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serg [7]
3 years ago
13

A number subtracted from -23 amounts to 169.

Mathematics
1 answer:
ss7ja [257]3 years ago
8 0
-192 because if you set this up algebraically it is easy to find x (the number you are trying to find).  -23-x=169. Add 23 to the other side. -x=193. divide by -1. x=193
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Part 2) The total surface area of the paperweight is 400\ cm^{2}

Step-by-step explanation:

Part 1) what is the volume of the paperweight?

we know that

The volume of the paperweight is equal to the volume of the square pyramid plus the volume of the cube

step 1

Find the volume of the pyramid

The volume of the pyramid is equal to

V=\frac{1}{3}BH

where

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step 2

Find the volume of the cube

The volume of the cube is equal to

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step 3

Find the volume of the paperweight

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Part 2) what is the total surface area of the paperweight?​

we know that

The total surface area of the paperweight is equal to the surface area of 5 faces of the cube plus the lateral area of the pyramid

step 1

Find the surface area of 5 faces of the cube

SA=5b^{2}

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step 2

Find the lateral area of the pyramid

LA=4[\frac{1}{2}bh]

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step 3

Find the total surface area of the paperweight

320\ cm^{2}+80\ cm^{2}=400\ cm^{2}

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