What are some of the helpful mathematical formulas that we should memorize for the SAT?
If you go to http://www.collegeboard.com and wander around a bit, you'll find links to help you get ready for the SAT. There's the obvious one at the right, and more in the Students section.
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I take it from the way you have worded the question you are referring to the US SAT rather than say the UK SATs (Standard Assessment Tests)? If it is the latter the BBC bitesize web site has useful material.
Thank you for using the Jiskha Homework Help Forum. Here is one more site on SAT, etc.
http://www.teacheroz.com/college.htm
To answer your question about helpful mathematical formulas to memorize for the SAT, there are several key formulas that are commonly tested on the math sections of the exam. It is important to note that while memorizing formulas can be helpful, it is equally important to understand the concepts behind them. Here are some formulas you should be familiar with:
1. Pythagorean Theorem: a² + b² = c², which relates the lengths of the sides of a right triangle.
2. Distance Formula: The distance between two points (x₁, y₁) and (x₂, y₂) in a coordinate plane is given by √((x₂ - x₁)² + (y₂ - y₁)²).
3. Quadratic Formula: For a quadratic equation ax² + bx + c = 0, the solutions for x are given by x = (-b ± √(b² - 4ac)) / (2a).
4. Area of a Triangle: The area (A) of a triangle with base (b) and height (h) is given by A = (1/2) * b * h.
5. Slope-Intercept Form: The equation of a line in the form y = mx + b, where m represents the slope and b represents the y-intercept.
6. Area of a Circle: The area (A) of a circle with radius (r) is given by A = πr², where π is approximately equal to 3.14.
7. Volume of a Rectangular Prism: The volume (V) of a rectangular prism with length (l), width (w), and height (h) is given by V = lwh.
Remember, these are just a few examples and there are many more formulas that may be useful. It's also important to review and understand various concepts in algebra, geometry, and trigonometry to tackle the math section of the SAT effectively. Practice using these formulas in a variety of problem-solving situations to solidify your understanding.