Two trains leave the same station headed in opposite directions. After 4 hours the trains are 120 miles apart. If train A travels twice as fast as train B, how fast does train A travel?

80mph

Step-by-step explanation:

Firstly in a problem like this, I would divide 120 by 3, making 40. Now I knwo that I can use 40 and 80 because it adds up to 120 and 80 is double 40.

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.