(15 pts) what is 538.78314 rounded to the nearest tenth?me asap! you

How to get this

The first step is to locate the tenths decimal place, which just to the right of the decimal point. So the "7" is in the tenths place.

Look one spot further to the right. We see the value 8 here. Since 8 is larger than 5, it tells us to bump the prior "7" up by 1 and

This means 538.78 turns into 538.8

You can think of it as saying "78 is closer to 80, rather than 70" which is why we round the "0.78" portion up to "0.80"

note: 538.8 is the same as 538.80; the zero at the end has no effect on changing the value.

so what is the question

step-by-step explanation:

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for