For a complex number in the form of a + bi, the real part of the complex number is plotted on the axis and the imaginary part of the complex number is plotted on the axis of a complex plane.

(horizontal, vertical)

Average acceleration: i have no idea how to do this.

Peter applied to an accounting firm and a consulting firm. he knows that 30% of similarly qualified applicants receive job offers from the accounting firm, while only 20% of similarly qualified applicants receive job offers from the consulting firm. assume that receiving an offer from one firm is independent of receiving an offer from the other. what is the probability that both firms offer peter a job?

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?