Monday

July 28, 2014

July 28, 2014

Total # Posts: 4

**math**

A 15 m ladder leans against a wall,its bottom is 9m from the wall. How much would the lower end have to be pulled away from the wall so that the top of the ladder would slide down the same amount?

**algebra**

Annual profit in thousands of dollars is given by the function p(x)=-, 1x^2 + 50x - 300, where x is the number of items sold, x is greater or equal to 0. Describe the meaning of the number 300 in the formula, in terms of its meaning in relation to the profit.

**Chem**

You made up a saturated solution of calcium sulfate (CaSO4). The temp is 25 degrees Celsius. You then add 5.00*10^-3 of sodium sulfate (NaSO4). What are the concentrations of calcium and sulfate after equilibrium is reached? The pKs of CaSO4 is 4.58. I know the Ks of CaSO4 to ...

**chemistry**

the pKs is correct. If you 10 to the negative power of pKs you get the Ks. I'm having a problem witht this problem as well. Any help? And yes, you add 5*10^-3 of Na2SO4.

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