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Rank: User Joined: 8/6/2010 Posts: 594
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Instead of tribal politicals and enuendos, I chose maths.
6 X 5 - 10 + 66 =
I said that is impossible. Can someone help me on this one or my son will have it rough on the backside tomorrow.
I agreed 221 is the answer but no one has given me a tick on 1003? Njung'e, do you know mathematics? 
"One man gives freely, yet gains even more; another withholds unduly, but comes to poverty. A generous man will prosper; he who refreshes others will himself be refreshed." Rev Canon Karanja.
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Rank: Elder Joined: 2/7/2007 Posts: 11,935 Location: Nairobi
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Insurgent wrote:Instead of tribal politicals and enuendos, I chose maths.
6 X 5 - 10 + 66 =
I said that is impossible. Can someone help me on this one or my son will have it rough on the backside tomorrow.
I agreed 221 is the answer but no one has given me a tick on 1003? Njung'e, do you know mathematics?
Yep....Terrific in thermo-dynamics  .Sasa hiyo ya kuuza mayai kwa soko is a waste of time.I want something that can make me chew my hat or remove the house paint with my nails  Nothing great was ever achieved without enthusiasm.
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Rank: User Joined: 1/24/2012 Posts: 1,675 Location: In Da Hood
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Insurgent wrote:Instead of tribal politicals and enuendos, I chose maths.
6 X 5 - 10 + 66 =
I said that is impossible. Can someone help me on this one or my son will have it rough on the backside tomorrow.
I agreed 221 is the answer but no one has given me a tick on 1003? Njung'e, do you know mathematics?
Wooooi ! . better ask a deaf person that question !
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Rank: Elder Joined: 12/9/2009 Posts: 1,493 Location: Nairobi
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Find the probabilities for each, using the standard normal distribution.
i). Pr(z < 1.42)
ii). Pr(z > −1.39)
iii). Pr(−2.46 < z < 1.74)
Seems people want to do maths today,haya there you go Kenya ni yetu sisi sote
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Rank: Elder Joined: 11/26/2008 Posts: 2,097
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Proof that
SEND + MORE = MONEY "Never regret, if its good, its wonderful. If its bad, its experience."
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Rank: Elder Joined: 8/11/2010 Posts: 1,588
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dossy7 wrote:Find the probabilities for each, using the standard normal distribution.
i). Pr(z < 1.42)
ii). Pr(z > −1.39)
iii). Pr(−2.46 < z < 1.74)
Seems people want to do maths today,haya there you go
Dang!
Insurgent, quickly change the thread to read 'arithmetic corner'.
Balaa like this one huwes mek.
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Rank: Elder Joined: 6/2/2011 Posts: 4,824 Location: -1.2107, 36.8831
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A slab 175mm thick, d=145mm, is constructed with grade 30 concrete and is reinforced with 12mm bars at 150mm centers one-way and 10mm bars at 200mm centers in the other direction. Determine the maximum load that can be carried on an area 300x400mm without exceeding the ultimate shear stress. Take fy to be 460n/mm2. Receive with simplicity everything that happens to you.” ― Rashi
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Rank: Veteran Joined: 1/25/2012 Posts: 1,624 Location: Langley
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Wait for one on Permutation. Na mtafute scientific calculator in advance If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them.
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Rank: Veteran Joined: 1/25/2012 Posts: 1,624 Location: Langley
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dunkang wrote:A slab 175mm thick, d=145mm, is constructed with grade 30 concrete and is reinforced with 12mm bars at 150mm centers one-way and 10mm bars at 200mm centers in the other direction. Determine the maximum load that can be carried on an area 300x400mm without exceeding the ultimate shear stress. Take fy to be 460n/mm2.
Take fy to be 460n/mm2.[/quote] fy ndio nini?
If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them.
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Rank: Elder Joined: 6/2/2011 Posts: 4,824 Location: -1.2107, 36.8831
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Mastermind wrote:dunkang wrote:A slab 175mm thick, d=145mm, is constructed with grade 30 concrete and is reinforced with 12mm bars at 150mm centers one-way and 10mm bars at 200mm centers in the other direction. Determine the maximum load that can be carried on an area 300x400mm without exceeding the ultimate shear stress. Take fy to be 460n/mm2.
Take fy to be 460n/mm2. fy ndio nini?
[/quote]
fy is the yield strength of the reinforcing bars. That of concerete is abbreviated as fcu.
HINT:
Maximum load = Vc x punching shear perimeter x d
and vc is 0.62n/mm2, so ignore fy and fcu since i have calculated it for you! (Just FYI, Vc is the shear force due to ultimate loads)! Receive with simplicity everything that happens to you.” ― Rashi
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