Pls help me :( A model rocket is launched from a platform and its height h metres is given as a function of
the elapsed time t seconds by 2 htt =− + + 4 9 180 2 . . Using a graphing calculator determine:
a) the maximum height of the rocket
b) the time required for the rocket to reach its maximum height
c) the time required for the rocket to reach the ground

the answer is d. (1.2, -4.7) on edgn

hope this !

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

14 ft 7 inches

step-by-step explanation:

since each model inch corresponds to 25 real inches, 7 model inches will correspond to

7×25" = 175"

at 12" per foot, that is 14 feet, 7 inches.