Answer:
C
Step-by-step explanation:
the error he made is he added 7.4y+11.2y
The question is missing the figure. So, it is attached below.
Answer:
Area of the shaded sector is <u>144π units squared</u>.
Step-by-step explanation:
Given:
Central angle of the sector is,
Radius of the circle is,
We know that, area of a sector of a circle of radius 'R' and central angle is given as:
Plug in . This gives,
Therefore, the area of the shaded sector is 144π units squared.
The maximum time 1.75 second in case of not having the height:
1. change in ax²+bx+c form⇆ -16t²+56t-40=h
h=(8-8t)(2t-5)
h=16t-40-16t²+40t
h=-16t²+56t-40
2. t max=-b/(-2a)=-56/(-2×-16)=1.75 second