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lianna [129]
3 years ago
14

HELP I NEED HELP ASAP

Mathematics
1 answer:
allochka39001 [22]3 years ago
7 0

9514 1404 393

Answer:

  A.  (0, 5), (5, 1)

Step-by-step explanation:

The midpoints of the diagonals of a parallelogram are the same point. This means the sum of the opposite vertex coordinates will be the same.

For the given diagonal, the sum of end point coordinates is ...

  (-2, -3) + (7, 7) = (-2+7, -3+7) = (5, 4)

__

This means we're looking for a pair of coordinates whose sum is (5, 4).

  A: (0, 5) +(5, -1) = (0+5, 5-1) = (5, 4) . . . . . . the points we want

  B: (0, 4) +(4, -1) = (4, 3) . . . not it

  C: (-1, 5) +(5, 0) = (4, 5) . . . not it

  D: (-1, 4) +(4, 0) = (3, 4) . . . not it

__

In the attached, the blue line segment is the only one that passes through the midpoint of the given diagonal. It has end point coordinates

  (0, 5) and (5, -1) . . . matching choice A

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To find slope of two points connected by a line, you have to use the formula y_{1}-y_{2} divided by x_{1}-x_2. Do six minus one or one minus six and find the absolute value (5). Now divide that by -4-(-5) or -5-(-4) and find the absolute value (1). 5/1. The slope is five. 
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3(x + 5) − 3 = 52 − 2x
Anna11 [10]

Answer: The value of x is 8

Step-by-step explanation:

3(x + 5) − 3 = 52 − 2x

First open the bracket, and do multiplication

3x + 15 - 3 = 52 - 2x

3x + 12 = 52 -2x

Collect like terms, and make the whole expression equal to zero

3x + 12 - (52 - 2x) = 0

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Divide both sides by 5

5x/5 = 40/5

x = 40/5

x = 8

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The average age of a group of teachers and professors is 40. If the teachers and average 35 years and the professors 50 years, t
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2:1

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Explanation needed
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Answer:

A‘‘ (1,6)

Step-by-step explanation:

after a reflection about a horizontal line the x coordinates remain the same

the middle point of the segment AA’ lies on the line so it has y = -1

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we can use the same reasoning to find the reflection about y = 1

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A‘‘(1,6)

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3 years ago
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