Answer:
2.86 seconds
Step-by-step explanation:
We presume the height is measured above the ground, so the height when the ball hits the ground is 0 feet. Putting that into the equation and solving for t, we get ...
0 = 157 -9t -16t^2
We can use the quadratic formula with a=-16, b=-9, c=157 to find the solution.
t = (-b -√(b^2 -4ac))/(2a) . . . . . we are not interested in the negative solution
t = (-(-9) -√((-9)^2 -4(-16)(157)))/(2(-16))
t = (9 -√10129)/-32 = (9 -100.6429)/-32 ≈ 2.86384
The ball will hit the ground about 2.86 seconds after it is thrown.
5%=1hour
100% =?
100×1/5
20 hours
for it to double it needs to replicate itself by100%
It’s impossible because any number divided by 0 will always just be 0
<span> 2 student tickets
</span><span>=1.50+1.50+2.50+2.50+2.50=10.50</span>
Answer:
Blake will jog 12 blocks
Step-by-step explanation:
Allison : Blake = 3 : 2
If they keep jogging at the same rate, how many blocks will Blake jog if Allison jogs 18 blocks?
Allison : Blake = 18 : x
Equate the ratios
3 : 2 = 18 : x
3/2 = 18/x
Cross multiply
3 * x = 2 * 18
3x = 36
Divide both sides by 3
x = 36 / 3
= 12
x = 12
Blake will jog 12 blocks
