Is an 86 an a or b?

Is 20-20 vision better than 20-10 vision? How do you write 8000 in roman numeral? What is a compound noun that means for an action taken to prevent or undo the effect to another action? How many times does 10 go in 100? When would perimeter be used in real life? 5x plus 14 equals 95-4x what is the value of x? Should your tongue have a circle around it after the percing? What is the line that connects the points on a graph called? What is 2805 divided by 2? What fraction of an inch is 0.387344? Why in terms of a cells surface area to volume ratio? 5.2 meters equal how many millimeters? What is 172 divisible by 4? What is the difference between the hydraulic grade line and the energy line? How much Cu-61 (half-life about 3 hours) would remain from a 2 mg sample after 6 hours? How many inch is 4yd? Are triangles equilateral? What are the operations in the klasies caves? What is the least 5-digit number? Does a square with a side of 1 meter have an area of 1m squared?