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scoundrel [369]
2 years ago
6

Evaluate the expression below: n +n + n for n = -1 Ez points for anyone

Mathematics
2 answers:
Andreas93 [3]2 years ago
6 0

Answer:

-3

Step-by-step explanation:

  1. Plug -1 in: -1^{2} + -1^{2} + -1^{2}  
  2. Simplify: -1 + -1 + -1
  3. Simplify: -1 - 1 - 1
  4. -1 - 1 - 1 = -3

I hope this helps!

Vikentia [17]2 years ago
6 0

Answer:

3

Step-by-step explanation:

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Answer:

(8, -9), (11, -9)

Step-by-step explanation:

The points (5, 7) and (7, 7) are on a horizontal line in which the y-coordinates of all points are 7. The line has equation y = 7.

For a line to not intersect the line y = 7, it must be parallel to y = 7.

The answer is the pair of points which both have the same y-coordinate, and that y-coordinate is not 7.

From the choices you added to your comments, the only choice with two points with the same y-coordinate is (8, -9) and (11, -9). This is the answer.

Answer: (8, -9), (11, -9)

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Please show me how to solve for Xsquared - 21.75X = -15.75. I have the solution but do not know how to solve it.
Andreas93 [3]
x^2-21.75x=-15.75 \\
x^2-21.75x+15.75=0

Use the quadratic formula:
x^2-21.75x+15.75=0 \\ \\
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\boxed{x=\frac{3}{4} \hbox{ or } x=21}
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Answer:

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Step-by-step explanation:

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