1. The problem: You want to know the most important SAT math formulas. 2. Key formulas to remember for SAT math include: - **Algebra:** - Quadratic formula: $$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$$ - Slope of a line: $$m=\frac{y_2-y_1}{x_2-x_1}$$ - Point-slope form: $$y-y_1=m(x-x_1)$$ - Slope-intercept form: $$y=mx+b$$ - **Geometry:** - Area of a triangle: $$A=\frac{1}{2}bh$$ - Area of a rectangle: $$A=lw$$ - Area of a circle: $$A=\pi r^2$$ - Circumference of a circle: $$C=2\pi r$$ - Pythagorean theorem: $$a^2+b^2=c^2$$ - Volume of a rectangular prism: $$V=lwh$$ - Volume of a cylinder: $$V=\pi r^2h$$ - **Statistics and Probability:** - Mean (average): $$\text{mean}=\frac{\text{sum of values}}{\text{number of values}}$$ - Probability of an event: $$P=\frac{\text{favorable outcomes}}{\text{total outcomes}}$$ 3. These formulas cover the most common SAT math topics: algebra, geometry, and basic statistics. 4. Memorizing these will help you solve a wide range of SAT math problems efficiently. 5. Practice applying these formulas in different problem types to build confidence and speed.