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ruslelena [56]
3 years ago
5

Solve for this Variable. 5z - 2 = 2 (3z - 4)

Mathematics
2 answers:
faust18 [17]3 years ago
6 0

Distribute the 2 with the (3z-4) after distributing the 2, your answer would look like this: 5z-2=6z-8

then you would add 2 to both sides and your equation would look like this:          5z=6z-6

next you would subtract the 6z to both sides and your equation would look like this:  -z=6

I think that is your answer sorry I tried.

aleksley [76]3 years ago
5 0
5z-2=2(3z-4) \\  \\ 5z-2=6z-8 \\  \\ 5z=6z-6 \\  \\ -z=-6 \\  \\ z=6
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Answer:

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Step-by-step explanation:

1. Since Jo’s house is reflected across both axes, we must reflect the coordinates two times. So we can reflect the coordinates of Kianna’s house across the x-axis first, which would give you the coordinates (4,-2). Then we reflect (4,-2) across the y axis, giving us the coordinates (-4,-2). So Jo’s house has the coordinates (-4,-2).

3. Since Elena’s house is only a reflection of Jo’s house across the x-axis only,  we can reflect Kianna’s house’s coordinates (4,2). When we reflect (4.2) over the x-axis, that gives us the coordinates (4,-2). So therefore Elena’s house has the coordinates (4,-2).

4. Kianna is incorrect, if Elena’s house was a reflection of her house across the y-axis, the coordinates would be (-4,2).

(A reflection can be thought of as folding or "flipping" an object over the line of reflection. The original object is called the pre-image, and the reflection is called the image.)

Hope this helps.

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