Mina has 5 more marbels than kirsty
kirsty has 2 more than seb
alltogether there are 30
how man marbels does each child have
show your working out

mina. kirsty. seb
? ? ?

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

What number is 7 units left of -15?

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer