Determine the lcd of the fractions. type your answer in the space provided. do not include spaces in your answer. if the answer requires an exponent, use the ^ key to indicate the power. for example, if the answer is 2x^2y, type 2x^2y. x/2+y/3-z/4

Combine like terms to make a simpler expression 3z+z

Find two numbers if their sum is 91 and the ratio is 6: 7?

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