A class spent hour on art and 1 /3 hours on art and 1 1/3 hours on mathematics. How much time did the class spend on art and mathematics? A. 2 /3 hour
B. 1 hour
C. 1 1/2 hours
D. 2 1/3 hours
E. 1 2/3 hours​

idk man good luck man

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.

df =

both have same length