What fraction is equivalent to 64/66?

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

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