Answer:
Decay
Step-by-step explanation:
Staring at 3000 every y = half of the previous one.
What distance did he cover? well, he went 5km first, then 3km, then 1km, 5 + 3 + 1, is how much he covered.
what was his displacement? well, he has a north displacement of 6, 5 + 1, and a horizontal displacement of 3, check picture below.
so, his total displacement is "c" northeast.
Answer:
0.13
Step-by-step explanation:
V=a3=0.53=0.125
9514 1404 393
Answer:
B, D
Step-by-step explanation:
The quadratic expands to ...
(2n -1)² = (2n)² +2(2n)(-1) +(-1)² = 4n² -4n +1
The coefficients can be factored out of the sum, so ...
∑(4n²) = 4∑n² for example
The sum of 60 ones is 60:

So, the sum can be written as ...

_____
It appears that the key to choosing the correct answers is paying attention to signs.