Answer:
77.
Step-by-step explanation:
an = a1 + (n-1)d where d is the common difference.
a12 = a1 + 11d
22 = a1 +11(-5)
22 = a1 - 55
a1 = 22 + 55
a1 = 77.
Answer:

Step-by-step explanation:
<em>SR</em><em> </em>is slightly longer than <em>TS</em>, so with that being stated, we cannot use this theorem for this triangle.
I am joyous to assist you at any time.
Subtract 3y from each side of the equation.