To collect data on the signal strengths in a neighborhood, Pamela must drive from house to house and take readings. She has a graduate student, Kevin, to assist her. Pamela figures it would take her 12 hours to complete the task working alone, and that it would take Kevin 20 hours if he completed the task by himself. How long will it take Pamela and Kevin to complete the task together?

1.two more than the quotient of a number and 6 is equal to 7 use the c for the unknown number translate the sentence into an equation

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

Indicate the formula for the following conditions: p^c(n,r)=