After scoring a touchdown the Billy's lined up for the kickoff the kicker kicks the football 60 yards deep into the end zone to hang time on the ball was 8.5 seconds what was the average speed of the ball?

what is the approximate angle of acb if abc is 25cm and the length of segment bc is 15

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