# need help verifying answer ...

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• Apr 10th 2010, 10:21 AM
Affirmative, human.
• Apr 12th 2010, 10:18 AM
bringash
Quote:

Affirmative, human.

http://i40.tinypic.com/15z3608.jpg

how would i solve this problem? and if i did it right would the answer be (b) ?
• Apr 12th 2010, 05:44 PM
Sudharaka
Quote:

Originally Posted by bringash
http://i40.tinypic.com/15z3608.jpg

how would i solve this problem? and if i did it right would the answer be (b) ?

Dear bringash,

For $\sqrt{5x}$ to be defined, $x\geq{0},$-----(1)

For $\sqrt{x+4}$ to be defined, $x\geq{-4}$------(2)

By 1 and 2,

$x\geq{-4}$