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vesna_86 [32]
3 years ago
14

What is the product? - 2 5 5 [42] 7 22 18 ( 22 18 1 18​

Mathematics
1 answer:
AysviL [449]3 years ago
3 0

Answer:

the answer is D.

Step-by-step explanation:

multiply each row in the first matrix by each column in the second matrix.

[4*-2+2*7 4*5+2*-1]

simplify each element of the matrix by multiplying out all the expressions.

[6 18]

this matrix is already in the most simplified form.

[6 18]

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Answer:

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Step-by-step explanation:

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we know that

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step 1

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step 2

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step 3

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

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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

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step 2

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step 3

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

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