If 5x + 3y=4 and 5x-3y= 2, what is the value of (25x2 -9y2 )?

A weaver bought a bundle of grass for $ 50.00 from which he made 8 mats. If each mat was sold for $ 15.00, find the percentage profit.

Change 432five to a number in base three.

Evaluate 23 x 54 (mod 7)

If 43x = 16x+1 , find the value of x

If √24 + √96 - √600 = y√6, find the value of y

Given that A and B are sets such that n(A) = 8, n(B)=12 and n(AnB) =3, find n(AuB).

Find the 17term of the Arithmetic Progression (A.P):-6,-1,4

Evaluate, correct to four significant figures, (573.06 x 184.25).