# Posts by sab

Total # Posts: 27

**computers**

What overriding philosophy of the Windows 8 operating system makes it unique compared to earlier Microsoft operating systems? A. It is a universal operating system for all types of devices. B. It can host both 32- and 64-bit applications. C. Up to 192 users can have a separate...

*March 5, 2014*

**Devry**

1. You are part of a team given the task of designing an application to determine a students letter grade for a short course. The application will process a quiz, a project, a midterm exam and a final exam to determine the total score. The result of dividing the total score by...

*March 1, 2013*

**maths-help please?**

what is the algebra to reveal xv=15.625? trying to get my head around this but it is not sinking in

*August 30, 2012*

**maths-help please?**

A cicular opaque disk, 25cm in diameter, is set up 30 cm from a circular source of light of diameter 40 cm. A screen is placed 30cm beyond the opaque disk. Describe, giving dimensions, the nature of the shadow on the screen.

*August 30, 2012*

**maths/physics**

Can someone please help me- don't know how to get started?

*August 30, 2012*

**maths/physics**

Please I need some help with this question A cicular opaque disk, 25cm in diameter, is set up 30 cm from a circular source of light of diameter 40 cm. A screen is placed 30cm beyond the opaque disk. Describe, giving dimensions, the nature of the shadow on the screen.

*August 30, 2012*

**algebra**

thanks, wasn't sure whether i could simplify that last line or not

*August 28, 2012*

**algebra**

Can someone please check my answer? Rearrange (cp-yd)/(pd)=p+y to make d the subject OK, I did cp-yd=pd(p+y) cp=pd(p+y)+yd cp=p^d+pdy+yd factoring out the d cp=d(p^2+py+y) cp/(p^2+py+y)=d

*August 28, 2012*

**algebra**

all been clarified, thanks

*August 28, 2012*

**algebra**

Rearrange (r+s)/8s=(r-s)/8n to make r the subject. OK, I have started by rearranging the formula: 8n(r+s)=8s(r-s) 8nr+8ns=8sr-8s^2 What do I do next?

*August 28, 2012*

**algebra**

great, that makes sense, thanks

*August 28, 2012*

**algebra**

just realised, should the second line be 8nr+8NS?, not 8rs?.........

*August 28, 2012*

**algebra**

just realised, should the second line be 8nr+8NS?, not 8rs?

*August 28, 2012*

**algebra**

thank you!

*August 28, 2012*

**algebra**

Rearrange r+s/8s=r-s/8n to make r the subject. OK, I have started by rearranging the formula: 8n(r+s)=8s(r-s) What do I do next?

*August 28, 2012*

**maths/physics**

Need help..... A circular opaque disk, 25 cm in diameter, is set up 30 cm from a circular source of light of diameter 40 cm. A screen is placed 30 cm beyond the opaque disk. Describe, giving dimensions, the nature of the shadow on the screen

*August 28, 2012*

**geometry**

the measure of an angle of a parallelogram is 12 degrees less than 3 times the measure of an adjacent angle. explain how to find the measures of all the interior angles of the parallelogram.

*March 7, 2011*

**physics**

it was C thanks Shakina

*March 4, 2011*

**chemistry**

Suppose you wanted to produce an aqueous solution of = 8.65 by dissolving the following salt KNO2. At what molarity would you use?

*March 28, 2010*

**chemistry**

What is the of an aqueous solution that is 0.128 M NH4Cl ?

*March 28, 2010*

**Penn Foster Writing Assignment Writing Skills**

I NEED HELLPP

*March 24, 2010*

**chemistry**

Determine the molarity of in an aqueous solution at equilibrium with air at normal atmospheric pressure. The volume percent of in air is 20.65 Under an pressure of 1.00 , 28.31 of dissolves in 1.00 at 25.

*February 21, 2010*

**chemistry**

Im still not sure what to do. If i convert the .0455 moles into grams and then use the density to find ml, how does that take into account my 1kg of water?

*February 20, 2010*

**chemistry**

How many milliliters of glycerol, d=1.26 g/ml, must be added per kilogram of water to produce a solution with 4.55 mol% C3H8O3 ?

*February 20, 2010*

**Chemistry-Science**

the 3rd part its sqrt(a^2+b^2+c^2)

*February 14, 2009*

**French**

Could you help me find the story of Dantés in english, or french. Thanks

*May 15, 2008*

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