if (2,3) bisects the line segment joining the points (a,6) and (8,b),then what are the values of a and b​

After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2. after how many seconds will the ball hit the ground before rebounding?

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

Zahra wants the equation below to have an infinite number of solutions when the missing number is placed in the box.