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max2010maxim [7]
3 years ago
12

How many different pairs of parallel edges are there on a rectangular solid?

Mathematics
1 answer:
Monica [59]3 years ago
4 0

Answer:

18

Step-by-step explanation:

A rectangular prism has four parallel edges along its length, four parallel edges along its width, and four parallel edges along its height.

We want to know how many different pairs of parallel edges there are.  Starting with the length, the number of unique pairs is:

₄C₂ = 6

The same is true for the width and height.  So the total number of different pairs of parallel edges is:

3 × 6 = 18

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4 years ago
Who was the first Democratic elected president of Nigeria
likoan [24]

Answer:

Alhaji Shehu Shagari

Step-by-step explanation:

Alhaji Shehu Shagari the first Democratic elected president of Nigeria, He was elected in October 1979. He contested under the The National Party of Nigeria. Prior to that time, Nigeria had been under military rule for more than 13 years.

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3 years ago
Solve for x in the figure below
fredd [130]

Answer:

x = 35.4

Step-by-step explanation:

Sum of all interior angles in a triangle = 180°

Therefore:

(x + 2)° + (2x + 2)° + (2x - 1)° = 180°

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Collect like terms

x + 2x + 2x + 2 + 2 - 1 = 180

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Subtract 3 from each side

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Divide both sides by 5

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3 0
3 years ago
Which equation represents the line that contains the point (-2, 9) and is perpendicular to the line y = 2x + 6?
olganol [36]
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7 0
4 years ago
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Answer:

5 seconds it will hit the water.

Step-by-step explanation:

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-16t²=-400

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8 0
3 years ago
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