posted by Cliff on .
Saying that 4<(sq.root of x)<9 is equivalent to saying what about x ?
Does this problem relate to 'x'values on the xy coordinate system ? If so please explain the concept here.
If not please explain this problem anyway.
A million thank yous.
First write the problem.
4 < x^(1/2) < 9
Square each term. There are no negative signs, so the inequality signs will not change.
16 < x < 81