Answer:
20 seconds
Step-by-step explanation:
roots are (0,0) and (20,0) so 20-0 will provide the time from takeoff to landing
Answer: angle 1=129 degrees
180 - 99 - 30 = 51
all the angles of a triangle should add up to be 180 degrees
51+99+30=180
angle 1 is supplementary to the angle that is 51 degrees so it would be 129 degrees. 180-51=129
es verdad pero 3 nomas puede ser dividido por 3 o 1
123456678890
I think this is the answer
when r=8.
