# Posts by Roseanne

Total # Posts: 10

**geometry**

given the points A (-4 ,3) B (12 ,11) and C (4,7) .point c divides AB into what ratio?

*April 3, 2016*

**math**

Two fraternities, Sig Ep and Ep Sig, plan to raise money jointly to benefit homeless people on Long Island. They will sell Yoda vs. Alien T-shirts in the student center, but are not sure how much to charge. Sig Ep treasurer Augustus recalls that they once sold 70 shirts in a ...

*October 23, 2012*

**math**

You have just isolated a new radioactive element. If you can determine its half-life, you will win the Nobel Prize in physics. You purify a sample of 2 grams. One of your colleagues steals half of it, and eight days later you find that 0.1 gram of the radioactive material is ...

*October 21, 2012*

**Business math**

Meg's pension plan is an annuity with a guaranteed return of 3% per year (compounded quarterly). She would like to retire with a pension of $50,000 per quarter for 10 years. If she works 22 years before retiring, how much money must she and her employer deposit each ...

*October 21, 2012*

**chemistry**

thanks! it looks like i was calculating the cube and not the cube root!

*November 27, 2010*

**chemistry**

i tried solving it on my own but im confused by the steps and when i calculate i don't end up with 0.00202. please help!

*November 27, 2010*

**chemistry**

Calculate the molar solubility of MX2, if the Ksp=3.3x10^-8 i already asked this but im confused about one of the steps. Ksp = (x)(2x)^2 = 4x^3 = 3.3X10^-8 x = solubility = 0.00202M. but i don't understand do i substitute the x in 4x^3 3.3X10^-8 and then divide by 3.3X10^-...

*November 27, 2010*

**chemistry**

that helped a lot, thanks!

*November 24, 2010*

**chemistry**

Calculate the molar solubility of MX2, if the Ksp=3.3x10^-8 how can i solve this problem?

*November 24, 2010*

**chemistry**

Calculate the molar solubility of MX2, if the Ksp=3.3x10^-8 how can i solve this problem?

*November 23, 2010*

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