David ran the yard dash in 7.2 seconds and won the event justin came in second with a time of 8.1 seconds how much better was davids time than justins

0.9 seconds

Step-by-step explanation:

Since Justin came in slower, you would put his time first:

8.1 - 7.2

Doing that gets you 0.9

7.3

step-by-step explanation:

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.