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heyrosaphoto2610
05.10.2019 •
Mathematics
A40 ft ladder leans against a building so that the top of the ladder touches the building at a point 21 ft above the ground. to the nearest tenth of a foot, how far from the bottom of the building is the bottom of the ladder?
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Ответ:
34.04 feet
Step-by-step explanation:
We are given that :
A 40 ft ladder leans against a building so that the top of the ladder touches the building at a point 21 ft above the ground.
This can be represented by the figure attached
We have to find the value of x
Clearly it is a right angle triangle with base x, perpendicular 21 feet and hypotenuse 40 feet.
⇒ x² + 21²=40²
⇒ x²= 1159
⇒ x= 34.04
Hence, the bottom of the building is 34.04 feet away the bottom of the ladder.
Ответ:
Yes, the given relation is a function.
Step-by-step explanation:
Given the quadratic function, y = (x + 1)², and the domain of {-2, -1, 0, 1, 2, 3}:
By definition, a function is a relation in which no two ordered pairs have the same first component (x-values) and different second components (y-values). Observing the given domain, there are no repeating input values.
Therefore, the correct answer is that the relation is a function.