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anonymous
 one year ago
check my answer plz?
State whether the given measurements determine zero, one, or two triangles.
A = 36°, a = 3, b = 9
I got zero
anonymous
 one year ago
check my answer plz? State whether the given measurements determine zero, one, or two triangles. A = 36°, a = 3, b = 9 I got zero

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you! Can you also check two more questions for me?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.01. Determine whether the vectors u and v are parallel, orthogonal, or neither. u = <1, 2>, v = <4, 8> I got Neither. 2. Evaluate the expression. r = <9, 7, 1>, v = <2, 2, 2>, w = <5, 2, 6> v ⋅ w I got <10, 4, 12>

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1As you can see, a = 3 is too small to make a triangle. dw:1439433596024:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes, a was 3 and b was 9 as indicated int he question

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1439433919847:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Slope of <1, 2> = 2/1 = 1 Slope of <4, 8> = 8/4 = 2 Since 1 and 2 are not negative reciprocals, the vectors are not perpendicular. Since 1 and 2 are not equal, the vectors are not parallel.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0And my last one is okay as well?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1The dot product of two vectors is a scalar, just a number.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1v ⋅ w = <9, 7, 1>⋅ <5, 2, 6> = 9(5) + (7)(2) + (1)(6) = 45 + 14  6 = 37
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