Algebra
Solve 3x + 7 = 22
x = 5
What is sin(30)? (the angle is in degrees)
1/2
How many degrees are in the interior angles of a triangle?
180
What is next: 2, 4, 8, 16, ____?
32
What is the probability of rolling a 6 on a fair six sided dice?
1/6
Factor x2 - 9x + 20
(x - 4)(x - 5)
Convert 30 degrees to radians.
pi/6
Find the area of a circle with radius 4.
16pi
What is the smallest prime number greater than 20?
23
What is the probability of flipping three heads in a row?
1/8
Solve 2x = 128
x=7
What is cos(2pi/3)
-1/2
Find the length of a rectangle with a perimeter of 30 and a width of 5.
10
What is the remainder when 72026 is divided by 5?
1
What is the probability that the sum of two dice rolls is 7?
1/6
If x + (1/x) = 5, find x2 + (1/x2)
Hint: try squaring.
23
if sin(x) = 3/5 and x is in quadrant II, find cos(x)
-4/5
What is the diagonal length of a cube with side length 2?
2 root 3 (or root 12)
Find the sum of the first 20 positive integers.
210
What is the probability of drawing two red marbles from a bag with 3 red and 7 blue marbles? The marbles are not added back in after being drawn.
1/15
If a + b = 10 and ab = 21, find a2 + b2
58
Simplify (1 - cos2 x)/(sin x)
(sin2 x)/(sin x)
Find the area of a triangle with side lengths 13,14,15.
84
What is the first digit of 3100
1
How many ways can 5 people sit in a row?
120 (or 5!)