Consider this option:
1. according to the first condition 45 min for 4 p. 5 walls, it means that: n*a*t=w, where n-numbers of people, a- ability of one person and w-numbers of walls.
4a*45=5, a=1/36 - ability for one person.
2. according the second condition for 6 people and 4 walls:
6*1/36*t=4, ⇒ t=24 minutes.
answer: 24 min.
If it is possible check the arithmetic part.
Answer:
1.5secs
Step-by-step explanation:
Given the expression that models the height as;
h(t) = -16t²+20t +6
The ball will touch the ground at when h(t) = 0
0 = -16t²+20t +6
Swap
-16t²+20t +6 = 0
Divide through by -2
8t²-10t-3 = 0
Expand using the general formula
t = -(-10)±√(-10)²-4(8)(-3)/2(8)
t = 10±√100+96/16
t = 10±√196/16
t = 10±14/16
t = 10+14/16
t = 24/16
t = 1.5
Hence it will take the ball 1.5secs to hit the ground
Answer:
Yes your welcome
Step-by-step explanation:
It is because you are going backwards in the negative form
Hey there,
Ok so we need to put this into slope-intercept form so we can find the slope eaisly, (y=mx+b)
If we move x to the right side we are left with,
2y=-x-3
Next we divide by 2 to free up the y,
y=-1/2x-3/2, this is now in y=mx+b form. Making the slope -1/2
Hope this helped!