23 security systems a home security system is designed to have a 99% reliability rate. suppose that nine homes equipped with this system experience an attempted burglary. find the probabilities of these events: a. at least one of the alarms is triggered. b. more than seven of the alarms are triggered c. eight or fewer alarms are triggered.

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

$15 each

step-by-step explanation:

$45/3 children= $15 each