Math Equations

Question 1

Area of a Trapezoid

Answer 1

1/2(base 1 + base 2) * h

Question 2

Total degrees of a Polygon

Answer 2

180 (n-2) where n = # of sides

Question 3

Degrees per side of a Polygon

Answer 3

(n-2) * 180/n

Question 4

Arc Length of a Circle

Answer 4

x/360 * 2π(r^2)

Question 5

Area of a Circle

Answer 5

π(r^2)

Question 6

Circumference of a Circle

Answer 6

2πr

Question 7

Area of a Sector (Circle)

Answer 7

x/360 * π(r^2)

Question 8

Area of a Triangle

Answer 8

1/2(bh)

Question 9

Pythagorean Theorem

Answer 9

a^2 = b^2 + c^2

Question 10

Average Speed

Answer 10

total distance/total time

Question 11

Slope

Answer 11

y = mx + b

Question 12

Distance

Answer 12

rate * time

Question 13

Distance Formula

Answer 13

square root of: (𝑥2−𝑥1)^2 + (𝑦2−𝑦1)^2

Question 14

Simple Interest

Answer 14

V = P(1 + rt/100); P = Principal, R = Rate, T = Time

Question 15

Compound Interest

Answer 15

V = P(1 + r/100n)^nt; P = Principal, R = Rate, T = Time, N = Number of Times Compounded per Year

Question 16

Percentage Increase

Answer 16

((New amount - Original amount)/Original amount) * 100

Question 17

Percentage Decrease

Answer 17

((Original amount - New amount)/Original amount) * 100

Question 18

Probability of Event

Answer 18

number of ways that fit the requirement/number of total ways