which algebraic expression has a term with a coefficient of three A: -2y+5+3 B: 3(y-6) C: 3y+1 D: 5y-7
2 answers:
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if the diameter is 20, the its radius must be half that or 10.
Answer:
(-3, 7)
General Formulas and Concepts:
<u>Algebra I</u>
Functions
Graphing
- Reading a Cartesian Plane
- Coordinates (x, y)
Solving systems of equations by graphing
Step-by-step explanation:
Where the 2 equations intersect is the solution to the systems of equations.
Answer:
D
Step-by-step explanation:
Given
x² + 6x - 9 = 0 (add 9 to both sides )
x² + 6x = 9
Using the method of completing the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(3)x + 9 = 9 + 9
(x + 3)² = 18 ( take the square root of both sides )
x + 3 = ± = ±
= ± 3
Subtract 3 from both sides
x = - 3 ± 3 → D