from question d = 16t^2 = 56-4t
=》 16t^2 -56 + 4t =0
=》 4t^2 - 14 + t = 0
=》 (4t-7)(t+2) =0
=》 t = 1.75 seconds
The answer is 5 x 4 x 3 x 2 x 1 or 5! (! = factorial)
It is a permutation, as the order matters.
There are 120 ways they can form a line.
Answer:
No, yes, yes, yes, no, no, yes, no, yes, no, no, yes
Step-by-step explanation:
Explanation is in the comments by the way.
The answer is b. If you solve for x you get -3 and then do 138-3
Answer:
d 13
Step-by-step explanation:
Subtracting means adding the opposite.
To subtract -4, you add the opposite of -4 which is 4, so you add 4.
9 - (-4) = 9 + 4 = 13
Answer: d 13
