14 Exercises

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course mth151

011. How many triangles?

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Question: `q001. . There are five questions in this set.

Draw four points in a square pattern (i.e., if the points were properly connected, they should form a square). From each of the points, draw a straight line to each of the other points. How many lines did you draw?

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Your solution: 6 lines

confidence rating #$&*: very confident

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Question: `q002. How many triangles are there in the figure you drew?

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Your solution: 8 triangles

confidence rating #$&*: very confident. i drew them on paper

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Question: `q003. The lines you drew should form a square with its two diagonals. Label the corners of the square A, B, C and D, going in order around the square, and label the center where the diagonals cross E. Now list all possible combinations of 3 of the letters A, B, C, D, E (note: combinations don't care about order, so A D E is the same as D A E or E A D or any other combination of these same three letters, so list each possible combination only once. That is, if you list for example ADE you won't list DAE).

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Your solution:

AEB

BED

DEC

CEA

ABD

ACD

CAB

CDB

confidence rating #$&*: very confident

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Question: `q004. Of the 10 combinations ABC, ABD, ABE, ACD, ACE, ADE, BCD, BCE, BDE, CDE, which form triangles on your figure?

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Your solution:

ABD

ABE

ACD

ACE

ABC

BCD

CDE

confidence rating #$&*: very confident

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Question: `q005. Sketch the same figure as before, but without the line segment from A to B. Now how may triangles are there?

Your solution: 5 triangles

confidence rating #$&*: very confident

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011. `Query 11

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Question: `qQuery 1.4.24 1 to any power is what?

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Your solution: 1

confidence rating #$&*: very confident

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Question: `qQuery 1.4.30 sqr of neg gives what?

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Your solution: it results in an imaginary number.

http://answers.yahoo.com/question/index?qid=20080102211337AAuMevI

confidence rating #$&*: very confident

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Question: `qQuery 1.4.42 drawer has 18 compartments; how many drawers to hold 204 tapes?

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Your solution: 11 full drawers and 3 compartments of a 12th drawer.

confidence rating #$&*: very confident

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Self-critique (if necessary):

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Self-critique rating:

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