The system of equations can be solved using linear combination to eliminate one of the variables.
2x - y = -4 10x - 5y = -20
3x + 5y = 59 - 3x + 5y = 59
13x = 39
which equation can replace 3x + 5y = 59 in the original system and still produce the same solution?
2x - ya 4
10x - 5y = -20
7x = 39
13x = 39

Precalculus question, image attached.

How is the equation of this circle written in standard form? x2 + y2 - 6x + 14y = 142 a) (x - 3)2 + (y + 7)2 = 200 b) (x+ 3)2 + (y - 7)2 = 200 (x - 6)2 + (y + 14)2 = 142 d) (x+6)2 + (y- 14)2 = 142

Identify all the cases where non-probability sampling is used when attempting to study the characteristics of a large city. studies on every subject in the population divide a population in groups and obtain a sample studies with a limited amount of time demonstrate existing traits in a population studies with the nth person selected