The domain is the set of all first elements of ordered pairs (x-coordinates).
Step-by-step explanation:
To find a set of 3 leg lengths that will form a right-angled triangle, the square of the largest leg must be equal to the sum of the squares of the other 2 legs.
We try out all the options:
39² = 1521, 15² + 36² = 1521.
12² = 144, 8² + 4² = 80.
17² = 289, 13² + 9² = 250.
Since 39² equals 15² + 36², option A is the correct answer.
That expression is written like so:
(5 + d)/(12 - w)
<span>they built 2.22 km per day I think</span>
