8. Christina and Youssef work in office buildings that are 80 feet away from each other. From the
top of her office building, Christina notices that the angle of elevation to the top of Youssef's
building is 45°. The angle of depression from Christina to the base of Youssef's building is 56º.
Find the height of Youssef's office building, rounded to the nearest tenth of a foot.

Volume of a cylinder with a radius of 13 in and height of 30 in

What line represents the relationship between r and s

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