. Find the area of a triangle whose sides are 6cm, 8cm, 10cm

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

What is the area of the triangle 10 13 12

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.