Answer:
t = 4 seconds
Step-by-step explanation:
The height of the projectile after it is launched is given by the function :
t is time in seconds
We need to find after how many seconds will the projectile land back on the ground. When it land, h(t)=0
So,
The above is a quadratic equation. It can be solved by the formula as follows :
Here, a = -16, b = 32 and c = 128
Neglecting negative value, the projectile will land after 4 seconds.
Answer:
The final cost for him is;
Explanation:
Given that the ipod costs $220;
The store gives a 35% discount, which means he will only pay 65% of the original cost;
The store price is;
Also he will need to pay additional 8% sales tax on the discounted price P;
The final cost he need to pay is the sum of the discounted price and the sales tax;
Therefore, the final cost for him is;
Answer:
Area= 7234.56
Step-by-step explanation:
area= πr²
diameter= 96
so that means radius is 48
= 7234.56