3ft and 11in is the correct answer
Answer:
I think D would be the answer.
Step-by-step explanation:
The most people would see it on the website, making it, if you ask me, the most likely answer.
Answer:
2x^2+16x+10
Step-by-step explanation:
(2x+4)^2-(2x^2+6)
(2x+4)(2x+4)-2x^2-6
4x^2+8x+8x+16-2x^2-6
4x^2-2x^2+16x+16-6
2x^2+16x+10
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.
17 = C, 19 = B and 18 = A