Find the slope of the line that passes through (4,-5) and (-2,9) a -2/3
b 5/3
c-7/3
d 2
Please help me ASAP

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

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

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?