The time taken by football to hit the ground is:
t=2.3561 sec.
The height(h) of the football at a time t is given by the equation:
Now, we are asked to find the time the ball will take to hit the ground.
i.e. we are asked to find the value of t when h=0
i.e.
( Since, on multiplying both the sides of the equation by -1 )
Now, we divide both the side of the equation by 4 to get:
We know that the solution of the quadratic equation of the type:
is given by the formula:
Here we have:
Hence, the solution is:
Also, we know that:
This means that:
time can't be negative.
Answer: $4
Step-by-step explanation:
If you have 2 Prego pasta sauces at $8 and you only want half of that (1), you divide 8 by 2 to get 4. 1 pasta sauce equals $4
Answer:
CP= SP*100\100+profit percent
CP=SP*100/100-loss percent
i hope you have understood