The first four terms of a sequence are 98,94,88,80 a)whats the
i) next term
ii) expression for the nth term of the sequence

b)calculate the
i)50th term
ii)value of n for which the nth term is -500​

question is incomplete.

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)