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SVEN [57.7K]
3 years ago
8

Help plz I don’t understand #geometry

Mathematics
1 answer:
Bingel [31]3 years ago
7 0
1. x=5
Explanation:
2(2x-3)=x+9
4x-6=x+9
-x -x
3x=15
x=5

2. x=-9
Explanation:
2(x+19)=x+29
2x+38=x+29
-2x -2x
9=-x
-9=x
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Step-by-step explanation:

I think your question is missing key information and the one below is similar to yours. Hope it will find you well:

"Alex has a block of wood that is in the shape of a rectangular prism dimensions 70 cm by 50 cm by 30 cm.  He cuts a 10-cm square hole through the center of the prism. What is the volume of the remaining solid?

Here is my answer:

The volume of the rectangular prism: 70∗50∗30=105000 cm^{3}

The volume  in the center (intersection of “square holes”): 10∗10∗10=1000 cm^{3}

=> the volume of the remaining solid = The volume of the rectangular prism - The volume  in the center = 105000 - 1000 = 104000cm^{3}

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