into a 60-liter tank and fills one fourth of the tank in 10 minutes. What is the rate of flow in liters per minute? $1.12 In a restaurant...