Quan did a lab in chemistry class and found that the substance he was given had a mass of 3.4 G and a volume of 1.2 6ML. his teacher told him the following densities : calcium 1.55G/ML, magnesium 1.74G/ML, aluminum 2.7 G/ML, Iron 7.87, silver 10.5 G/ML, lead 11.34G/ML. can you identify what substance Quan has? ANSWER QUICK PLEASE!!

Can someone pls ! pls answer all. no explanation needed..

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3

Triangle knm is what is true about the sides of knm