5) Given ST = 22, find the probability that a dart thrown at random will hit in the shaded region. Show the formulas you used and the work you did to solve this problem.
P
73
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its 7

Step-by-step explanation: 2+2=fish

answer: no, but if it does it's a obvious pattern.

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