A railway system on a hillside moves passengers at a constant rate to and elevation of 50 m

, 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

exactly you go it

step-by-step explanation:

try soting them out first

step-by-step explanation:

160 cm

step-by-step explanation:

you have to add all the sides together