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UNO [17]
3 years ago
7

An easy way to determine the slope of a roof is to set one end of a 12-inch level on the roof surface and hold it level. Then ta

ke a tape measure or ruler and measure from the other end of the level down to the roof surface. This will give you the slope of the roof.
The slope of the roof shown here is measured with a 12-inch level and a ruler.


What is the slope of the roof in this picture?

Mathematics
1 answer:
rodikova [14]3 years ago
4 0

Answer:

7/12

Step-by-step explanation:

m=rise/run

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Answer:

  1.3363

Step-by-step explanation:

The basic idea here is to find an expression for the direction vector between a point on L1 and a point on L2. Then, solve for the points on L1 and L2 that make that vector perpendicular to both lines L1 and L2. (The dot product of direction vectors is zero.) The distance between the points found is the shortest distance between the lines.

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Let P be a point on L1. Then the parametric equation for P is ...

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The dot product of this and the two lines' direction vectors will be zero:

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Then (Q-P) becomes (94, -1551, 564)/1237, and its length is ...

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