Can the sides of a triangle be in a ratio of: a 3: 4: 5

Use the graph of the sine function y=2sinθ shown below

In a probability experiment, karen flipped a coin 76 times. the coin landed on heads 32 times. what percentage of the coin flips resulted in tails? round to the nearest percent. a. 58% b. 65% c. 42% d. 60%

Which table represents a linear function? i'll give brainliest to first answer ^'^