Answer:
d forms a proportion
Step-by-step explanation:
3x5=15,4×5=20
so they both increase protionally
therefore they are protional
2
2 - 1 1
------ = ----- = 2
1 - 1/2 .5
1/9
the answer is 11
x^2=20
just square both sides and u get
x = 4.472135955
