1 year ago

1. Sixty-four unit cubes were glued together to make a 4 × 4 × 4 cube. How many 1 × 1 pairs

Mathematics

1 answer:

blagie [28]1 year ago

5 0

Answer:

The answer is 56 and that is no guess

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Step-by-step explanation:

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Which number from the set {5, 10, 15, 18} makes the equation true?

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3 years ago

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marishachu [46]

The sum of all the measurements is just the average times the number.

$\bar x = \frac{1}{n} \sum_{i=1}^n x_i$

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So if the average of all 92 is 7 the sum of those is $92 \times 7$

The average of the last two is 7.2 so their sum is $2 \times 7.2$

That means the sum of the first 90 is $92 \times 7 - 2 \times 7.2$

so the average of the first 90 is

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