Which subtraction expression does the number line model show? -13 + 4
-4 - 13
-4 -9
-4 + 9

Find the average speed of a rabbit that runs a distance of 22 m in a time of 1.8 s .

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?

Me with geometry ! in this figure, bc is a perpendicular bisects of kj. dm is the angle bisects of bdj. what is the measure of bdm? •60° •90° •30° •45°