All you would do is multiply .9 by 20
.9*20=18
90% of 20 is 18
The equation is 7=1x and answer x=7
it just so happen that √2 is an irrational number, so any product with it as a factor, will yield an irrational number as well.
factoid: Ancient Greeks were scared of irrational numbers, and they steered clear from √2.
I think the answer would be C :$:$:$:$:$:$:$:$:&:$
Answer:
-87
Step-by-step explanation:
-(-7^2) + 6(-7) + 4
-49 -42 + 4
-87