Answer:
(x-4) (x-1)
Step-by-step explanation:
X-4=0
x=4
X-1=0
X=1
He starts at a speed of 4 fps.
He adds 2 fps of speed during each of 3 seconds, for a gain of 6 fps.
At the end of the 3 sec, his speed is (4 + 6) = 10 fps.
We know nothing about the direction in which he runs, so we're in no position to discuss velocity. The best we can do is to determine his final speed.
Answer:
d) 30 inches
Step-by-step explanation: 300 divided by 10 is 30
3f-2-f would probaly be your answer
2040 = n/2(20+(n-1)4)
4080 = n(20+4n-4)
4080= 20n +4n^2 -4n
1020 = 4n + n^2
n^2 +4n -1020 =0
use common formula (can't write out so just look at answers. sorry)
which gives answers of n=-34 and n=30. since n can only be positive, n=30 so there are 30 rows. I liked that challenge
