8/28=4/14=2/7
2/7 is simplest form
Not 100% sure but hopefully this helps
Uhhm since u don't have any choices I'll say shapes
Step-by-step explanation:

Answer:

a = 1
b = 4
Step-by-step explanation:
hope this helps!! p.s. i really need brainliest :)
A. The square of an irrational number \sqrt(11)=\sqrt(11)*\sqrt(11)=\sqrt(11^2)=11, which is a rational number. However, in B, C, and D, the two pair of rational numbers cannot multiply to become a rational number.