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3 years ago

* 1. Name a point on line n. 2. Name a segment on line m. 3. Name a ray with endpoint C. 4. Name three collinear points.

Mathematics

1 answer:

BlackZzzverrR [31]3 years ago

6 0

Answer:

1. D

2. AE (with a line above the 2 letters)

3. AC (with an arrowpointing to the right above the 2 letters)

4. B, A, and C

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3 years ago

Carlos solved the system of equations below. What mistake did he make in his work? (5 points)

Jlenok [28]

Multiplying -2 with the terms inside the bracket $x − 2(5 − 2x) = 10$ Carlos did a mistake. He found -2(5) = +10, but actually multiplying -2(5) we get -10

Step-by-step explanation:

We need to find the mistake in Carlos work.

The given system of equations is:

$2x + y = 5\\x-2y = 10$

He found value of y from eq(1) and put in eq(2)

$2x + y = 5\,\,\,eq(1)\\x-2y = 10\,\,\,eq(2)$

$y = 5 -2x\\x -2(5-2x) = 10$

Now multiplying -2 with the terms inside the bracket $x − 2(5 − 2x) = 10$ Carlos did a mistake. He found -2(5) = +10, but actually multiplying -2(5) we get -10 i.e

$x + 10 + 4x = 10\,\,\,(wrong)\\Correct\,\,answer\,\,would\,\,be:\\x-10+4x=10\\5x=20\\x=20/5\\x=4$

So, value of x =4

Putting value of x in eq(1)

$2x+y=5\\2(4)+y=5\\8+y=5\\y=5-8\\y=-3$

So, after correcting the mistake, the value of x=4 and y = -3

Keywords: Solving system of equations

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3 years ago

If a vertex point is in quadrant 3, then what quadrant would it be after a reflection in the X and Y axis?

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A point in Quadrant 3 reflected over the x-axis ends up in Quadrant 2.

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4 years ago

* 1. Name a point on line n. 2. Name a segment on line m. 3. Name a ray with endpoint C. 4. Name three collinear points.​

* 1. Name a point on line n. 2. Name a segment on line m. 3. Name a ray with endpoint C. 4. Name three collinear points.