Atriangle is 2/5 square foot

using the formula a=1/2bh determine the length, in feet, of the base of the triangle

a 24/25
b 25/24
c 2/3
d 3/2

, 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

dont know

step-by-step explanation:

too hard the other guy did it

step-by-step explanation:

did u ever get the answers? i need