F the radius of a flying disc is 7.6 centimeters, what is the approximate area of the disc?

Charlie tosses five coins.what is the probability that all five coins will land tails up.

What is the value of the discrimination for the quadratic equation 0=×2+2+×2

Which of the following statements is true? a. the irrational number system is not closed under multiplication, because the product of two irrational numbers is always a rational number. b. the irrational number system is not closed under multiplication, because the product of two irrational numbers is not always an irrational number. c. the irrational number system is closed under multiplication, because the product of two irrational numbers is always an irrational number. d. the irrational number system is closed under multiplication, because the product of two irrational numbers is always a rational numbers. reset submit