Questions Asked on
July 30, 2011

Math
A man and his wife share a sum of money in the ratio 3:2. If the sum of money is doubled, then in what ratio should they divide it so that the man still receives the same amount?
asked by Amir 
calculus
7. A cardboard box manufacturer wishes to make open boxes from rectangular pieces of cardboard with dimensions 40 cm by 60 cm by cutting equal squares from the four corners and turning up the sides. Find the length of the side of the cutout square so that
asked by Jeff 
physics
A block of metal which weighs 60 newtons in air and 40 newtons under water has a density, in kilograms per meter cubed, of:
asked by Steve 
Physics
In a binary star system, two stars orbit about their common center of mass, as shown in the figure . If r2 = 2r1, what is the ratio of the masses m2/m1 of the two stars?
asked by Real 
statistics
A random sample of 10 observations is selected from the first normal population and 8 from the second normal population. For the hypothesis, H0: ¦Ì1 ¡Ü ¦Ì2, (.01 significance level), what is (are) the critical value(s)? (Population standard
asked by Anonymous 
biology
what is the original color of Phenolphthalein solution? pink or colourless?
asked by Yuni 
british literature
in william blake's poem " the chimney sweeper," the metaphor"coffins of black represent (A) innocence (B)chimneya (C)daffodils (D)the tiger
asked by jessica tt 
chemistry
A 25.00 mL sample of 0.4 M dimethylamine (CH3)2NH is titrated with 0.150 M HCl. What is the pH at the halfequivalence point? Not sure what to do here exactly, I'm bad with the titration problems. I know there are normally a couple tables (finding the
asked by 1/2 equivalence point 
Physics
Halley comet which passes around the sun every 76 years has an elliptical orbit. when closest to the sun it is at a distance of 8.823 x 10^10 m and moves with a speed of 54.6 km/s. The greatest distance between hally's comet and the sun ( aphelion ) is
asked by Lonely 
Math
Your class decides to publish a calendar to raise money. The initial cost, regardless of the number of calendars printed, is $900. After the initial cost, each calendar costs $1.50 to produce. What is the minimum number of calendars your class must sell at
asked by Rochelle 
englis
In 3–5 sentences, write down what you told someone in that conversation. Once you write your sentences, go back and identify the sentence type of each one. They will be one of these three options: simple sentence, compound sentence, or complex sentence.
asked by nisreen 
acting?film
does anyone know a website that i can recover deleted photos for free when i download i see my pic go through then when i want my pictures to save them they say i have to pay does anyone know one that doesnt have to pay if i want to save them thanks
asked by james 
english
Please unscramble this word bssmyale it is related to at a dance
asked by desiree 
Finance
ColgatePalmolive Company has just paid an annual dividend of $0.85. Analysts are predicting a 10% per year growth rate in earnings over the next five years. After that, Colgate’s earnings are expected to grow at the current industry average of 4.7% per
asked by Debbie 
Chemistry
Classify each of the following solutions as acidic, basic, or neutral based on the pH value. (a) pH = 8.0 (b) pH = 7.0 (c) pH = 3.5 (d) pH = 6.1
asked by norma 
Science
Chlorine gas was bubbled through a warm concentrated solution of potassium hydroxide. write an equation of reaction that took place describe how pure crystals potassium chlorate (5) may be obtained from the reaction above
asked by Piom 
Science
* P is a a black powder, which, when fused with a mixture of potassium hydroxide and potassium nitrate and then treated with water yields a green solution. The green solution turn purple when acidified. identify P, the green solution and purple solution.
asked by Piom 
Maths
Prove that the identity element e of a group G is unique.
asked by Santosh 
Chemistry
A closed manometer is filled with an oil with density of 0.776 g/mL. What is the pressure in mmHg when the liquid column in the manometer stands at 85.7 mm? im not sure what mm is suppose to stand for here (probably meters but that doesnt fit into the
asked by Henry 
Calculus
Need help with this complex number equation. 83i/46i=
asked by Josh 
Chemistry
Suppose a fuelcell generator was used to produce electricity for a house. If each H2 molecule produces 2e, how many kilograms of hydrogen would be required to generate the electricity needed for a typical house? Assume the home uses about 850 kWh of
asked by norma 
Business Law
Fred Salem works as a sales rep for Pennrock Greeting Cards. He has a threeyear contract but quits after two years. As a result, Pennrock loses sales of $1000. May Pennrock recover this amount from Salem?
asked by Sarah 
chemistry
What is the percent ionization of 0.025 M chlorous acid, HClO2 solution? Ka HClO2 = 1.1*10^(2) Answer: 48% What I did: HClO2(aq) + H2O(l) >
asked by % ionization 
Algebra
The ratio of the lengths of two pieces of ribbon is 1:3. If 4 ft were cut from each piece, the sum of the new lengths would be 4 ft. How long would each piece be ?
asked by Gaby 
Physics
A compact car has a mass of 1400kg. Assume that the car has one spring on each wheel, that the springs are identical, and that the mass is equally distributed over the four springs. What is the spring constant of each spring if the empty car bounces up and
asked by falcon306 
physics
refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? a.)kinetic energy of the crate b.)potential energy of the crate c.)linear momentum of the
asked by Tarissa 
physics
refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? a.)kinetic energy of the crate b.)potential energy of the crate c.)linear momentum of the
asked by Tarissa 
physics
refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? a.)kinetic energy of the crate b.)potential energy of the crate c.)linear momentum of the
asked by Tarissa 
physics
refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? a.)kinetic energy of the crate b.)potential energy of the crate c.)linear momentum of the
asked by Tarissa 
chemistry
How would you make up 255 mL of 0.150 M HNO3 from nitric acid that is 68.0% HNO3? The density of 68.0% HNO3 is 1.41 g/mL.
asked by Henry 
Chemistry
A sample of 0.43 moles of a metal M reacts completely with excess chlorine to form 18.23 grams of MCl. How many moles of Cl are in the sample of MCl that forms?
asked by D 
Chemistry
If you have 1 sack of cotton (which is expected to float on water) and were asked to measure the volume, what will you do?
asked by Kian 
Media influences on American Culture
I just need to know how to start a final paper on a culturally influential,on television show, movie, song or website
asked by carrie 
chemistry
what happens to the yield of sulphur trioxide?if you increase the pressure
asked by Anonymous 
math
Translate to an equation p $25 potted plants and s $20 shrubs total $300,graph the equation and use the graph to determine three different combination of potted plants and shrubs that total $300?
asked by Diane 
history
What problems had to be overcome Africa's interior could be opened up to Westeren explorers? what helped to over come these problems?
asked by john 
English
1. Each of the boys has his own computer. 2. Each of the boy has his own computer. 3. Each of the boys has its own computer. 4. Each boy has his own computer. (Is #2 wrong? Are all of them except #2 correct and the same?)
asked by rfvv 
Math
Write the statement in symbols using the p and q given below. Then construct a truth table for the symbolic statement and select the best match. p = I eat too much q = I'll exercise. I'll exercise if I eat too much. Is it q>p?? I do not know how to do the
asked by Jen 
Math
The number of dry cleaning orders picked up at Sunny Fresh Dry Cleaners was sampled over 4 hour periods. Below is the sample: 61 58 67 52 25 64 38 49 51 61 58 61 27 61 58 34 Construct a stem and leaf plot of the data. I have no idea ??
asked by Jen 
physics
if the coefficient of kinetic friction between a 35kg crate and the floor is 0.30, what horizontal force is required to move the crate at a steady speed across the floor? what horizontal force is required uk is zero?
asked by mariz 
ALEGEBRA
A STORE SOLD 18 SWEATSHIRTS. WHITE ONES COST $9.95 AND YELLOW ONES COST $11.50. IF $202.35 WORTH OF SWEATSHIRTS WERE SOLD, HOW MANY OF EACH WERE SOLD?
asked by CURLEY 
MULTIPLICATION
HOW MANY MILLIMETERS ARE THERE IN 8 CM
asked by Anonymous 
math
what is 8+10+2/12+4/9 in lowest term if possible
asked by abby 
Chemistry
You are given 73 mL of CO2 at 0.69 atm. What volume (in mL) would the CO2 occupy at 0.67 atm if the temperature is maintained at a constant 25 °C.
asked by Kyle 
history
What is the basic message of the Quran and when was it compiled.
asked by Matt 
HISTORY
What are the main differences between the Shiites and the Sunnis?
asked by Carrie 
GRAMMAR
Dear MS. Writeacher  Thank You 1.(4). Since the previous scan, the patient has undergone surgery leaving a distorted and small right hemithorax. I put the comma here because you could start a new sentence with The Patient ..... 2.(5). The remainder of the
asked by LeslieTo:Writeacher 
math
John borowed 12,000 and agreed to repay the loan in six equal monthly payments plus interest of 1.5% per month on the unpaid balance. What is his total payment for the third month?
asked by Jules 
algebra
factor completely. Remember to look first for a common factor. if the polynomial is prime, state this. 4t^2+64
asked by sheba 
Physics
In the early morning hours of June 14, 2002, the Earth had a remarkably close encounter with an asteroid the size of a small city. The previously unknown asteroid, now designated 2002 MN, remained undetected until three days after it had passed the Earth.
asked by Geek 
algebra
I get it all done and it is wrong please help solve this thanks. Solve the compound inequality. 4x3/86
asked by tara lee 
Chemistry
A sample of 50.0mL of argon is collected at 60*C and 820 torr. What does the sample weigh?
asked by LaShun 
calculus
Find the indefinite integral of 1tanx/1+tanx Dont know how to really approach this question. Should i use identities, or is there a power series i can use?
asked by integral 
Math
The number of dry cleaning orders picked up at Sunny Fresh Dry Cleaners was sampled over 12 hour periods. Below is the sample: 142 171 125 91 140 125 97 125 162 142 125 117 89 125 140 128 From this data set, compute the sample mean, median, mode and
asked by Jen 
Mathprobability
If the odds of winning a raffle are 2:240, what is the probability of winning? I think it's 2/240??
asked by Jen 
Math
One thousand raffle tickets are sold for $1.00 each. One grand prize of $400 and two consolation prizes of $100 each will be awarded. Jeremy purchases one ticket. Find his expected value. ??
asked by Jen 
statistics
How large a sample should be surveyed to estimate the true proportion of college students who do laundry once a week within 3% with 95% confidence?
asked by Anonymous 
Math
A bag contains 7 lavender marbles, 11 turquoise marbles and 5 rainbow marbles. What is the chance of drawing a rainbow marble? If a rainbow marble is drawn then placed back into the bag, and a second marble is drawn, what is the probability of drawing a
asked by Jen 
adverbs and adjectives
check my paper for adverbs and adjectives?
asked by ashlet 
Math
I am supposed to find the pattern of a triangle of fractions, and find the next two rows. However, I can't seem to find the pattern. Could you please help me out? Row 1: 1 1 Row 2: 1 3/2 1 Row 3: 1 6/4 6/4 1 Row 4: 1 10/7 10/6 10/7 1 Row 5: 1 15/11 15/9
asked by Needshelp 
Reimbursement Methodologies
Who is responisable for adjusting the Medicare DRG list and reimbursement rates annually?
asked by Anonymous 
word problems
you are considering 2 jobs. one job pays $350 per week plus 2% commission on all sales. The second job pays $1200 per month and 2.5% commission on all sales. assuming sales of $1000,000 during the year, which job pays the best?
asked by Anonymous 
Basic Operations and Bussiness Basics
A store owner buys supplys from a vender for $8,450. The terms of sale are 2/10, n/30.What will be the net amount due if the owner pays the bill by the 10th day after he receives the supplies?
asked by Anonymous 
English
Charles "cut" the vegetables. Charles "chopped" the vegetables. Which sentence contains an active verb? How can you tell?
asked by Heather 
algebra
P is a point that is not on line m. How many lines can be drawn through P that form a 30 degree angle with line m?
asked by Anonymous 
Pronoun Pratice
I have written a paragraph about credit cards using at least five different pronouns. Could you please look over it and let me know if you see any errors, if my pronoun use is correct and if the sentences are complete. If you have any input about how a
asked by Star 
chemistry
What is the pH of an aqueous solution of 0.10 M NaHC(3)H(2)O(4)? Answer: 10.9 What I did: NaHC(3)H(2)O(4) + H(2)O>
asked by pH levels 
Math / Linear Equations
I was looking on a website that teaches linear algebra and it had this problem: 3x  15 _______ =0 2x + 1 And it says the answer is: x = 5 But I don't understand how to get that answer so I hope someone can give me step by step directions for it.
asked by Ashley 
PHYSICS HELP!
A compact car has a mass of 1400kg. Assume that the car has one spring on each wheel, that the springs are identical, and that the mass is equally distributed over the four springs. What is the spring constant of each spring if the empty car bounces up and
asked by CEO 
algebra
Suppose a sample of Cesium137 with initial mass of 200 grams decays to a mass of 160 grams voer the course of 10 years. Find the halflife of Cesium137 (Round to the nearest year) How much Cesium137 is left in the sample after 60 years? Round to the
asked by Melanie 
chemistry
What is the molar solubility of silver carbonate Ag2CO3 at 25 C if it is dissolved in a 0.15M solution of silver nitrate, AgNO3? Solubility constant: silver carbonate = 8.1 *10^(12) Answer: 3.6 *10^(10) So... not sure exactly what to do here. AgCO3 +
asked by molar solubility 
math
A family's plan to retire in 15 years and expect to need $500,000. Determine how much they must invest at 7.6% compounded annually to accomplish their goal.
asked by Anonymous 
Math
What are some examples of exponential function (Using the formula: Al = A0(1/2)^t/h ), trig functions that are used to find amplitude, period, max, min etc., and combinations of transformation at home or in life in general?
asked by Kate 
math
please help I have no ideal how to do this convert the numeral to a numeral in base 10 8B3C0 16
asked by Anonymous 
health
what is the legal status of the electronic signature in the EHR in TN
asked by Chandice 
Chemistry
When oxygen expands from the liquid to gaseous state how much more volume does it occupy?
asked by Janet 
algerbra
Find an equation of the line containing the given pair of points (1/6,1/3) and (5/6,3)
asked by Renee 
intermediate algebra
Write the substitution that could be used to make each equation quadratic in u. for w^1/33w^1/6+8=0,use w=
asked by sheba 
health
what are possible impact of not logging off or exit from the patient's record
asked by Jessica 
General Education Statistics  MAT112
There are many ways people can invest their money. In mutual funds, the investor buys shares in a fund that buys investment instruments for the investor, commonly stocks, bonds, or fixed instrument investments. Investment fund managers commonly advertise
asked by Tanya 
biology lab
rate of photosyhthesis in presence of light intensity & CO2. ~A : sodium bicarbonate in darkness pH b4 xperiment9 " @ 20 min 8 " 60 min 8 ~B: sodium bicarbonate in room light pH b4 xperiment9 " @ 20 min9 " 60 min8 ~C: sodium bicarbonate 20 cm from
asked by Yuni 
technology
how can you protect your own eletronic siginture?
asked by Timothy 
math
2445765
asked by ros 
algebra
can somebody help me out? am I doing this right? using the elimination method. y = 3x + 2 2y6x=4 We have the solution for y so we use this to solve 2 (3x + 2) – 6x = 4 6x + 4 – 6x = 4 0x +4 = 4 Subtract 4 from both sides X=0 Now we use 0 for the x
asked by kelly 
communication
what sistuations lend themselves to evaluation
asked by annie 
communication
how interest rates affect our purchasing decisions
asked by annie 
algebra
rowing. Abby rows 10 km upstream and 10 km back in a total time of 3 hours. The speed of the river is 5km/h.Find Abby's speed in still water.
asked by sheba 
intermediate algebra
Solve uing the subtitution method. Show your work. If the system has no solution or an infinite number of solutions, stat this,3x15y=12 3x+24y=12
asked by ROCKY 
intermediate algebra
Solve using the elimination method. Show all work. If the system has no solution or an infinite number of solutions, state this. 3x+7y=77 2x+7y=42
asked by ROCKY 
intermediate algebra
rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero. [3}^4  ua^2}
asked by ROCKY 
math
graph x+5y=10
asked by Anonymous 
algebra
variable to represent one quantity and second a theater sold 220 more adult tickets than childrens tickets
asked by leslie 
PreCalc
cot 19.8 degrees
asked by Betsy