A18 gram sample of a substance that's used to sterilize surgical instruments has a k-value of 0.1226. n = noe -kt no=invalid mass (at time to =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. what is the substances half life, in days rounded to the nearest tenth.

Suppose that an airline uses a seat width of 16.516.5 in. assume men have hip breadths that are normally distributed with a mean of 14.414.4 in. and a standard deviation of 0.90.9 in. complete parts (a) through (c) below. (a) find the probability that if an individual man is randomly selected, his hip breadth will be greater than 16.516.5 in. the probability is nothing. (round to four decimal places as needed.)

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.