@hellodelhi said: kindly explain....
answer of 2nd is D????
hello puys...
mere paas statistics k paper (15th sep) ka bhi call aya hai alongwith maths n eng paper on 16th and i think i m eligible for it but i even dont know what kind of exam its going to be ...
should i skip this stats paper or.....???????
Q. A mixture contains 80% acid and rest water.Part of the mixture that should be removed and mixed with same amount of water to make the ratio of acid and water 4:3 is ??
Answer wid xplanatn plzz
@pathakrahul said: a man borrowed 40000 at a interest of 8% si per yr.at the end of second year he paid back certain amount and at the end of fifth year he pad back rs 35960 and cleared the debt. what is the amount did he paid back after 2 year
14040?
@anurag1701 said: Q. A mixture contains 80% acid and rest water.Part of the mixture that should be removed and mixed with same amount of water to make the ratio of acid and water 4:3 is ??Answer wid xplanatn plzz
taking water percentage
20%............100%
........300/7%
400/7...........160/7
ie 5:2
new mixture contain 2/7 of second mixture ie 2/7 is removed and then added
is that an answer
@anurag1701 said: Q. A mixture contains 80% acid and rest water.Part of the mixture that should be removed and mixed with same amount of water to make the ratio of acid and water 4:3 is ??Answer wid xplanatn plzz
28.xx percent bhai option de dete toh jaldi ho jata
and also someone pleasse tell me
cos(180+theta) and also (270+theta) kya hota hai????
@anurag1701 said: Q. A mixture contains 80% acid and rest water.Part of the mixture that should be removed and mixed with same amount of water to make the ratio of acid and water 4:3 is ??Answer wid xplanatn plzz
is it 2/7 ???
@gudda1122 said:28.xx percent bhai option de dete toh jaldi ho jataand also someone pleasse tell mecos(180+theta) and also (270+theta) kya hota hai????
@gudda1122 said:28.xx percent bhai option de dete toh jaldi ho jataand also someone pleasse tell mecos(180+theta) and also (270+theta) kya hota hai????
cos in 3rd quad is -ve so cos(180 + #)= -cos #
n i n 4th +ve so cos(270+#) = cos#
@anurag1701 said: Q. A mixture contains 80% acid and rest water.Part of the mixture that should be removed and mixed with same amount of water to make the ratio of acid and water 4:3 is ??Answer wid xplanatn plzz
ram ban aise questions ko karne ka
assume value
here final ratio is 4:3 and earlier is 80% and 20%
assume values which is multiple of both 100 and 7=700
now water is 560 and 140 is acid
final ratio is 400 w and 300 A
just we need to remove 160L water...which will be 80% of something
which means we will remove 200L
and also add 200L
hence answer
@gudda1122 said:28.xx percent bhai option de dete toh jaldi ho jataand also someone pleasse tell mecos(180+theta) and also (270+theta) kya hota hai????
cos(180+theta) = - cos theta
cos (270+theta) = sin theta.
Just remember that anything done (90+theta) and (270+theta) will give you the complementary trignometric function but yeah, you have to see the sign by yourself there.
cos is positive in I and IV quadrant.
sin is positive in I and II quadrant.
^^It comes from the shape of sine and cos waves. :D
@Estallar12 said:cos(180+theta) = cos thetaAns, cos (270+theta) = - sin theta.Just remember that anything done (90+theta) will give you the complementary trignometric function but yeah, you have to see the sign by yourself there.cos is positive in I and III quadrant.sin is positive in I and II quadrant.^^It comes from the shape of sine and cos waves.
sirji coz is +ve in 4th n 1st quad!!
so cos(270+#) = cos # a i wrong ??
@hellodelhi said:bro solution please......how u solved????.....
answer sahi h kya???//
actually P/H will be sin30
it means he moves 1/2 the speed by which he climbs at perpendicular which is 2m/s
may be my logic can be flawed
@Brooklyn said: @Estallar12 : We both are partially right!!n u said "aapne"ur eldercheck dis out
I'm not elder Brother. :P
Yeah, I was sure about 90 and 270 changing cos to sin. But sign main thoda lotcha kar diya maine. Cosine wave ka time-period 180 degrees kar baitha :splat::splat:
@Estallar12 said:cos(180+theta) = - cos thetacos (270+theta) = sin theta.Just remember that anything done (90+theta) and (270+theta) will give you the complementary trignometric function but yeah, you have to see the sign by yourself there.cos is positive in I and IV quadrant.sin is positive in I and II quadrant.^^It comes from the shape of sine and cos waves.
sirji cos(270+#) = -sin # :)
acc to d link
@gudda1122 said:answer sahi h kya???//actually P/H will be sin30it means he moves 1/2 the speed by which he climbs at perpendicular which is 2m/smay be my logic can be flawed
sorry bro but answer nhi pta.....mere pass sirf paper hai(questions only)....
@pathakrahul said: a man borrowed 40000 at a interest of 8% si per yr.at the end of second year he paid back certain amount and at the end of fifth year he pad back rs 35960 and cleared the debt. what is the amount did he paid back after 2 year
nobody is giving proper ans to this qn...........plz explain if u arrived at conclusion
@pathakrahul said:nobody is giving proper ans to this qn...........plz explain if u arrived at conclusion
Is it 40000*1.16 - 1160*25 = 1160*15 = 17400. :O