Wednesday

October 26, 2016
Total # Posts: 231

**Algebra**

and if the problem had been: 21a-3 ------ 7a-6 then it would be: 3a-1 ----- a-2

*May 19, 2008*

**physics**

An ideal gas at 18.5°C and a pressure of 1.54 105 Pa occupies a volume of 2.10 m3. (a) How many moles of gas are present? moles (b) If the volume is raised to 5.30 m3 and the temperature raised to 31.0°C, what will be the pressure of the gas? Pa

*April 26, 2008*

**physics**

A mass of 135 g of an element is known to contain 30.1 1023 atoms. What is the element? hydrogen oxyden aluminum carbon Is it aluminum?

*April 26, 2008*

**SCIENCE**

PISTILS AND STAMENS REACH MATURITY AT DIFFERENT TIMES, WHY WOULD THIS BE AN ADVANTAGE TO THE PLANT?

*April 1, 2008*

**us history**

when fdr served 4 terms, which president's record did he break?

*February 28, 2008*

**Math**

4x + 10 -3x =2-3

*February 26, 2008*

**Chemistry**

The solubility of CaCO3 at 25 degrees celsius is 6.90*10-5M. The reaction is CaCO3(s)-->Ca 2+(aq) + CO3 2-(aq) <-- a. Calculate the concentration of Ca +2 and CO3 -2 at equilibrium. b. Calculate the equilibrium constant for the dissolution reaction. (also known as the ...

*February 13, 2008*

**college math**

how to do set notation, for example

*January 28, 2008*

**social studies**

How did Alexander the Great unite Persian and greek cultures and why?

*December 5, 2007*

**statistics**

oops

*October 25, 2007*

**statistics**

Given the ensuing well drilling data, answer the following. [Reference: #4.78, page 172] • .30 (30%) probability of a productive well absent test information • Pre-drilling ballistics test ‘s affirmative result correctly predicts a productive well .70 of the ...

*October 25, 2007*

**statistics**

Given a distribution with mean X and standard deviation S, answer the following. 4.1 Determine the mean and standard deviation if constant K is added to each observation 4.2 Determine the mean and standard deviation if constant K is multiplied by each observation 4.3 Assuming ...

*October 25, 2007*

**statistics**

oops, thank you drwls

*October 25, 2007*

**statistics**

Given the ensuing well drilling data, answer the following. • .30 (30%) probability of a productive well absent test information • Pre-drilling ballistics test ‘s affirmative result correctly predicts a productive well .70 of the time • Pre-drilling ...

*October 25, 2007*

**statistics**

Compute the expected return if two mega lottery tickets are sold for $6, if the winning ticket is drawn from five (5) million tickets sold, and if the winner receives $10 million.

*October 25, 2007*

**statistics**

3. Prove (not show) that following two methods, long and short respectively, to compute the population variance yield the same result. ? (x i - ?) 2 / n, where i = 1, n ? (x i 2 - (? x i) 2) / n, where i = 1, n

*October 25, 2007*

**algebra**

a times a number - 5 = b so, add 5 to both sides ax-5 = b +5 +5 so now you have ax = b+5 divide both by x and you get a so ... a=(b+5)/x

*October 16, 2007*

**algebra**

if you add 2t + 1 =3 so 3-1=2 so 2 times what equals 2. not -1 because that would equal negative 2. its 1 because 2 times 1 is 2 plus 1 is three.

*October 16, 2007*

**math**

how would i multiply 365/365 x 364/365 x 363/365...all the way to 326/365 using excel or the ti-83 calculator without having to input all those numbers. please help. thanks.

*October 16, 2007*

**Statistics**

A manufacturer makes two models of an item: model I, which accounts for 80% of unit sales, and model II, which accounts for 20% of unit sales. Because of defects, the manufacturer has to replace (or exchange) 10% of its model I and 18% of its model II. If a model is selected ...

*October 4, 2007*

**math**

How many hours of jogging at 5 1/2 mi/h would be needed for a 200-lb person to lose 5 pounds? (Assume calorie consumption is just enough to maintain weight, with no activity)

*April 1, 2007*

**human biology**

if a cell lacks ATP, which of the following processes would cease to operate immediately? diffusion Na+/K= pump facilitated diffusion osmosis or passive transport http://www.brookscole.com/chemistry_d/templates/student_resources/shared_resources/animations/ion_pump/ionpump....

*March 18, 2007*

**human biology**

if a cell lacks ATP, which of the following processes would cease to operate immediately? diffusion Na+/K= pump facilitated diffusion osmosis or passive transport

*March 18, 2007*

**human biology**

which of these characterisitics apply to exocytosis? requirese energy, requires, carrier proteins, requires channel proteins and/or requires vesicles. Thanks. Since this is not my area of expertise, I searched Google under the key words "exocytosis" to get these ...

*March 18, 2007*

**human biology**

I hope someone can help me answer this queestion: which of the following does NOT involve the sharing of electrons? H20, HCl, NaCl, H2 or C6, H12, O6 and why? The last three compounds you listed do not exist. Among the others, NaCl does not share electrons; the Cl completely ...

*March 18, 2007*

**human biology**

does DNA serve as a template for just DNA or mRNA as well? Go here: http://www.stanford.edu/group/hopes/treatmts/pbuildup/h2.html and scroll down to: How can RNAi be used to treat HD?

*March 15, 2007*

**math ( subtracting fractions)**

12 1/4- 4 1/8 When you add or subtract fractions, you have to have the same denominator. In this problem you have to change 1/4 to 2/8. Then subtract the fraction and then subtract the whole number. Please post your answer and we'll be glad to check it.

*January 31, 2007*

**Survey for history..**

fyi it is hieroglyphs and not hieroglyphics.

*November 2, 2006*

**Survey for history..**

thankz 4 the help. i can't find where the bookof the dead/ hieroglyphics fits. there is only one spot for 13 letters.

*November 2, 2006*

**GOVERNMENT**

Obviously the government feels that a mere citizen do have the ability to vote for a president.

*October 22, 2006*

**PE Basketball**

what is the range of fitness required for effective performance in a game of basketball?

*October 18, 2006*