Agroup of farmers bought 28 tractors and trucks. there were 1.8 times more tractors than trucks. how many tractors and how many trucks were bought by the farmers?

What is the binomial expansion of (2x-3)^5

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236