How many line segments can be made from 30 non-collinear points?

Calculate the mean absolute deviation of the following numbers: 60, 80, 100, 75 and 95

Which of the following is the factorization of the binomial x^2 - 4^2?

What value of x will satisfy the equation: 0.4(5x – 1470) = x?

Which of the following is ALWAYS true?

he average of 5 different counting numbers is 20. What is the highest possible value that one of the numbers can have?

Three brothers inherited a cash amount of P62,000 and they divided it among themselves in the ratio of 5:4:1. How much more is the largestshare than the smallest share?

What are the missing terms in the series 5, 20, 80, ___,1280, ___, 20480?

At what rate per annum should P2400 be invested so that it will earn an interest of P800 in 8 years?

The area of a rectangle is (x2 + 2x - 8). If itslength is x + 4, what is its width?

What is the value of 12⅙ - 3 ⅜ - 5 ⅔ + 20 ¾?

The vertex angle of an isosceles triangle is 20°. What is the measure of one of the base angles?

Ana and Beth do a job together in three hours. Working alone, Ana does the job in 5 hours. How long will it take Beth to do the job alone?

How much greater is the sum of the first 100counting numbers than the sum of the first 50 counting numbers?

Which of the following has the largest value?