Answer:
39 is the 13th term
Step-by-step explanation:
Okay so essentially the 
is just a substitute for x.
See how in the equation they put n into the x spot:
They changed the variable names:
Now we know what the n actually means, plus when they ask about the terms youre trying to find it's based off of that n:
When they say, 13 term, they mean 
which would be the 13th answer in the series. So the first term would be based off of 
So whatever number is in the n position by a is what you'll be plugging into the x spot.
These are all the answers leading up to the 13th term they asked for, and you can continue thus same equation with whatever number you can put into the n space.
Answer:
C should be the correct answer
Answer:
Step-by-step explanation:
hello,
let's note a the number of novelists and
b the number of poets.
we know that a = 5/3 b as "enrolls novelits and poets in a ratio of 5:3"
it comes 3a=5b which is the first equation
and we know that a + b = 24 "there are 24 people"
we we have two equations
(1) 3a - 5b = 0
(2) a + b = 24
let's multiply (2) by 3 it comes 3a + 3b = 24*3 = 72
let's do 3*(2) - (1) it comes
3a + 3b -3a + 5b = 72 - 0 = 72
so 8b = 72
so b = 9
and then we replace b in (2) it comes
a = 24-9 = 15
hope this helps
position = s(t) = (t)In(5t)
velocity = ds/dt = t d/dt (ln (5t)) +d/dt (t) ln (5t)
= t * 5 1/5t + ln (5t)
= 1 + ln (5t)
acceleration = dv/dt = d^2s/dt^2 = d/dt (1 + ln(5t))
=d/dt (1) + d/dt (ln 5t)
= 0 + 1/5t * 5
= 1/t
0 = 1 + ln (5t)
-1 = ln (5t)
e^-1 = 5t
1/e = 5t
1/(5e) =t
acceleration = 1/t = 1/(1/5e) = 5e
Answer: 5e
