Which of the following objects is best described by the term line segment?
o a. one side of a triangle
o b. the angle formed by two sides of a triangle
o c. the perimeter of a triangle
o d. the point where two sides of a triangle meet

Step-by-step explanation:

A line segment is the line formed between two points, so we can eliminate angles (those are two lines), perimeter(not a line either, the measure around a shape), and the point where 2 sides of a triangle meet (that's a vertex).

Therefore, a side of a triangle would be best described by the term line segment.

x = 3, y = - 9

Step-by-step explanation:

5x + 5y = - 30 (1)

2x - y = 15

-y = 15 - 2x

y = 2x - 15 (2)

From equations (1) & (2)

5x + 5(2x - 15) = - 30

5x + 10x - 75 = - 30

15x = 75 - 30

15x = 45

x = 45/15

x = 3

Plug x = 3 in equation (2)

y = 2*3 - 15

y = 6 - 15

y = - 9

Therefore,

x = 3, y = - 9

or

(x, y) = (3, - 9)