Which set of side lengths form a right triangle?
a.7 cm, 8 cm, 10 cm
b.15 m, 20 m, 25 m
c.10 in., 41 in., 40 in.
d.3 ft, 6 ft, 5 ft
i was thinking c but i searched up and it said 91 are obtuse & not right angle so im confused

Abiologist is recording the loss of fish in a pond. he notes the number of fish, f, in the pond on june 1. on july 1 there were 63 fish in the pond, which is 52 fewer fish than were in the pond on june 1. which equation represents this situation? a. f – 52 = 63 b. f – 63 = 52 c. 63 – f = 52 d. f – 63 = –52

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota