Completing the square is done as follows:
1. Write the equation in a way that the constants are in the right side while the terms with x are on the left.
<span>9x2 +54x = 7
</span>
2. Make sure that the coefficient of the x^2 term is 1.
<span>9(x2 + 6x) = 7
</span>
3. Adding a term to both sides that will complete the square in the left side. This is done by dividing the coefficient of the x term by 2 and squaring it. Note: The same amount should be added to the right side to balance the equation.
<span>9(x2 + 6x + 9) = 7 + 81
9(x+3)^2 = 88
</span>
Answer:
a human
Step-by-step explanation:
A polygon that has both reflectional and rotational symmetry includes:
- B. Square
- C. Triangle
- E. Equilateral Triangle.
<h3>What is a polygon?</h3>
A polygon is a closed curve made up of a set of line segments (sides) connected in such a way that no two segments cross.
Examples of polygons are triangles (three sides), quadrilaterals (four sides), and pentagons (five sides).
Triangle, square, and other quadrilaterals have both line symmetry and rotational symmetry.
Thus, a polygon that has both reflectional and rotational symmetry includes Options B, C, and E.
Learn more about polygons and reflectional and rotational symmetry at brainly.com/question/1592456 and brainly.com/question/18633533
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Answer:
look it up. maybe
Step-by-step explanation:
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Answer:
Solve: x < 3 Graph: *attached* Interval Notation: (-∞,3)
Step-by-step explanation:
Solve:
combine like terms
Add 6 on either side of the inequality
Divide by 6 on either side of the inequality
Graph:
*see attachment*
Interval notation:
(-∞ , 3)
