What is the domain of the function on the graph? 5
O all real numbers
4.
3
O all real numbers greater than or equal to -2
O all real numbers greater than or equal to -5
O all real numbers greater than or equal to 0
2
1
5 4 3 2 11
2 3 4 5 X
2
-3
4
L5
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answer: h

step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

the correct option is b

step-by-step explanation: