Atriangle with a base of 6cm and a height of 8cm is similar to a triangle with base 21cm. what is the height of the second triangle

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

To prove a polygon is a rectangle, which of the properties listed must be included in the proof?

Priya mixes 2 1/2 cups of water with 1/3 cup of orange juice concentrate. diego mixed 1 2/3 cups of water with 1/4 cup orange juice concentrate. how much concentrate should each of them mix with 100 cups of water to make juice that tastes the same as their original recipe? explain or show your reasoning.