T1 + t2 = 2h and 30min;
t1 * 600 = t2 * 400 => t2 = (3/2) * t1;
then, t1 + (3/2) * t1 = 2h and 30min => 2t1 + 3t1 = 5h => 5*t1 = 5h => t1 = 1h => t2 = 1h and 30 min;
The distance is 2 * 1 * 600 = 1200miles;
To find the number of minuets you spent playing your game and reading you would solve this equation
35+(8x4)
The mass of the rock in kg is 90,000 kg
X is 0,in most situations,but could you provide a picture next time?
Ok so first equate all the three equations whether by substituting or by eliminating then choose the one das not the answer
