What is the midpoint between (-2, -3) and (1, 1/2)? a) (-1,-5/2)
b) (-1/2,-5/2)
c) (-1,-5/4)
d) (-1/2,-5/4)

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

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)