Which of the following statements is false?
a) The sum of two rational numbers is always rational.
b) The sum of a rational and an irrational number is always irrational.
c) The difference of a rational and an irrational number is always irrational.
d) The sum of two irrational numbers is always irrational

Question 5 spring semester final exam math evaluate

What is the solution set of the quadratic inequality x^2-5< or equal to 0

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?