Let
x---------> <span>the width of the gravel path
we know that
72=(2x+6)*(2x+7)----> 72=4x</span>²+14x+12x+42-------> 4x²+26x-30=0
using a graph tool-----> to resolve the second order equation
see the attached figure
the solution is
x=1
the answer is
the width of the gravel path is 1 ft
274.6251 the formula for the volume of a sphere is v=4/3 pie3 by cavaliers principles of volume the radius of the sphere and volume must be equal
a ratio is how many X there are per Y. for example, a fraction is a ratio: 10/5 = 2 because there are 2 fives in a ten. but usually a ratio is written as x:y.
so to find these ratios, first we need to find the number of girls. 30 students-16 boys = 14 girls.
the ratio of girls to boys is 14:16 because there are 14 girls to every 16 boys. we simplify this to 7:8.
the ratio of girls to all students is 14:30. we simplify this to 7:15.
the ratio of boys to girls is 16:14, which simplifies to 8:7.
the ratio of boys to all students is 16:30, which simplifies to 8:15.
Unit walking rate in miles per hour = 5 2/3 / 2 2/3 = 17/3 / 8/3 = 17/3 x 3/8 = 17/8 = 2 1/8 miles per hour.
Unit walking rate in hours per mile = 1/ 17/8 = 8/17 hours per mile.
What is the t and what is the h