SOLUTION: Suppose g(x)=sgrt(2x-10) . The domain of g is: a). [-5,0] b). (-infinty,infinty) c). (-infinty,-5]U[0,infinty) d). [0,infinty) e). none of these *I'm completel

Question 692377: Suppose g(x)=sgrt(2x-10) . The domain of g is:
a). [-5,0]
b). (-infinty,infinty)
c). (-infinty,-5]U[0,infinty)
d). [0,infinty)
e). none of these

*I'm completely lost, Thank you!*
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
You can't take the square root of a negative number, so the radicand can't be negative.

This means 2x - 10 >= 0

Solve for x

2x - 10 >= 0

2x >= 10

x >= 5

So the domain is [5, infinity)

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Jim

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