Final grades are often computed using weighted averages. for example, fran's teacher uses the following: homework 10%, quizzes 20%, and tests 70%.
fran has an average homework score of 92. her quiz score average is 68, and her test score average is 81. what final grade can fran expect?
a) 73.5
b) 75.5
c) 78
d) 79.5

What percent of the circle below is shaded?

Amovie streaming service charges it’s customers $15 a month. martina has $98 saved up. will she have any money left over if she pays for the maximum amount of months she can afford? explain.

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?