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Daniel [21]
3 years ago
10

2(r+3)=__r+__ please help me my teacher is driving me crazy

Mathematics
2 answers:
d1i1m1o1n [39]3 years ago
5 0

Step-by-step explanation:

\huge\bold\purple{    2,3   }

evablogger [386]3 years ago
5 0
The answer is 2r+6

Explanation: because the parentheses by the 2 indicate that we multiply everything in the parentheses so r x 2 and 3 x 2 getting us to our answer
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Help Pleasee<br><br> Reflect shape A in the line x = -2
Cerrena [4.2K]

Answer: Check out the diagram below

The reflected image is shown in red.

=================================================

Explanation:

Draw a vertical line through -2 on the x axis. This is the mirror line.

Now focus on the upper right corner of the figure, which is at (-3, -1). Notice how the horizontal distance from this corner point to the mirror line is exactly 1 unit. If we move another 1 unit to the right, then we'll arrive at (-1,-1) which is where the reflected point lands or ends up.

In short, the upper right corner point (-3,-1) reflects over x = -2 to land on (-1,-1)

----------------------

As another example, the upper left corner point (-5, -1) will move exactly 4 spaces to the right to get to the mirror line. Then we move another 4 spaces to the right to get to (2,-1).

So the upper left corner (-5,-1) will ultimately move to (2,-1) after the reflection over x = -2.

Apply these steps to the other corner points and you'll end up with what is shown below.

Take note that a point like A(-5,-1) moves to A'(1,-1), and similar to the other points as well. Also, notice that when going from A to B to C, etc we are moving clockwise. We move counterclockwise when going from A' to B' to C' etc. Reflections always swap the orientation.

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