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Mathematics 20 Online
OpenStudy (anonymous):

Use the information in the diagram to determine the height of the tree. The diagram is not to scale.

OpenStudy (anonymous):

I got 30 as my answer is that correct @jim_thompson5910

jimthompson5910 (jim_thompson5910):

Hint: this is another midsegment problem (just written differently and it's not as obvious)

OpenStudy (anonymous):

okay... so it cant be 120 and it cant be 60...reworking the problem just now i got 28

jimthompson5910 (jim_thompson5910):

how did you rule out 60

jimthompson5910 (jim_thompson5910):

|dw:1355263576185:dw|

jimthompson5910 (jim_thompson5910):

|dw:1355263602371:dw|

OpenStudy (anonymous):

it said the diagram was not to scale so i just assumef

jimthompson5910 (jim_thompson5910):

well the tick marks show you that you're dealing with the midsegment

jimthompson5910 (jim_thompson5910):

|dw:1355263885359:dw|

OpenStudy (anonymous):

@jim_thompson5910 so 60

jimthompson5910 (jim_thompson5910):

correct

jimthompson5910 (jim_thompson5910):

|dw:1355266594908:dw|

OpenStudy (anonymous):

can you tell me if i did this problem correctly too

jimthompson5910 (jim_thompson5910):

ok one more

OpenStudy (anonymous):

hold on it takes a little bit to write

OpenStudy (anonymous):

Find the circumcenter of the triangle and my answer was (–4, –2)

jimthompson5910 (jim_thompson5910):

that's incorrect

jimthompson5910 (jim_thompson5910):

hint: the circumcenter is found by finding the intersection of the perpendicular bisectors

jimthompson5910 (jim_thompson5910):

|dw:1355266989233:dw|

jimthompson5910 (jim_thompson5910):

|dw:1355267002498:dw|

OpenStudy (anonymous):

i have no clue hoe to do this then... um the only other answer i could find was -5/2, -4

jimthompson5910 (jim_thompson5910):

find the midpoints of each side find the equations of the perpendicular lines through these midpoints find where the lines intersect

OpenStudy (anonymous):

oh wait its -5/2, -2

jimthompson5910 (jim_thompson5910):

yep

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