so hmm check the picture below, thus the ball hits 19 feet of height twice, once on the way up, and once on the way down, at about 0.64 seconds and at 1.17 seconds.
Answer: 4/9 = 0.44444444444...
just do 4/9 you will get it
Explanation:
For n=1, 19^n -13 = 19 -13 = 6, a multiple of 6.
For n = n+1, ...
19^(n+1) -13 = 19(19^n -13) +18·13
the factor (19^n -13) is divisible by 6 (for n=1), and ...
the factor 18·13 = 6·39 is divisible by 6.
Hence 19^n -13 is divisible by 6 for all n ≥ 1.
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Another way to look at this is to do modulo 6 arithmetic on the expression:
19^n -13 mod 6 = (19 mod 6)^n - (13 mod 6) = 1^n - 1 = 0
If the expression mod 6 is 0, then the expression is divisible by 6.
Answer:
201.06
Step-by-step explanation:
(πr2) = π(82) = 201.06
is it -12 cause, I've not done these in a long time but if you do 6 - (-12) you get 18 and 18 is bigger that 16. I hope it's right but I'm unsure.