x/3= (2x + 3) / 7
What is 9
What is the Pythagorean Theorem formula?
What is A2+B2=C2
What is the sum of the angles in any triangle?
What is 180
John is taller than Mary. Mary is taller than Alex. Who is the shortest?
Who is Alex
What is 300
What is the area of this circle?
What is 49π cm2
What is the quadratic formula?
A card is drawn from a standard deck of 52 cards. What is the probability it is a face card?
Maria is 28 years old. If she had been born 8 years ago, how old would she be?
What is 8?
Expand (x+7)(x2-3x+2)
What is x3+4x2-19x+14
What is the value of x?

What is 22
What is this called
1,1,2,3,5,8,13,...
What is the Fibonacci Sequence
Three fair coins are tossed at the same time. What is the probability that all three coins will come up heads OR all will come up tails?
What is 1/4?
1/8 (all heads) + 1/8 (all tails) = 1/4
In how many different ways can five students be seated in three chairs?
What is 60?
Solve for x
Log3(x2-7x+10) = Log3(3x-5)
What is 5+- sqrt (10)
In triangle ABC,
∠A=50∘, ∠B=60∘.
Point D is on side BC such that ∠ABD=20∘
Find ∠ADC
What is 110
Who invented Calculus?
What is Isaac Newton?
What is Gottfried Leibniz?
In a normal distribution with mean 100 and standard deviation 15, what is the probability of a value between 85 and 115?
What is 68%
If x and y are integers and x/y = 1, then x+y must be
a) positive
b) negative
c) odd
d) even
What is d) even?
Solve for x
2x+1+2x=48
What is 4
Triangle ABC is isosceles (AB=AC), ∠BAC=40∘
Point D is on BC such that ∠ABD=10∘. Find ∠ADC
What is 80
What is this equation called?
What is Euler's Identity?
Five students, all of different heights, are randomly arranged in a line. What is the probability that the tallest student will be first in line and the shortest student will be last in line?
What is 1/20?
1x3x2x1x1=6, 6 ways in which students can be arranged under given conditions. Under no conditions, the ways are 5x4x3x2x1=120. 6/120=1/20. 6/120=1/20.
x, y, 22, 14, 10... In this sequence, each term after the first term x is obtained by halving the term that comes before it and then adding 3 to that number. What is the value of x-y?
What is 32?
x=70, y=38.
70-38=32.