6 sec can take penny to strike the ground.
Solution:
Given data:
feet
feet

Re-arrange the terms from greatest degree to smallest degree.

We can solve it by applying quadratic formula,

Here a = –16, b = 48, c = 288




Now, write find two t's using plus and minus operation.


t = –3 (or) t = 6
We cannot write time is negative. so neglect t = –3.
Therefore t = 6.
Hence 6 sec can take penny to strike the ground.
Answer:
42 because 3 tens is 30 and 12 ones is 12. so you do 30 + 12 = 42
I believe that the answer is A- 8600-5300
Hope this helps!
7.5 percent equals to 7.5/100
Hence ,
7.5 × 80 = 6