Friday

October 9, 2015
Total # Posts: 421

**math**

php. 30000.00 just multiply the numbers.
*October 8, 2015*

**engineering**

any help is greatly appreciated. I am so hopeless now. Water tower problem. The pressure in each house is 250 kPa and the average pressure drop is 50kPa. What should the height of the water tower? Height of the water level in the tower. What is the diameter of the water tower?
*September 28, 2015*

**chemistry/engineering**

Wet sugar, containing one-fifth water by mass is conveyed through an evaporator in which 85.0% of the entering water is vaporized. Taking a Basis of 100 kg of feed to the evaporator A barrel of oil contains about 6 million Btu and about 1000 Btu is needed to evaporate one lbm ...
*September 22, 2015*

**Geometry**

I still don't get the answer steve? I calculated, but nothing close.
*September 15, 2015*

**Geometry**

A circle has a center at (8,2). The point is (3,7) is on the circle. What is the area of the circle to the nearest tenth of a square unit? A. 22.2 B. 44.4 C. 157.1 D. 314.2 (I've been stuck on this question for a while) thanks!!
*September 15, 2015*

**geometry**

The endpoints of the diameter of a circle are at (1,2) and (7,-6). What is the circumference of the circle, to the nearest tenth of a unit.
*September 15, 2015*

**geometry**

how?
*September 15, 2015*

**geometry**

So what would I do after that?
*September 15, 2015*

**geometry**

What is the perimeter of rectangle WXYZ, with vertices W(-3,7), X(-5,4), Y(1,0), and Z(3,3) to the nearest unit.
*September 15, 2015*

**geometry**

idk
*September 14, 2015*

**geometry**

Jenny is building a rectangular garden around a tree in her yard. The southwest corner of the garden will be 2 feet south and 3 feet west of the tree. The northeast corner of the garden will be 1 foot north and 4 feet east of the tree. If jenny paves a path around the garden ...
*September 14, 2015*

**math**

Julia spent 1/3 of her money. Then she lost 1/2 of the rest. She now has $10 left. How much did she get for her birthday?
*September 2, 2015*

**Finite Math**

Can someone please help me. I am not sure to work the following matrices. If A^4 = -3 4 -4 5 and A^5= 4 -5 5 -6 What is A? Can you show me how you got this? Thank you so much ;)
*July 21, 2015*

**ECO 372**

Aggregate demand management policies are designed most directly to?
*July 7, 2015*

**Finite Math**

Thanks Steve!! You're a life saver ;) Katy
*June 17, 2015*

**Finite Math**

Can someone help me out with this! Thank you in advance :) Frank’s Fruit Stand sells fresh fruit as well as fruit dipped in chocolate and covered with chopped almonds. Each dipped banana requires 6 grams of chocolate and 3 grams of almonds to coat. It takes 6 grams of ...
*June 17, 2015*

**BUS 599**

According to double-entry accounting, which of the following is a correct statement regarding transactions?
*May 23, 2015*

**analytical chemistry**

DrBob222, it is me again. Continue the question 5mL of a solution A (unknown concentration) was transferred into sic 25mL volumetric flask. The following volumes of a standard solution of A with with a concentration 75ppm were added to the flask: 0mL, 0.5mL, 1mL, 1.5mL, 2mL, ...
*May 10, 2015*

**Analytical Chemistry**

DrBob222, thank you for your answer Thanks to your suggestion, my final answer is 7.48447 ppm (unknown concentration) However, I am just wondering why Prof. gave the graph of excitation spectrum of A. One reason I can think of is that I use the highest intensity which is 100 ...
*May 8, 2015*

**Analytical Chemistry**

Thank you so much DrBob222. I see what I did wrong. Yes you are right. These number 19.979, 29.986 is intensity from fluorescence (emission) spectra data. The intensity of standard 1 is not 0. It is 9.990. So after correction, the equation I got is y= 6.6656x + 9.9777 and R^2 ...
*May 8, 2015*

**Analytical Chemistry**

5mL of a solution A (unknown concentration) was transferred into sic 25mL volumetric flask. The following volumes of a standard solution of A with with a concentration 75ppm were added to the flask: 0mL, 0.5mL, 1mL, 1.5mL, 2mL, and 2.5L. The excitation spectrum and and ...
*May 8, 2015*

**chemistry**

Thank you to your suggestion, I have found that path length is 9.7574 mm. But do you know how to write correctly significant number and its uncertainty
*May 8, 2015*

**analytical chemistry**

Thank you DrBob222. Can you explain further what you mean by saying "Plotting with data not posted"? I think when I can find the intensity of the unknown, I can plug it in the equation. But my problem is that I dont know how to do?
*May 8, 2015*

**analytical chemistry**

There is a b) question that I am stuck too. If a synchronous experiment is to be performed what would be the offset that you would use
*May 8, 2015*

**analytical chemistry**

Any help is greatly appreciated 5mL of a solution A (unknown concentration) was transferred into sic 25mL volumetric flask. The following volumes of a standard solution of A with with a concentration 75ppm were added to the flask: 0mL, 0.5mL, 1mL, 1.5mL, 2mL, and 2.5L. The ...
*May 8, 2015*

**analytical chemistry**

Consider a general reaction where a ligand L and a metal ion Mn+ form a complex with m number of ligands (L) coordinated to each metal ions. Assume the metal is colorless. The ligand and metal solutions were mixed at molar fractions (and same total molar concentration). The ...
*April 25, 2015*

**Science**

Yeah I really don't understand should I pick c or d??
*April 19, 2015*

**Science**

Which of the following statements is true? A. There is more water on Earth now than there was millions of years ago. B. There is less water on Earth now than there was millions of years ago. C. There is no way to tell how much water was on Earth millions of years ago. D. There...
*April 19, 2015*

**science**

A protostar has a high enough___to become a star. A. volume B. mass C. temperature D. brightness Is the answer B? Thanks in advance
*April 9, 2015*

**Civics**

will MsSue just give answer ? cool
*April 4, 2015*

**math**

1 and 1/5?
*April 4, 2015*

**essay**

thx
*April 4, 2015*

**essay**

today
*April 4, 2015*

**essay**

Sorry, should have looked at rules and proofread. I didn't know that was like a rule :0
*April 4, 2015*

**essay**

I need to come up with an outline for a essay on the differences between the North usa and South? Any ideas? Thanx if u can help
*April 4, 2015*

**Math Help**

Hi! I need help with this question. Thanks! Directions: To solve these problems, you need to find the inverses of these 2x2 matrices. a.) D= [-3 -6 6 12] b.) C= [2 1 7 3]
*March 30, 2015*

**Math**

440
*March 29, 2015*

**Math**

4410+40=4450
*March 29, 2015*

**Math**

Answer 4410
*March 29, 2015*

**Math**

4000(1+0.05)^2
*March 29, 2015*

**Math**

Am suppose to find the compound interest if so could give me the formula
*March 29, 2015*

**Math**

Cary puts $400 he earned from mowing lawns in the bank for two years at an interest rate of 5%. What would be the total amount of money that he would have in the bank be at the end of two years. I=prt I=400(0.05)(2) I=40
*March 29, 2015*

**Math**

Find the amount of interest Nina's saving account will earn after 3 years if her initial deposit was $900 with an 8% simple interest rate. I=prt I=900(0.08)(3) I=216
*March 29, 2015*

**Math**

Answer 200
*March 29, 2015*

**Math**

I=5000 P=50 R=? T= 6 Answer... About 16 or 17%
*March 29, 2015*

**Math**

Dr. Morton puts $5000 in the bank and left it there for 6 months. What simple interest rate she needs to have in order to have made $50 at then end of 6 months?
*March 29, 2015*

**Math**

Thank you
*March 29, 2015*

**Math**

Monica had a saving a account which paid her an interest rate of 4%. After she had this account for 12 years, she had received $192 in interest. How much money had she put into the account at the beginning of the 12 years? Please help me answer this question step by step
*March 29, 2015*

**Math**

Is there any key words that I should remember for each of them
*March 29, 2015*

**Math**

How do you know if a word problem question is asking for simple interest or compound interest? P.s. I already know the formula and what both of them mean
*March 29, 2015*

**chemistry**

How would you make 1L of a buffer of pH=11 starting with 15g of base, C5H11N:. At you disposal are 1M HCl and 1M NaOH, pH meter, balance, distilled water and glassware. Try to be quantitative in expressing amounts of material that you will use. Given for C5H11NH+ pKa=11.25. ...
*March 24, 2015*

**Social studies**

Never mind I got the second question thanks for helping
*March 23, 2015*

**Social studies**

How was 13,14,15 amendments before and how is 13,14,14 amendments now like
*March 23, 2015*

**Social studies**

I still don't get number 1
*March 23, 2015*

**Social studies**

How was 13,14,15 amendments before and how is 13,14,14 amendments after
*March 23, 2015*

**Social studies**

My guess on my first question was that if in early years adult citizen has not pay there taxes they are not allow to vote then. My second is basically how was civil war amendment like before and how is it like now
*March 23, 2015*

**Social studies**

My first question is "how could a poll tax or a literacy test have been usd to prevent someone from voting? My second question is how was civil war amendments before and after
*March 23, 2015*

**Social studies **

How could a poll tax or a literacy test has been used to prevent someone from voting? The Civil war Amendments Before. After
*March 23, 2015*

**Social studies**

They needed land
*March 18, 2015*

**Social studies**

removal of the Indians beyond the white settlements is approaching to a happy consummation
*March 18, 2015*

**Social studies**

Maybe for peace
*March 18, 2015*

**Social studies**

president to negotiate with Indian tribes in the Southern United States for their removal to federal territory west of the Mississippi River in exchange for their ancestral homelands. Is this the answer of number 1
*March 18, 2015*

**Social studies**

I need some websites that could help me find the answer of all three of them cause I'm a bit of confused
*March 18, 2015*

**Social studies **

1.why were American Indians asked to moved? 2. Did the u.s government have the right to ask American Indians to move? 3.what were the benefits of accepting gifts and moving to indian territory.?
*March 18, 2015*

**chemistry**

Put the following compounds in order of INCREASING oxidation number of N: N2H4, NO3-1, N2, NH3 ?
*February 21, 2015*

**Physics **

A car traveling 85km/h slows down at a constant 0.52m/s2 just by "letting up on the gas." Calculate the distance the car coasts before it stops.
*February 8, 2015*

**Math**

The speed of sound in air at sea level at 32 degrees Fahrenheit is 1088 ft/s. If that represents only 22.04% of the speed of sound in ice-cold water, what is the speed of sound in ice-cold water, to the nearest whole number? what i did: 22.04/100 = 32/x i set up this ...
*January 16, 2015*

**Math**

Estimate 12 1/2% of 57
*January 16, 2015*

**MATH**

ARE THE FOLLOWING EQUATIONS INVERSES? y=x^4-7 and y=∜ x+7
*November 19, 2014*

**World History**

The Mongols have a terrible reputation in history as pillagers who destroyed all that met their path. How does this depiction of the Mongols compare with the same people who brought the Pax Mongolia? help please, I don't get it. I have to do this for History, But I don'...
*November 9, 2014*

**prod and oper management**

Hahn Manufacturing purchases a key component of one of its products from a local supplier. The current purchase price is $1,500 per unit. Efforts to standardize parts succeeded to the point that this same component can now be used in five different products. Annual com- ponent...
*September 6, 2014*

**chemistry **

Flask A contains 100 milliliters of a solution with a pH of 5. After you add 100 milliliters of a solution from Flask B, the pH rises to 7. What was the pH of the solution in Flask B?
*September 5, 2014*

**math**

Simplify the numerical expression below 25-4×5
*September 3, 2014*

**Basic Physics**

I don't understand how to work this problem out: Find x-component of vector a ⃗ = (7.0m/s 2 , - y-direction) Please help
*July 9, 2014*

**social studies**

so i have to do a poster on the human characteristics of south america and one of the catagories is goverment systems
*May 1, 2014*

**math**

The length of a rectangle is 3b + 2 and the width is 9b + 6. What is the ratio of its length to its width?
*April 28, 2014*

**Algebra 1**

Why does your body go into shock when you jump in cold water
*March 11, 2014*

**LA check answers?**

D B B B C C A
*March 6, 2014*

**Algebra Readiness**

Sally bakes two cakes, a square and a circle. The length of the side of the square cake is 8 inches. Find the area and the perimeter of the cake heart.
*February 16, 2014*

**Math**

3/4
*February 5, 2014*

**science **

hi I wanna know the safety precautions of using of lead
*January 25, 2014*

**goverment**

“The President of the United States would be liable to be impeached, tried, and, upon conviction of treason, bribery, or other high crimes or misdemeanors, removed from office . . . The person of the king of Great Britain is sacred and inviolable; there is no ...
*January 20, 2014*

**reading**

the past three days have been quiet and enjoyable. What is the subject?
*January 8, 2014*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 30, 2013*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 30, 2013*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 29, 2013*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 28, 2013*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 27, 2013*

**Social Studies**

yes I understand her interpretation and I apologize for the inconvenience. I have figured it out now! Thank you so much Ms. Sue! I really appreciate your help! :)
*November 22, 2013*

**Social Studies**

I am so sorry about posting again but I still don't understand the social impact the airplane made at the time when it was invented...
*November 22, 2013*

**Social studies**

Please help quick!
*November 19, 2013*

**Social studies**

Ok Ms. Sue but could you also tell me what the impact was at the time?
*November 19, 2013*

**Social studies**

(respost) I chose the Airplane and I know that it was invented by the Wright brothers etc. But what I don't know what to write a paragraph on is "Describe the social impact the invention had on society". Please help! I really stuck here :? yes, thank you so much ...
*November 19, 2013*

**Socials**

yes, thank you so much Ms. Sue. But the question is stated in past tense which I assume means what the impact was on society at the time, that's what I don't get. Yes, they invented the plane and the ability for mankind to fly but I don't know the impact or even ...
*November 18, 2013*

**Socials**

For socials, we have to do a project on an invention during the industrial revolution time period. I chose the Airplane and I know that it was invented by the Wright brothers etc. But what I don't know what to write a paragraph on is "Describe the social impact the ...
*November 18, 2013*

**Probability and Satistics**

Random Variables X and Y follow a joint distribution: f(x,y)=(6-x-y)/8 if 0<x<2, 2<y<4 and 0, else Find P(1<Y<3|X=1) I first got the marginal distribution for x and got (3-x)/4 (Integrated from 2 to 4)and then got the conditional dist and got (5-y)/4 and then...
*November 2, 2013*

**Probability and Statistics**

Random Variables X and Y follow a joint distribution: f(x,y)=(6-x-y)/8 if 0<x<2, 2<y<4 and 0, else Find P(1<Y<3|X=1) I first got the marginal distribution for x and got (3-x)/4 (Integrated from 2 to 4)and then got the conditional dist and got (5-y)/4 and then...
*November 2, 2013*

**Probability and Statistics**

Random Variables X and Y follow a joint distribution: f(x,y)=(6-x-y)/8 if 0<x<2, 2<y<4 and 0, else Find P(1<Y<3|X=1) I first got the marginal distribution for x and got (3-x)/4 (Integrated from 2 to 4)and then got the conditional dist and got (5-y)/4 and then...
*November 1, 2013*

**Chemistry**

A sample of bromine containing isotopes bromine-79 and bromine-81 was analyses in a mass spectrometer. How many peaks corresponding to Br^+ were recorded? A)1 B)2 C)3 D)4 How many peaks corresponding to Br2^+ Were recorded? A)1. B)2. C)3. D)4
*October 18, 2013*