SOLUTION: hey, I need help on rationalizing a denominator. the question is 5/root 10. I know I need to multiply both top and bottom my root 10. when I do that, i get 5 root 10/10. the

Algebra ->  Real-numbers -> SOLUTION: hey, I need help on rationalizing a denominator. the question is 5/root 10. I know I need to multiply both top and bottom my root 10. when I do that, i get 5 root 10/10. the       Log On


   



Question 1062430: hey,
I need help on rationalizing a denominator.
the question is 5/root 10.
I know I need to multiply both top and bottom my root 10. when I do that, i get 5 root 10/10. the computer says it's wrong. can you help me?

Found 2 solutions by josmiceli, MathTherapy:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Everything you did was right, you just needed
another step
+5%2F+sqrt%2810%29+
+%28+5+%2F+sqrt%2810%29+%29%2A%28+sqrt%2810%29+%2F+sqrt%2810%29+%29+
+%28+5%2Asqrt%2810%29+%29+%2F+10+
Divide top and bottom by +5+
+sqrt%2810%29+%2F+2+
-------------------
If that's not the answer they give,
I'm stumped

Answer by MathTherapy(10555) About Me  (Show Source):
You can put this solution on YOUR website!

hey,
I need help on rationalizing a denominator.
the question is 5/root 10.
I know I need to multiply both top and bottom my root 10. when I do that, i get 5 root 10/10. the computer says it's wrong. can you help me?
You're not done yet, since 5sqrt%2810%29%2F10 can be reduced to: