ACT MATH STUDY GUIDE Exam 27 Questions with Verified Answers
Degrees in triangle - CORRECT ANSWER 180
Degrees in circle - CORRECT ANSWER
... [Show More] 360
Area of triangle - CORRECT ANSWER 1/2x base x height
Area of circle - CORRECT ANSWER pi x radius to the second power
Circumference of circle - CORRECT ANSWER 2 x pi x radius OR pi x diameter
Area of rectangle - CORRECT ANSWER Base x height
Area of parallelogram - CORRECT ANSWER Base x height
Area of square - CORRECT ANSWER side to the second power
Pythagorean Theorem - CORRECT ANSWER a to the second power plus b to the second equals c to the second power. (C=hypotenuse, only true for right triangles)
Slope-intercept form of a line: - CORRECT ANSWER y=mx + b
Point slope form of a line: - CORRECT ANSWER y - y1 = m (x - x1)
Slope formula [between 2 points (x1,y1) and x2, y2)] - CORRECT ANSWER y2 - y1/ x2-x1
Distance Formula [between 2 points (x1, y1) and (x2, y2)] - CORRECT ANSWER Square root (x2 - x1) to the second power + (y2 - y1) to the second power
Midpoint Formula [between 2 points (x1, y1) and (x2, y2)] - CORRECT ANSWER (x1 + x2/2, y1 + y2/2)
Equation of circle: Case 1: If center is (0,0): - CORRECT ANSWER x2 + y2 = r2
Equation of circle: Case 2: If center is (h,k): - CORRECT ANSWER (x-h)2 + (y-k)2 = r2
Logarithm Formula: log base x = y - CORRECT ANSWER b to the y power equals x
sin - CORRECT ANSWER opposite/hypotenuse
cos - CORRECT ANSWER adjacent/hypotenuse
tan - CORRECT ANSWER opposite/adjacent
Volume of a cylinder - CORRECT ANSWER pie x radius to the second power x height
Volume of box - CORRECT ANSWER V=length x width x height
Mean - CORRECT ANSWER Add all numbers, divide by number of numbers.
Median - CORRECT ANSWER The middle number from small to large, choose median.
FOIL - CORRECT ANSWER First, outside, inside, last (EX: (X-3)(X+2) = x2 + 2x -3x - 6)
Number of degrees in n-sided polygon - CORRECT ANSWER (n-2)(180)
Percent Formula - CORRECT ANSWER is/of = %/100 [Show Less]