Tuesday

September 30, 2014

September 30, 2014

Total # Posts: 71,381

**Algebra/Steve**

thank you. and it keeps my mind on something else instead of crying Thank you for the prayers
*June 21, 2014*

**chemistry**

Can anyone explain to me the rate of disappearance and appearance? I had two problems and ive figured them out but i dont understand why they were solved this way. If the rate of appearance of Cr(SO4)3 is 1.24mol/min then what is the disappearance of C2H6O? 2 K2Cr207 + 8 H2SO4...
*June 21, 2014*

**programming oop **

I need a help regarding this. Compute and display the sum o 1st and 2nd number, Difference of sum and 3rd number, product of difference and 4th number, Quotient of product and 5th number using Eclipse Helios. My subject is OOP
*June 21, 2014*

**programming**

I need a help regarding this. Compute and display the sum o 1st and 2nd number, Difference of sum and 3rd number, product of difference and 4th number, Quotient of product and 5th number using Eclipse Helios. My subject is OOP
*June 21, 2014*

**math**

Create an equation you could use to calculate the cost one person spends on food for a year (assume no tax on the food), using this site. Your equation must work for any age range, and any gender
*June 21, 2014*

**geometry**

Find the image of P(–2, –1) after two reflections; first , and then . A. (–2, –1) B. (–1, –6) C. (4, –9) D. (1, –5)
*June 21, 2014*

**business**

You have just received good news. You have inherited $1,000,000 from a distant relative. You have to meet two goals with the money: one, start a small business and not spend more than $250,000 in total in the next 2 years, and two, save for your retirement in 30-35 years. How ...
*June 21, 2014*

**chemistry**

thank you
*June 21, 2014*

**chemistry**

What is the magnitude change in pH when 1.8g of NaOH is added 1L of a solution that is 0.100M in NH3 and 0.100 in NH4Cl? Kb for NH3 1.8 * 10^-5
*June 21, 2014*

**algebra**

To repair his kitchen subfloor, John cut a rectangular piece of plywood such that width and length were two consecutive odd integers. If the product of the length and width is 99, what were the dimensions of the piece of plywood?
*June 20, 2014*

**math**

I want to make a recipe which calls for 4/7 cup of granola. I only want to make 3/8 of the recipe. How much granola do I need to use.
*June 20, 2014*

**health**

Can someone help explain these directions?? For the energy-yielding nutrients, please convert the amount (grams) consumed to calories. This can be done by multiplying the amount of that nutrient consumed by the respective number of calories it provides (protein and ...
*June 20, 2014*

**health**

I am having difficulty with calculating the energy-yielding nutrients to gram and calories in order to figure out percent of energy contributed by that nutrient.
*June 20, 2014*

**stats**

A random sample of 50 households in community A has a mean household income of X =Rs. 44,600 with a standard deviation s =Rs. 2,200. A random sample of 50 households in community B has a mean of X = Rs. 43,800 with a standard deviation of Rs. 2,800. Estimate the di&#...
*June 20, 2014*

**Math**

A radioactive material takes 60 days to cut its radiation in half. If it starts at 100%, when will it be at 5%?
*June 19, 2014*

**chemistry**

what would the written chemical reaction be to this problem? How many grams of hydrochloric acid should we use so we have exactly enough to react with 40g of sodium hydroxide? You'll need to write a chemical reaction, balance it, and then perform your calculation.
*June 19, 2014*

**math**

Jefferson Bank made a loan at 6% interest for 146 days. If the amount of interest was $36.50, use the ordinary interest method to find the amount of principal borrowed. Round to the nearest whole dollar amount
*June 19, 2014*

**physics**

Find the work done by 2.32 moles of an ideal gas if its volume doubles at a constant temperature of 22.6°C.
*June 19, 2014*

**Chemistry**

A solution of KCI is saturated at 50 degrees C. How many grams of solute are dissolved in 100g of water?
*June 19, 2014*

**chemistry**

A solution contains 72.0 g of HCl and 468 g of (C6H6). What is the mole fraction of benzene?
*June 19, 2014*

**Physics**

You have a grindstone with a mass of 90.0 kg, 0.340-m radius, and is turning at 90.0 rpm. You press a steel ax against it, bringing it to a stop in 36.0 s. (a) What is the change in kinetic energy of the grindstone? (b) If the tangential force due to the friction between the ...
*June 19, 2014*

**english**

1. Give two examples of each of the following elements of fiction and nonfiction from the texts you’ve read in Units 1, 2, and 3. Characters: Plot: Conflict: Setting: Point of View: Theme: Style: Tone: Perspective: Bias: Purpose:
*June 19, 2014*

**physics**

Physics? Looks like elem calculus to me.
*June 19, 2014*

**math**

From a survey of 100 college students, a marketing research company found that 55 students owned iPods, 25 owned cars, and 15 owned both cars and iPods. (a) How many students owned either a car or an iPod (but not both)?
*June 19, 2014*

**geometry**

The angle of depression from D to F measures 25°. If EF = 10 yd, find DE
*June 19, 2014*

**Trigonometry**

solve: sec x-2^.5=0
*June 19, 2014*

**physics**

an electric hot water heater takes in cold water at 13.0 degrees celsius and delivers hot water. the hot water has a constant temperature of 45 degrees celsius when the "hot" faucet is left open all the times, and the volume flow rate is 5.0 x 10 ^-6 m^3/s. what is ...
*June 18, 2014*

**Math**

146 pound
*June 18, 2014*

**Math**

How much will it cost to carpet a room that's 12ft by 15ft if the carpet cost $25 per square yard
*June 18, 2014*

**Finance**

1. (Covered Interest Arbitrage) Harry Norman, a foreign exchange trader at UBS’s office in Tokyo has $2,000,000 or its yen equivalent to invest. He faces the following exchange rates and interest rates. Show how can he profit from the covered interest arbitrage? Spot rate...
*June 18, 2014*

**Finance **

1. (Covered Interest Arbitrage) Harry Norman, a foreign exchange trader at UBS’s office in Tokyo has $2,000,000 or its yen equivalent to invest. He faces the following exchange rates and interest rates. Show how can he profit from the covered interest arbitrage? Spot rate...
*June 18, 2014*

**Physics**

46 mph
*June 18, 2014*

**algebra**

the quotient of g and 9
*June 18, 2014*

**Chemistry**

If 4.168 kJ of heat is added to a calorimeter containing 75.40 g of water, the temperature of the water and the calorimeter increases from 24.58°C to 35.82°C. Calculate the heat capacity of the calorimeter (in J/°C). The specific heat of water is 4.184
*June 18, 2014*

**algebra**

If John stands near a 30 foot tall tree and leans a 50 foot tall ladder against the tree that reaches to the top of tree, then how far is John standing away from the tree? (Round to the nearest hundredth)
*June 18, 2014*

**physical chemistry**

I DONT KNOW
*June 18, 2014*

**math**

Lily designed a deck in her backyard that is in the shape of a quadrilateral that has only 1 pair of parallel sides. What is the shape of the deck?
*June 17, 2014*

**organic chemistry**

1. Arrange the following in order of decreasing reactivity toward nitration. Fully explain please I could use some help!! A. acentanilide, b. bromobenzene, C. acetophenone, D. toluene 2. Explain why p-nitrophenol is a stronger acid than phenol itself? Would p-methoxyphenol be ...
*June 17, 2014*

**algebra**

a rise of 4 meters and a rise of 6 meters
*June 17, 2014*

**Math**

Thanks ...its easy for you because your good in math. IM not.
*June 17, 2014*

**Math **

Use back substitution to solve the system of linear equations x-2y+z=8 y+z=5 z=2 **I tried to solve it eventho im still confused/lost. 1=3 idk ugh
*June 17, 2014*

**algebra**

Select the approximate values of x that are solutions to f(x)=0, where f(x) = -2x^2+8x+5
*June 17, 2014*

**chemistry**

"To save on production costs, most automobile bumpers are never coated with more than 200 g of chromium. Determine how much time a standard bumper should be immersed in a chromium vat." This is what I have so far- 96,485 coulombs are required to plate 1 Cr; 52/6 = 8....
*June 17, 2014*

**MATH **

Solve the system of linear equations 2x+y-3z=4 4x+2z=10 -2x+3y-13z=-8 *im so lost (all these numbers are in one problem)
*June 17, 2014*

**algebra**

scs paid $4400 to buy desks.it bought d desks all together.What algebric statement shows the cost for one desk?
*June 17, 2014*

**medical billing**

if an institutional review board is involved in a request information, the information is likely by a
*June 17, 2014*

**Organic Chemistry**

These questions are somewhat difficult. I believe I am on the right track, but I want to make sure. 1. List these compounds in order of decreasing reactivity towards nitration. Explain your answer. a) acetanilide b) bromobenzene c) toluene d) acetophenone 2. a) Which is the ...
*June 17, 2014*

**physics**

A person sitting quietly in a room on a winter day may lose heat primarily by radiation from the outer surface of her clothes to the walls of the room. If the walls are at 11.5° C and the rate of radiation is 75.2 kcal/h (a typical basal metabolic rate), what is the ...
*June 17, 2014*

**Leadership**

Any order which you think is important! I don't know but I need help and assistantance
*June 17, 2014*

**Leadership**

I need help to put these characteristics in order. Please help me!! - dance ability -leadership -morality -ethical -responsible -caring -structured -organized -initiative -respectful
*June 17, 2014*

**biology**

Discuss the concept of species. What ways do modern taxonomists use to distinguish different species?
*June 17, 2014*

**Statistics**

there is a 1/5 (.20) probability that one type of appliance will break with in two years. find the probability that 4 out 15 such appliances willl break within that time period
*June 17, 2014*

**MaTh..**

Determine whether the system of equations is in row-echelon form. x-y+3z=-11 y+8z=-12 z=-2
*June 17, 2014*

**math**

Mr. Simon landscapes new houses for a building contractor. He charges by the square meter of yard space plus a setup fee. He billed the contractor $2,150 for a 400-square- meter yard and $1,650 for a 300-square-meter yard. Write an equation in the form y = mx + b that can be ...
*June 17, 2014*

**physics**

A sailboat race course consists of four legs, defined by the displacement vectors , , , and , as the drawing indicates. The magnitudes of the first three vectors are A = 2.80 km, B = 4.70 km, and C = 4.50 km. The finish line of the course coincides with the starting line. ...
*June 17, 2014*

**gometry**

in a circle of radius 17cm, two parallel chords are drawn on opposite sides of a diameter. the distance between the chords is 23cm. if the length of one chords is 16cm, find the length of the other.
*June 17, 2014*

**Maths**

30% of the pupils in a class are boys.there are 21 girls.how many pupils are there in the class in all?
*June 17, 2014*

**Maths**

30% of the pupils in a class are boys.there are 21 girls.how many pupils are there in the class in all?
*June 17, 2014*

**math**

'a gardener plants an orchid with 5776 trees. in each row there were as many trees as the number of rows. find the number of rows'
*June 17, 2014*

**math**

Approximately how much principal would need to be placed into an account earning 3.575% interest compounded quarterly so that it has an accumulated value of $68,000 at the end of 30 years?
*June 17, 2014*

**chemistry**

Calculate the volume of nitrogen gas that will be produced in the air bag of a car when 88,8g of sodium azide is thermally decomposed at 22 C to give the bag a pressure of 1,10 atm
*June 17, 2014*

**English**

Which one of the following statements about making your writing fun to read is not correct? A. The conversation you write must sound natural for the characters. B. An anecdote or humorous quotation is often more convincing than a strong argument. C. Direct quotations should be...
*June 16, 2014*

**English**

Which statement is most accurate regarding the speaking-writing connection? A. The words used by writers are not normally used in speaking. B. To own a word, speak it. C. Written words seldom reflect the words people use when they speak. D. To own a word, write it over and ...
*June 16, 2014*

**english**

What is the name of the common error in the following sentence? Having risen because of the rains, the hikers were unable to cross the river. A. Run-on sentence B. Infinitive phrase C. Prepositional phrase D. Dangling modifier correct C. PrepositioNal phrase
*June 16, 2014*

**writing**

Choose the connective that belongs in the blank in the following sentence. Everyone appeared to be having a good time. _______, my impressions may have been wrong. A.In other words B.Furthermore C. Of course D. In fact CA. C. Of course
*June 16, 2014*

**Physics**

A high diver of mass 70 kg jumps off a diving board and enters the water with the speed of 10 m/s the average upward resistance force of water exerts on the diver is 200 N. How far in the water will the diver travel before coming to rest?
*June 16, 2014*

**Physics**

An antitank weapons fires a 3.5 rocket, which acquires a speed of 70 m/s after traveling 90cm down a launching tube. Find the net force during lonch?
*June 16, 2014*

**physics**

A 5kg crate falls from height of 2 m into an industrial spring scale. When the crate comes to rest the compression of the spring is 25 cm what is the spring constant?
*June 16, 2014*

**MATH**

What if we have .. integration of xe^(|x|) dx from negative infinity to x.
*June 16, 2014*

**MATH**

what is the integration of e^-|x| from negative infinity to x ?
*June 16, 2014*

**American National Government**

If the President requests a Congressional authorization for the use of force, Congress
*June 16, 2014*

**Reading**

What are some good books to read for 7th grade?
*June 16, 2014*

**history**

After the election of 1890, organized groups supporting farmers called for the formation of a third party that became generally known as the _______ Party.
*June 16, 2014*

**CHEMISTRY **

COPPER
*June 16, 2014*

**algebra 2**

The height of an arrow shot in the air is given by the function h(t)=-16t^2+144t+24, where h(t) represents the height in feet, and t represents the time in seconds. what is the maximum height of the arrow? how long does it take to reach the maximum height? how long does it ...
*June 16, 2014*

**Statistics**

Assume that a standardized test is designed to have the mean score of 100 and the standard deviation of 15. At the 95% confidence interval, how large does the sample size have to be if the margin of error is to be 3 points?
*June 15, 2014*

**math**

Compute Sun Jung's estimated tax payment for the second quarter. She is self-employed and she expects to earn $61,760 this year. Her estimated income tax rate is 23%. For self-employed persons, social security tax is 12.4% of wages up to $106,800, and Medicare tax is 2.9% ...
*June 15, 2014*

**chemistry**

calculate the percentage by mass of oxygen in trioxonitrate(v) acid
*June 15, 2014*

**chemistry**

calculate the percentage by mass of ozygen in trioxnitrate5 acid H-1, N-14, O-16
*June 15, 2014*

**English**

Which of these two sentences is correct? Is there a different correct format? This construction is different than in English. This construction is different from English.
*June 15, 2014*

**physics**

a pendelum in a fathers clock measures .90m from the support to the centerof the bob
*June 15, 2014*

**physics**

The cg of the 50.0 N pole held by the pole vaulter is 2.00 m from the left hand, and the hands are 0.700 m apart. Calculate the force exerted by each hand.
*June 14, 2014*

**Physics**

A person is carrying a plank of wood 2.00 m long with one hand pushing down on it at one end with a force F1 and the other hand holding it up at 50.0 cm from the same end of the plank with force F2. If the plank has a mass of 20.0 kg and its center of gravity is at the middle ...
*June 14, 2014*

**Physics**

Use Newton's second law: F=ma F=(1 kg)*2 m/s² = 2 N If F=2N and a=8m/s², then m=F/a
*June 14, 2014*

**Physics**

Use Newton's second law: F=ma, or a=F/m
*June 14, 2014*

**Algebra**

simplify 5!/3! A. 5 B. 20 C. 40 D. 120
*June 13, 2014*

**Algebra**

A ramp leads up to a building. The top of the ramp is 4 feet above the ground, and the bottom is 14 feet from the building. what is the length of the ramp? I think the answer is 18 ft. choices are: A. 18.6ft B. 18ft C. 14.6ft D. 10ft
*June 13, 2014*

**Algebra**

would it be B
*June 13, 2014*

**Algebra**

Ms. Chang has 24 students in her class, and 8 of them are boys. What is the ratio of boys to girls? A. 1:2 B. 1:3 C. 2:1 D. 2:3 I think the answer is D but i'n not sure.
*June 13, 2014*

**Physics**

Use 1/f=1/di + 1/do and Magnification M=hi/ho=-di/do Use metres throughout do=0.30 f=+0.08 m (converging lens) di=1/(1/f-1/do) =0.1091 (image distance) So image is real (di >0) and on the right-hand (emerging) side of the lens. M=-di/do=-0.364 (image smller, inverted, M<0)
*June 13, 2014*

**BIB 351**

What was Balaam's relationship to Yahweh according to the Book of Numbers 22-25? Please Help!
*June 13, 2014*

**Algebra**

A garden is going to be built in the city park. the garden height is 5m. and the width is 7.5 m. a. A short fence will be built around the perimeter of the garden region. Find the number of meters of fencing required. Round your answer to the nearest tenth of a meter. Show all...
*June 13, 2014*

**Algebra**

Thank you
*June 13, 2014*

**Algebra**

1. A printer can print 40 pages in 1.6 minutes. a. Write and solve a proportion to find the number of pages that the printer can print in 5 minutes. Show your work. b. Lana wants to use the printer to print 150 pages. Find the time, in minutes, it will take to print 150 pages...
*June 13, 2014*

**algebra**

cube labeled 1 to 6 rolls 450 times. predict rolling less than 3
*June 13, 2014*

**algebra 2**

Maria created a graph of B(t), the temperature over time. For the interval between t = 3 and t = 7, the average rate of change in her graph of B(t) is 8. Which statement must be true?
*June 13, 2014*

**physics**

A car of mass 537 kg is moving 32.0° North of East at a speed of 22.7 m/s. What is the magnitude of the momentum of the car? (magnitude - how big is it? ignore direction)
*June 13, 2014*

**Statistics**

1-P(B|A) =1-P(B∩A)/P(A) =( P(A)-P(B∩A) ) / P(A) =P(A\B)/P(A) P(B'|A) =P(B'∩A)/P(A) =P(A\B)/P(A) So yes, they are equivalent. =
*June 13, 2014*

**College Algebra **

A quadratic function has its vertex at the point (-9,8). The function passes through the point (9,4). When written in vertex form, the function is f(x)= a(x-h)^2 +k, where a) h)-9 k)8 4=a(9)^2+8 4=a(9+9)^2+8 4=a(18)^2+8 4=a(332) a=0.01204 I was able to find both h & k. but the...
*June 12, 2014*

**College Algebra **

The graph of a quadratic function f(x) is shown above. It has a vertex at (-2,4) and passes the point (0,2). Find the quadratic function y=a(x-(-2))^2+4 y=a(x+2)+4 2=a(x+2)+4 -4 -4 -2=a(0+2)/2 -1+ a function -1(x+2)+4 ? Im not sure where Im going wrong but my answer was ...
*June 12, 2014*

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