Amason wants to start building a stone pyramid the base of which has 551 blocks and the top 26th layer has only 1. if the number of blocks on each layer follow an arithmetic sequence, how many blocks should he get?

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

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

Given abc find the values of x and y. in your final answer, include all of your calculations.