9(-2)+x=-8
And x would be positive 26
You are given that all three sides are equal. You also know that all three angles are also equal. Therefore since all three angles are equal and every triangle has 180 degrees, each angle is 180/3 = 60
So
7x - 3 = 60 Add three to both sides
7x - 3 + 3 = 60 + 3 Combine
7x = 63 Divide by 7
7x/7 = 63/7
x = 9 And that's your answer.
Answer: 47 meters
Step-by-step explanation:
The equation for the diameter of a circle is 
, so we just multiply the diameter (15) by 
. 
, or roughly 47.1238898038. Rounded to the nearest meter, 47 meters. Also, happy pi day!
