Answer:
30
Step-by-step explanation:
3:7
30 students
3\10×30=9
7\10×30=21
9+21=30
It would be d because she is choosing a line of reflection so she would us a parallel line to line it up to the side of the polygon
Answer:
all 3 sides are the same length
An angle with a measure that equals the measure of a square corner, because the angle of a square equals 90
The addition of the algebraic expression of 3x²y, -5x²y, -x²y is; -3x²y
Algebraic addition:
According to the question;
- We are required to add the algebraic terms; 3x²y, -5x²y and -x²y
Since all terms have the same combination of algebraic variables and only differ in coefficient the sum is;
Therefore, the algebraic expression 3x2y, -5x2y, -x2y when added is equivalent to - 3x²y
Read more on algebraic addition;
brainly.com/question/4344214