Answer:
121°
Step-by-step explanation:
The angle with measure x is an exterior angle of the triangle.
The angles measuring 90° and 31° are the remote interior angles to the exterior angle.
<em>Theorem:</em>
<em>In a triangle, the measure of an exterior angle equals the sum of the measures of its remote interior angles.</em>
x = 31 + 90
x = 121°
Answer:
true
Step-by-step explanation:
just memorise it ........
Answer:
A
Step-by-step explanation:
A recursive formula allows the term in a sequence to be obtained from the previous term.
To find any term in the sequence multiply the previous term by the common ratio r
r = - 6 ÷ 2 = 18 ÷ - 6 = - 3
Thus the 9 th term can be found using
f(9) = f(8) × - 3 = - 3f(8) → A