Which equation represents the statement: Three times the sum of a number and 5 is -30 a.3n+5=30
b. n+15=-30
c.3(n+5)=-30
d.(n+5)/3=-30

The answer is C. Hope it helps.

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.