General

Question 1

Area of Circle

Answer 1

A = (pi)r^2

Question 2

Simple interest formula

Answer 2

A=p(1+(t*r))

Question 3

Compound Interest formula

Answer 3

A=P(1+r/c)^(t*c)

Question 4

What is a prime factor?

Answer 4

Expressing a number as a product of its prime factors

Question 5

Ratios: 4:2 4:1 -> What is the simplified ratio?

Answer 5

4:2 4:1 -> 8:4 4:1 = 8:4:1

Question 6

Edges, Vertices, Faces of a Box?

Answer 6

Edges = 12, Vertices = 8, Face = 6

Question 7

Right Triangle: 5, ?, ?

Answer 7

12, 13

Question 8

Right Triangle: 8, ? , ?

Answer 8

15, 17

Question 9

Right Triangle: 3, ?, ?

Answer 9

4, 5

Question 10

Right Triangle: 7, ? , ?

Answer 10

24, 25

Question 11

What is the angle opposite the largest side, if the largest side of a triangle is the diameter of a circle.

Answer 11

90 (its the largest angle possible for this)

Question 12

Odd +- Odd = ?

Answer 12

Even

Question 13

Even +- Even = ?

Answer 13

Even

Question 14

Odd +- Even = ?

Answer 14

Odd

Question 15

Odd * Odd = ?

Answer 15

Odd

Question 16

Odd * Even = ?

Answer 16

Even

Question 17

Even * Even = ?

Answer 17

Even

Question 18

Calculate the mean?

Answer 18

( Sum of all numbers ) / ( n )

Question 19

Area of an Equilateral Triangle

Answer 19

( sqrt(3) * (side)^2 ) / 4

Question 20

Sum of consecutive even integers if sum is -20?

Answer 20

n + (n+2) + (n+4) + (n+6) + (n+8)

Question 21

Given the mean and median are both 0, do both sides of the median have to be equal?

Answer 21

No, consider { -3, 0, 0, 1, 2 }

Question 22

The triangle inequality theorem

Answer 22

The length of any side of a triangle must be less than the sum of the lengths of the other two sides.

Question 23

The average of a group of consecutive integers is = to ?

Answer 23

The average of a group of consecutive integers is = to the average of the largest and smallest numbers.

Question 24

What is the formula for the volume of a cube in terms of its edge length

Answer 24

s^3 if s = edge length

Question 25

What is the formula for the surface area of a cube in terms of its edge length

Answer 25

6(s^2)

Question 26

A 45:45:90 Triangle has sides of ratio:

Answer 26

1:1:sqrt(2)

Question 27

Percentage Increase Formula

Answer 27

( finish - starting ) / ( starting )

Question 28

Shortcut to find the sum of consecutive integers?

Answer 28

S = (n/2) (a_1 + a_n)

Question 29

What is the arc length formula?

Answer 29

arc length / circumference = central angle / 360

Question 30

What is this polynomial: P^2 + 2QP + Q^2

Answer 30

( P + Q ) ^2

Question 31

The third side of a triangle must be:

Answer 31

1. Greater than the sum of the two other sides.
2. Less than the difference of the two sides.

Question 32

Area of a trapezoid

Answer 32

( ( Base1 + Base2 ) / 2 ) * ( H )

Question 33

A 30, 60, 90 degree triangle has what sides?

Answer 33

1, sqrt(3), 2st

Question 34

LCD and GCF methods:

Answer 34

1. Find the prime factorization of each.
2. LCD: Multiply only unique, common primes of each values.
3. GCD: Multiply all unique common and non-common primes with each other.

Question 35

Expand r C n

Answer 35

( first n values of r! ) / ( n! )

Question 36

What can r C n be written as to simplify questions?

Answer 36

n C ( n - r )

n C r == n C ( n - r) is a simplification .

Question 37

The sum of an interior angles in an n-sided polygon is equal to:

Answer 37

180 ( n - 2 )

Question 38

8 ^ 24 can be simplified to what?

Answer 38

( 2 ^3 ) ^ 24 ==== 2 ^72

Question 39

P(A and B) = ???

Answer 39

P(A and B) = P(A) + P(B) - P(A or B)