$1 -0.8889$
a+b=17
ab-5b=32
find the coordinates of the foot of the perpendicular from (-2,5)to 3x+y+11=0
f e
3(3x-)<3
400-396
p=4
$3p^{2}$
a two digit no. is such that the sum of its digits is 11.when the digits are interchanged,the original no.exceeds the new no. by9 ...
Use mathematical induction to prove that 1+4+7+.....+ (3n-2) = n(3n-1)/2 for all integers n.
solve 6x-13<17<8x-7
Find all solutions, if any, to the system of congruences
x ≡ 5 (mod 6), x ≡ 3 (mod 10), and x ≡ 8 (mod 15).
