exam Maths Puzzle Numerical Ability

2x^2-4x+16=0

Read Solution (Total 0)

exam Other Question

Using the Gauss-Jordan elimination on the following linear system, what would the augmented matrix be?

3w-x=2y+z-4
9x-y+z=10
4w+3y-z=7
12x+17=2y-z+6

The way I have tried t A coin purse contains an equal number of nickels, dimes and quarters. The total amount of money in the purse is 720 cents. How many quarters are in the coin purse?