SC mathematics Marathon (2 Viewers)

[friiedrice]

q24
sc 2009
cheers

 

[applepopper]

how do I do this? thanks guys

 

[goodie10]

http://www4.boardofstudies.nsw.edu.au/testResults.cfm?testID=14121949&testUUID=7CFF3F57-A22B-09D0-3DC54925186FBF19&question_id=2912&question_num=4&correctAnswer=B&user_answer=C&courseID=5010&testQuestionID=282836429
Can someone pleaaaasseee help me for this question, its impossible! it was on the SC Multiple Choice

 

[friiedrice]

http://www4.boardofstudies.nsw.edu.au/testResults.cfm?testID=14121949&testUUID=7CFF3F57-A22B-09D0-3DC54925186FBF19&question_id=2912&question_num=4&correctAnswer=B&user_answer=C&courseID=5010&testQuestionID=282836429
Can someone pleaaaasseee help me for this question, its impossible! it was on the SC Multiple Choice

6x8 = 48 boooooommmmmm

 

[goodie10]

6x8 = 48 boooooommmmmm

yea but why? whats the reason

 

[friiedrice]

yea but why? whats the reason

right angled triangles = bxhx.5 yh?
so thats just two of those triangles so that would be bxhx.5x2 which is just bxh

 

[nazfiz]

how do I do this? thanks guys

The midpoint of a circle's diameter is its centre.
so
4+x/2=1
-3+y/2=1
hence x=-2, y=5
so co-ordinates of A(-2,5)

 

[applepopper]

The midpoint of a circle's diameter is its centre.
so
4+x/2=1
-3+y/2=1
hence x=-2, y=5
so co-ordinates of A(-2,5)

Thanks nazfiz

 

[nazfiz]

Thanks nazfiz

no worries

 

[dionb2014]

How about we make this interesting, You post on BoS the moment you walk out of the exam ask proof you completed the 1 hour challenge.

 

[RealiseNothing]

How about we make this interesting, You post on BoS the moment you walk out of the exam ask proof you completed the 1 hour challenge.

Bit hard to get to a computer, plus I have to stay until it's over, school's rules lol.

 

[RealiseNothing]

how do I do this? thanks guys

To get from C to B, you go right 3 and down 4, you do the opposite to get to A, you go left 3 and up 4

So A is (-2,5)