Tuesday

January 17, 2017
Total # Posts: 9

**Math**

Mary=1/3*(x-8),Erin=(x-8),John=x 1/3*(x-8)+(x-8)+x=267 take the L.C.M=3 (x-8)+3(x-8)+3x=267*3 Remove brackets x-8+3x-24+3x=801 Collect like term x+3x+3x-8-24=801 7x-32=801 7x=801+32=833 X=833/7=119 Mary=1/3 (119-8)=37 Erin=119-8=111 John=119 Check:37+111+119=267

*January 10, 2017*

**Math**

If €8200 is divided among A,B and B so that A's share is 2/5 of B's and B's is 3/4 of C's share, how much does C's get?

*January 10, 2017*

**Physics **

An electric heater raises the temperature of 120g of water in a thin light vessel through 10K in 2mins, when placed in 70g of water contained in a metal vessel of mass 0.55kg the temperature rises through 9K in the same time. Calculate from the above: a)the heat supplied in ...

*January 10, 2017*

**Physics **

what mass of ice at -14'c will be needed to cool 200cm3 of an orange drink (essentially water) from 25'c to 10'c! (specific latent heat of fusion of ice =336000) (specific heat capacity of ice = 2100) (specific heat capacity of water = 4200)

*January 10, 2017*

**Physics **

calculate the specific heat capacity of the materials for which the heat supply, mass, and temperature rises are given below: i)25200J, 0.3Kg,20K ii)8000J, 500g, from 20'C to 60'C iii)9450J, 150g, from 15'C to 45'C

*January 10, 2017*

**English Essay writing **

Please help prepare a standard write up. We would like to know more about you and the context in which you have grown up, developed your goals, and earned your academic achievements. Please describe the factors that have most influenced you and your hopes and dreams. How have ...

*January 10, 2017*

**Math**

An equilatetal triangle with the lengths of its sides given in term of a and b. If the lengths are 4acm,3bcm and (a+b+c)cm. Find a and b and hence find the length of sides of the triangle.

*January 9, 2017*

**Chemistry **

CuCO3=CuO +CO2. Find the mass of 1mole of each substance taking part in the reaction. (Ar:Cu=64,C=12,O=16). When 31g of CuCO3 is used; 1)how many grams of CO2 is formed. 2) what mass of solid remains after heating.

*January 8, 2017*

**Physics**

a bullet fired at a wooden block of thickness 0.15m manages to penetrate the block. if the mass of the bullet is 0.025kg and average resisting force of the wood is 7x 10^3 N , Calculate the sppeed of the bullet just before it hits the wood block

*October 30, 2016*

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