Answer:
4,12,36,106,324
Step-by-step explanation:
Identify the sequence, then use the formula to find the first term
- We know, sum of all angles of a triangle is 180°.
- Therefore, by the problem
72 + 64 + (4x+20) = 180
or, 156 + 4x = 180
or, 4x = 180 - 156
or, 4x = 24
or, x = 24 ÷ 4 = 6
<h3><em>Your </em><em>answer </em><em>is </em><em>6</em><em>.</em></h3>
Answer:
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Step-by-step explanation:

1.=9900
2.=9.3
3.= x= 12.2155
Hope this helps