Math Equations

Question 1

Simple Interest Equation

Answer 1

V=P(1+rt/100)
where P=principal, r=rate and t=time

Question 2

Compound Interest Equation

Answer 2

V=P(1+r/100n)^nt
where P=principal, r=rate, t=time, and
n=the number of times compounded per year

Question 3

Work Rates Equation

Answer 3

1/TotalWork=(1/workrate1)+(1/workrate2)

Question 4

Sets Equation

Answer 4

A+B-(AUB)

Question 5

Distance Equation

Answer 5

D=rt
Distance=rate(time)

Question 6

Area of a circle

Answer 6

A=(pi)r^2

Question 7

Circumference of a Circle

Answer 7

C=2(pi)r

Question 8

Arc Length of a Circle

Answer 8

Arc Length= (x/360)2(pi)r

Question 9

Area of Sector for a Circle

Answer 9

Area of Sector=(x/360)(pi)r^2

Question 10

Area of a Trapezoid

Answer 10

height x [(base1+base2)/2]

Question 11

Total Degrees of a polygon

Answer 11

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

Question 12

Degree Measure of a Congruent Polygon

Answer 12

Degree Measure= 180(n-2/n)

Question 13

Distance Formula

Answer 13

sqare root of [(x-x)^2]+[(y-y)^2]

Question 14

Is 1 prime?

Answer 14

No

Question 15

____ is the smalles prime and the only even prime number

Answer 15

2

Question 16

Fast Fractions

Answer 16

1/x+1/y=(x+y)/xy

Question 17

Combination Formula

Answer 17

nCr=n!/[r!(n-r)!]

Question 18

Permutations Formula

Answer 18

nPr=n!/(n-r)!

Question 19

Probability formula

Answer 19

Probability of an event=
(number of ways that fir the requirement)/
(number of total ways)