RG_Alg

=Introduction = s=√30fd is the formula to find the speed of a car, where s is the speed, f is the friction of the road and d is the length of the skid marks.

=Questions = > s=√30(.15)(300) > s=√1350 > s=37 mph > s=√30(.8)(132) > s=√3168 > s=56 mph > 45=√30(.8)d > 45=√24d > 452=(√24d)2 > 2025=24d > 2020/24=24d/24 > d=84 ft
 * 1) s=√30fd
 * 1) s=√30fd
 * 1) s=√30fd

=Explanations = Number 7 and 8
 * Formula
 * Put numbers into formula
 * Multiply everything under the radical
 * Find the square root of what is left under the radical

Number 9
 * Formula
 * Put numbers into formula
 * Multiply everything under the radical
 * <span style="font-family: Times New Roman,serif;">Square both sides
 * <span style="font-family: Times New Roman,serif;">divide by the coefficient