In the diagram, triangle pmn is congruent to triangle qsr. if qr =20in, rs=7in, and sq=24in, what is pn?

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

Asap! i'm not good math and i'm lost.

Select the term that describes the linear portion in this quadratic equation 7x^2-12x+16=0 a) -12x b) 7x^2 c) 16