Hello! I struggle in math and I'm not sure how to do these, You can answer them or help me through it ( I'd prefer to be helped but I know some people are impatient hehe ) I'm going to make this a fair amount of points due to it bein multiple questions, Thanks so much! <3 ( added an extra 15 points because you guys are amazing <3 )

What are two numbers that have a sum of 15?

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

The base of a pyramid is a square with 5 lines of 5cm the slant height of each lateral face of the pyramid is 6 cm what is the surface area of the pyramid