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can someone please solve this thanks.
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can someone please solve this thanks.
View attachment 41294
this too plsss
16 (a).. AB=coordinates of B - coordinates of Aahmadumar
Awesome12
i even need answer to 2nd pic 1st part forgot to underline
View attachment 41306 View attachment 41307
Alright here goes.cn any1 plz ans thx quick ................View attachment 41302
ya d first part is wat u do always for the column vector..n d last part if d ques askd "find AC" den d answer wld have been (18, 12) but as dey have askd d coradinates of C which will b AC plus A b'coz for point C u'll have 2 start counting d points from A... so it will b AC+coordinates of A...did u gt it?? Actually i'm really bad @ explaining stuff especially dis way...sooo sry if it dint help...i tried my bestthanx but can u plz explain the first part like always to find column vector we do this and last part i couldn't get it
thnxAlright here goes.
First of all part a) is asking you to convert from kilometres per hour to metres per second.
1 kilometre= 1000 metres.
144 kilometres = 140 x 1000 = 144,000 metres
now convert the hours to seconds.
1 hour = 60 minutes. 1 minute = 60 seconds.
So 60 minutes = 60 x 60 seconds = 3600 seconds.
144,000 / 3600 seconds = 40 metres / second.
Now for part b), it's basically asking you how long it will take for <--------------------------> to pass <------>
The train is 120 "metres", but the speed it is traveling at is in kilometres/hour.
You already converted the speed in part a) the speed the train is traveling at is 40 m/s.
Speed = Distance / Time
Time = Distance / Speed
Distance = Speed x Time
We need to find the time taken for it to pass the bridge which is 20m, So use the time formula.
Your distance to cover is the length of the train + the width of the bridge. That's the total distance.
Distance = 120 + 20 = 140
The speed at which it's traveling at is 40 m/s.
So Time = 140 / 40 = 3.5 seconds.
Hope that helped.
c d statement b4 d ques it says AC=2AB right?? multiply ur answer in (a) wid 2..now d answer dt u gt will b AC...den add dis AC wid d cordinates of A n u will get C...dey are asking us C so hw will dey give us dtthanx but they havent given us c so how can we first find out c
That makes a lot more sense than what I did, thanks!
Check your inbox.thx one also plzView attachment 41320
do u kno d method of splitting d middle term n factorising?? it has d same concept here..thx one also plzView attachment 41320
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