Look at picture if shapes is your thing my brain has disintegrated today

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

Plzzz answer both questions and i will give you 100 points