Answer:
5
Step-by-step explanation:
It's an equilateral triangle
answer is 2399
so yeah mhm yeah u d u m b
3^x + 3^2 = 90
Simplify the known power:
3^x + 9 = 90
Subtract 9 from both sides:
3^x = 81
Take the cubic root of both sides:
X = 4
1820
