X = 7.............................
-5/3-9/2x=3/2
-10/6-9/2x=9/6
-9/2x=19/6
x=19/6÷-9/2
x=-19/6×2/9
x=-38/54 or -19/27. Hope it help!
Question 6
first multiply the numerator and
denominator by 9+(2)^1/2
Question 7
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>
What 2 numbes multiply go get 6 and add to get -5
-6 and 1
(x-6)(x+1)=0
set to zero
x-6=0
x=6
x+1=0
x=-1
last one
