ACT MATH

Math terms/formulas/concepts: must know

Even Numbers

Divisible by 2 (2, 4, 6, 8)

Odd Numbers

Not divisible by 2 (1, 3, 5, 7)

Prime

Divisible by 1 and itself (2, 3, 5, 7)

• 1 is not prime

• 2 is the only even prime

When converting degrees/radians what does 180 deg. equal?

ALWAYS DIVIDE BY PI RADIANS

Irrational

Can not be expressed as a fraction (pi or sqrt 5)

Indirect Proportion Formula

(direct proportions are y=kx)

Function Notations

Root Rules in Math

Cool… What about other higher power roots?

What does a function w/ No Solutions look like

With Quadratic standard form how can I find vertex x coord?

What is formula for period of Trig Graphs

Rational

Can be expressed as a fraction (-11/3) + any integers + any terminating decimals (0.02)

Formula for area of a Equilateral Triangle

What perimeters maximize enclosed areas?

1. Circles

2. Squares

Ex// If you have 40 ft of fencing to enclose a yard and the given answer choice is not a circle, what dimensions maximize the area of the yard?—10×10

Pyt. T for Obtuse Triangle

Pyt. T for Acute Triangle

Hyperbola Formula