This is Equilateral Triangle where all the angles are same.
The total angle of a triangle is 180. So angle 1 + angle 2 + angle 3 = 180. (angle 1 = angle 2 = angle 3)
60 + 60 + 60 = 180
all the angles equal to 180.
Now to find value of x:
We know from above information that the angle is equal to 60.
7x - 3 = 60
7x = 60 + 3
7x = 63
x = 63/7
x = 9
Answer: x = 9
Radius—r:
2r(3.14) = 81.64
6.28r = 81.64
r = 13
12.99m
A, because its reflecting off of the y axis
She spends 1/4 of her day at school, this would be 8 hours out of 24 hours. which would be 8/24=1/4. therefore she spends 14 hours with her friends (3/4)
