Answer:
(A)
Step-by-step explanation:
In option A
Options B, C and D will give us an irrational product. Therefore the expression in Option A ( ) will give a rational product.
Option A is the correct option.
On Ed.genuity the answer is A
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tngbunjregtnmf rejdmnf vfrjelkfnm e3jkwnrmfd
Answer: 30
50x .4 = 20
50-20=30
Hope it will help:))))))