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1. Identify the percent composition of sodium carbonate. 2. Determine the percent composition of calcium in calcium carbonate. Pls. help me... my prob is that there is something in the solution that bothers me.. pls.kindly show me how to do.. i'll thank u...

Rectangle A and B are similar. The ratio of rectangle B's width to rectangle A's width is 3:2. Rectangle A has a length of 24 inches and a width of 16 inches. What is the perimeter of rectangle B?

If C is inversely proportional to T, when C=1/6 and T=4/7, find C when T=10.

1. R varies jointly as S and t. If R=1/6,S=1/8 and T=3, find R when S=2 and T=11. formula: R=KST 2. U varies jointly as L and H and inversely a S. If U=1.8, L=6.4, H=1.5 and S=-7.2, find U when L=4.3, H=5.1 and S=-2.2. formula: U=KLH/S Please Help!!

A mathematics teacher bought a birthday cake for his son with the dedication Happy (2 raise to 5/2 .(the dot means times) 2 raise to 3/4 divided by 2 raise to 1/4) Birthday!!! How old is his son? kindly help me...

@Reiny Thank you for answering that question actually, I already got the correct answer but my mind is not sure about it so I tried to ask but too late i passed my homework without the correct answer..hehe .. I forgot my password.. ^_^ lalalaah thanks aga...

the formula is C= K/T 1/6=K/4/7 <-- I use Cross multiplication K=4/42 that's all.. I can't continue solving cuz my mind is mess... Please Help!! "_"

1) E=K/Z 6=K/4 k=24 2) P=K/Q 1/2=K/2/3 K=2/6 or K= 1/3

YES!! thanks to your help! @Steve ... My mistake.. I multiplied 6 and 7, the one I should multiply by 6 is 4 not 7.. gee, I always forget it.. Thank you again! :)