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3 years ago

81 is three times a number

Mathematics

2 answers:

DENIUS [597]3 years ago

5 0

81/3=27 so, 3x27=81

Vitek1552 [10]3 years ago

3 0

The answer is 27. It is 27 because twenty seven multiplied by three is 81.

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Need answers for parallelogram LMNO

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ArbitrLikvidat [17]

Answer:

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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?

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The volume of the pyramid is equal to

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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?

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

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Find the surface area of 5 faces of the cube

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2 years ago

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Andrew [12]

Answer:

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∠C → opposite side → AB

The sides AB and AC are equal. Make an equation:

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$2x+7=3x-7+7\\\\2x+7=3x$

Subtract 2x from both sides:

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:Done

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