The flight of one type of flare at the symphony of fire is described by the formula H= -3 (T -1.5)^2+21 where age is the height of the rocket in metres and T is the time in seconds after the rocket was fired. A) What was the max height of the rocket and when did it reach max height?
B) find the height of the ticket at 2.5 secs
C) how many seconds after the rocket was fired did it hit the ground?

answer: finding the extract measurements and knowing the points

step-by-step explanation:

d

step-by-step explanation:

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are