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Mathematics: Post your doubts here!
- Thread starter XPFMember
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you have there triangle calculate its area(A1)-> to find distance and subtract it from hamids distance(A2)
A=A1-A2
A=60*14/2-4*60=420-240=180 m
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could you tell me about the nest question? I am getting it wrong i have a problem with the question saying near to B than to A that means we should color Byou have there triangle calculate its area(A1)-> to find distance and subtract it from hamids distance(A2)
A=A1-A2
A=60*14/2-4*60=420-240=180 m
you should find bisector of points A and B.... and shade that part which is closer to B
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when i do it i cover the R region http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w12_ms_21.pdf here have a look at the marking scheme the B region has the R if i sade it it won't become so is the Ms wrong?
mark sheme shows good answer...
see there is bisector betwer A and B
and there is circle 4cm radius
and shaded region must be there where is written R
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135*10^2 HERE WE USE ^2 because it is AREA and for Volume we use 10^3 that's the rule
408000/10^3 see
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Ohhh now i get it so i should erase all the outer part?mark sheme shows good answer...
see there is bisector betwer A and B
and there is circle 4cm radius
and shaded region must be there where is written R
no dont erase just shade area where they concur
but y 10^2*135? we r converting 135 into volume so it should be 135*10^3?135*10^2 HERE WE USE ^2 because it is AREA and for Volume we use 10^3 that's the rule
408000/10^3 see
you converting it into area
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Because you have to find the model which i 1/10 solemme teach you a little basics
1/ 10 is in size that the reason it does not have ^2 0r ^3
so the model is the small one so it is 1/10 of whatever the real is; IF REAL IS 10 THEN MODEL IS 10*(1/10) or r-20 then m-20*(1/10) get it??
Now If we are changing AREA which is in square you know that area's are square!!; If real is 100 then Model will be 100*(1/10)^2 And if volume Cube ;If real is 300 then the model will be 300*(1/10)^3
Your question why Dividing From Real to Model is Multiplying
and from Model to real is dividing
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Guys when they ask u find the equation of a line that is perpendicular to, what do we dO?
can you give us exact question...
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if the gradient of the given line is m, then the gradient of its perpendicular would be -1/m. Take the common point and use it to find c
plz help me to solve this http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s11_qp_23.pdf question no 5
a = -1
b= 2
on graph is parabola and it is formed by quadratic formula - x^2 it is upside down and integer is negative (e.g. -1 )