M<KPN = 1/2(90+50) = 140/2=70
answer D. 70 (last choice)
Answer:
0.72secs
Step-by-step explanation:
Given the height of the ball in air modeled by the equation:
h=−16t²+23t+4
Required
Total time it spent in the air
To get this we need to calculate its time at the maximum height
At the maximum height,
v = dh/dt = 0
-32t + 23 = 0
-32t = -23
t = 23/32
t = 0.72secs
<em>Hence the total time it spend in the air will be 0.72secs</em>
We can find out two point on the line (0,2)and(4,1)
The slope =(2-1)/(0-4)=-1/4
9t = 27.99
5t = ?
Cross-multiply : 9t? = 139.95t
?=15.55
Answer:Graph the line using the slope and y-intercept, or two points.
Slope:
5
y-intercept:
3
x
y
0
3
1
8
Step-by-step explanation:
