Answer: (1) mean = 9.46; standard deviation = 3.74
Step-by-step explanation:
Step-by-step explanation:
In an equilateral triangle, all the three sides are equal as well as all the angles are equal. Let the angles be x.
We know that the sum of angles of a triangle is equal to 180 degrees. It means that,
x+x+x=180
3x=180
x=60°
Hence, if a triangle is an equilateral triangle, then the triangle has exactly three 60° angles. Hence, △ABC is an equilateral triangle
Open or closed? because if it's closed then the the answer is D
The second one if im not wrong
One is going 52 and the other 64
2 (x)+2 (x+12)=232 and solve