PLEASE HELP ME FAST! 4. Simplify. Show your work and write your answer as a mixed number in the simplest form.

1 1
x 5
2 4

if you didnt know what i wrote its : 1/2 times 5 1/4

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)

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

Urgent? will give brainliest given that the blue triangle is a right triangle, which expression correctly gives the area of the red square? a) a2 + b2 b) a2 - b2 c) a2 - c2 d) c2 - a2