In Kendall’s back yard play areas he swings are 11.3 feet wide. The slide is 6 1/5feet wide. In decimal form, what is the total width of swings and slide ?

, 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

show us the triangle so we can answer it

3xy cannot be combined with the others

2x, -5x and x are like terms