Un-Answered Questions { Mathematics }

where is the y intercept for y = sin x?

559


When a quadratic function is plotted on a typical graph, it assumes what shape?

504


Every even integer greater than 2 can be written as the sum of two primes. Give the respective two pairs of prime numbers that when added give 8 and 12.

556


The converse of this theorem is: if the sum of the squares of two sides of a triangle equal the square of the third side then the triangle is a right triangle. What is thename of the theorem?

654


If perfect numbers, except 6, can be expressed by the sum of the cubes of an unbroken sequence of consecutive odd integers, what are the consecutive odd integerswhich, when cubed, give the perfect number 28?

542


A farmer wishes to make a straight barbed wire fence 80 feet long. He wants to have a fence post every 8 feet. How many fence posts does he need?

634


Using an x- y coordinate axis, a parabola is represented by the equation x2 = 6y. The vertex of this parabola is at what coordinate point.

614


The product of 6 factorial is how many times larger than the product of 5 factorial?

545


If in a sequence of natural numbers, starting with 2, you begin eliminating every second number after 2, then every third number after 3, then every fourth numberafter 4, and so on, what type of numbers will be left?

506


If you start with 1 bacterium and double the number every 15 minutes, how many bacteria will you have at the end of 3 hours and 45 minutes?

554


What 3 consecutive numbers add up to 45?

588


The surface of a sphere subtends a solid angle of what amount at its center.

522


What form of geometry is one in which the parallel postulate of euclidean geometry does not hold:

520


Have you learned any new math tactics or shortcuts with your job?

523


What is the greatest common divisor for the numbers 102 and 30?

496