Last Thursday​, a parking lot had 80 cars. Of those 80 ​cars, ​30% were ​brown, 16 were blue​, and the rest were silver . What percent of the cars were silver​?

How do you find the area of a triangle

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 + 4x + 5 = 0

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.