3/9 + 1/2 = 5/6
2 1/3 + 2 1/4 = 4 and 7/12
I don’t really know? What grade is this?
Answer: 
Step-by-step explanation:
Given
The diameter of a circle is 
So, the radius is 
The circumference is given by 
Insert the values
Thus, the circumference of the circle is
Answer:
A. 27
Step-by-step explanation:
21 x 3 = 63
9 x 3 = 27
A scalene triangle can never be an isosceles triangle. How? Well, let's take a look at the definition of a scalene triangle. In short, a scalene triangle is a classification of a triangle that does not have any congruent sides. On the other hand, an isosceles triangle is a triangle in which its legs are both congruent. Therefore, if a scalene triangle has two congruent legs, it wouldn't even be a scalene triangle, but instead it would be an isosceles triangle. Hope this helped!
