Help me answer 1 and 2 please
1 answer:
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Andrew can reach a maximum of high up the wall.
The right-angled triangle formed can be solved using the ratio. that is
where is the distance from the foot of the wall to the tip of the ladder where it rests on the wall. Substituting, and solving for
, we get
Since Andrew can reach an extra above the point where the ladder rests against the wall, the maximum height Andrew can paint is
Another solved word problem on trigonometry can be found here: brainly.com/question/12146092
Option C. all real numbers greater than 0 is the correct answer
Further explanation:
Domain is the set of all inputs on which the function is defined or real.
The given function is:
As the function involves a square root, we have to avoid negative numbers.
- All positive real numbers will produce defined output so the positive real numbers will be included in the domain.
- If we look at negative real numbers, we will be taking square root of a negative number which will not result in a real number
So the domain will only include positive real numbers.
Hence, Option C. all real numbers greater than 0 is the correct answer.
Keywords: Domain, Domain of radical functions
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