As Julia is going for a walk through the neighborhood feet,yards or meter is most appropriate for measuring the distance she covered as the walk is generally is in few yards or meters.Using kilometers in place of yards or feet is not appropriate because walk is generally of short nature .
Using millimeter or centimeter is also not apt because it will unnecessarily increases the calculations.
Solve for x over the real numbers: -x^2 - 12 = -87 Add 12 to both sides: -x^2 = -75 Multiply both sides by -1: x^2 = 75 Take the square root of both sides: Answer: x = 5 sqrt(3) or x = -5 sqrt(3) both Answers are correct
