Alright 3 hours =315 because u add up both miles so per hour they move 105miles closer to each other so now we need to figure out how to get an extra 45 miles

anwser 3hours and 26.08695652173913 min

5 0

2 years ago

Suppose a1=12−12,a2=23−13,a3=34−14,a4=45−15,a5=56−16. a) Find an explicit formula for an: . b) Determine whether the sequence is

lorasvet [3.4K]

I'm going to assume you meant to write fractions (because if $a_n$ are all non-negative integers, the series would clearly diverge), so that

$a_1=\dfrac12-\dfrac12$

$a_2=\dfrac23-\dfrac13$

$a_3=\dfrac34-\dfrac14$

and so on.

a. If the pattern continues as above, we would have the general term

$a_n=\dfrac n{n+1}-\dfrac1{n+1}=\dfrac{n-1}{n+1}$

b. Note that we can write $a_n$ as

$a_n=\dfrac{n-1}{n+1}=\dfrac{n+1-2}{n+1}=1-\dfrac2{n+1}$

The series diverges by comparison to the divergent series

$\displaystyle\sum_{n=1}^\infty\frac1n$

4 0

1 year ago

Which of the following describes point H? (-3, 3) (3, 3) (-3, -3) (3, -3)

Dominik [7]

H (3,-3)

hope it helps

3 0

2 years ago

Read 2 more answers