The hypotenuse of a right triangle is 7 feet long. One leg of the triangle is 5 feet longer than the other leg. Find the perimeter of the triangle.

Step-by-step explanation:

let the legs of triangle be x  and x+5

then x²+(x+5)²=7²

x²+x²+10x+25=49

2x²+10x-24=0

x²+5x-12=0

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.