Friday

July 29, 2016
Total # Posts: 284

**Chem **

How would the reducing agent NaBH4 compare with that of LiAlH4?
*March 15, 2012*

**english**

I really need someone to help with errors. Teenagers and Driving: A Dangerous Combination Teenagers and vehicles can be a very dangerous combination. Teenage drivers are four times more likely to be involved in a motor vehicle crash than drivers of older age. According to the ...
*January 31, 2012*

**English **

I really need help with my writing. I need some to proof read a paper that I wrote. Two Career Families versus One Career Families Back in the early days the traditional working family was a one career family. The roles of husband and wife were defined and everyone did as they...
*January 28, 2012*

**physics**

How much kinetic energy does a 2000 kg traveling 70 mph have?
*January 24, 2012*

**Literature & Writing**

In Bless Me, Ultima I have some questions about the scenes where Antonio talk with Florence about sin and God in chapter 17. The page numbers are in the 190s in the small book or early 200s in the bigger book. I lots of ideas, but it's nice to have external feedback. 1. ...
*January 21, 2012*

**geometry**

The measure of the side of rhombus GHIJ is equal to the measure of the side of square RSTU. Which statement about the two quadrilaterals must be true? A. Their angle measures are equal. B. Their diagonal measures are equal. C. Their areas are equal in measure. D. Their ...
*December 1, 2011*

**geometry**

The measure of the side of rhombus GHIJ is equal to the measure of the side of square RSTU. Which statement about the two quadrilaterals must be true? A. Their angle measures are equal. B. Their diagonal measures are equal. C. Their areas are equal in measure. D. Their ...
*December 1, 2011*

**Regression analysis**

1) Salary levels are determined by a number of important factors such as the years of experience, education level, job classification, etc. Other factors that contribute to salary levels might be due to gender or racial discrimination. Discuss how a dummy-variable regression ...
*November 10, 2011*

**math**

304-152=152
*November 4, 2011*

**math**

use each of the digits 0 1 3 4 5 exactly once to write a decimal subtraction problem.the difference must be the same as one of the decimals in the problem
*November 4, 2011*

**geometry**

the amount of metal in the nut?
*October 16, 2011*

**7th grade Math **

What is 32 te/min un./s
*October 12, 2011*

**Physics 1**

5.28 seconds
*October 4, 2011*

**maths urgent**

The average mass of half the number of crabs in a basket is 350g, the average mass of the remaining crabs is 300g. If the total mass iof the crabs in the basket is 13kg, how many crabs are there in the basket?
*September 22, 2011*

**Chemistry**

13.0
*September 9, 2011*

**Chemistry**

12
*September 9, 2011*

**physics**

the moon orbits the earth in a circle (near enough) of radious 3.8x10^8 m, taking 27.3 days to make a complete orbit. what is the speed of the moon relative to the earth?
*September 8, 2011*

**mathsP5**

I agree but my teachers don't care and even wrong answers have to be solved by ourselves and I keep getting them wrong again tks to both of you for your help
*August 20, 2011*

**mathsP5**

There are 2 packets of flour, Y & Z.The ratio of the mass of Y to Z is 4:1. If 26g is added to Z,the ratio of the mass of Y to Z is 7:5. Find the mass of the 2 packets at first. Pls show how to solve by model method as i have not learnt algebra. tks
*August 20, 2011*

**Maths **

thanks
*August 16, 2011*

**Maths **

The breadth of a rectangular plot of land is 85% of its length. The difference between the length and breadth is 18m. A) what is the length B) what is the area
*August 16, 2011*

**Maths**

I'm sorry, I can't get it, pls help clarify. thanks
*August 16, 2011*

**Maths**

Mr T's salary is $800 less than 3 times of his wife's salary. His wife's salary is 4/10 as much as his. how much is their total monthly salary?(non-algebra method pls)
*August 16, 2011*

**maths**

16 similar writing pads and 24 similar jotter books are stacked in a pile. their total thickness is 14.4cm.Each writing pad is 3x as thick as each jotter book. what is the thickness of the pile of jotter books? Please show me a non-algebraic method of solving this.Thanks
*August 15, 2011*

**Maths**

Sorry, i need to solve this by a non-algebraic way as we have not learnt algebra yet. Can you show me how? Tks.
*August 14, 2011*

**Maths**

16 similar writing pads and 24 similar jotter books are stacked in a pile. their total thickness is 14.4cm.Each writing pad is 3x as thick as each jotter book. what is the thickness of the pile of jotter books?
*August 14, 2011*

**Maths**

ok, thanks. I get it now.
*August 14, 2011*

**Maths**

That was not the answer the teacher gave. It was $179.50 for the coat. How do I get this answer?
*August 14, 2011*

**Maths**

Mr Zubir bouught a pair of pants, a shirt and a coat. The pair of pants and shirt costs $100.90. The pants and coat costs $244.50. The coat costs 5 times as much as the shirt. How much did Mr Zubir pay for his coat?
*August 14, 2011*

**Maths**

Caharles can buy 50 oranges and 60 apples for $100. He can 100 oranges for $100. How many apples can he buy for $100?
*August 7, 2011*

**Maths**

1/7 of Matthew's allowance is equal to 3/8 of Ryan's allowance. What is the ratio of Matthew's allowance to Ryan's?
*August 7, 2011*

**Math**

Abdul and his brother weigh 15.25kg. Abdul and his father weigh 72.25kg. What is Abdul's weight?
*August 4, 2011*

**maths**

the mass of a boy is 36.1kg when rounded off to 1 decimal place. If his mass is less than 36.1kg, what is his possible mass?
*July 25, 2011*

**chemistry**

industral chemistry and petrochemicals technology
*July 7, 2011*

**music **

look him up on Google and try to fi8ned info about him!!!
*June 28, 2011*

**6th grade math**

how do you round the number 128 to the nearest tenths place
*June 27, 2011*

**com 156**

yes it is possible if they put a lot of effort in there work like if you played an instrument and you wanted to write a song to the president about politics then you could do it becoas you would be putting a lot of effort
*June 24, 2011*

**Maths Parabola**

if a parabola is defined by f(x)=ax+bx+c,where a straight line is defined by g(x)=-1/2x.then Df=R,Rf=(-2,infinity) and b/2a=2 determine a,b and c and write down the equation of f.
*June 6, 2011*

**Maths**

suppose function f,g,h and l are defined as follow:f(x)=4xsquared-5x+1,g(x)=-1/2x-3,h(x)=squared root(2-x)squared+1/2x,l(x)=square root2-x-3. .write down Df and solve inequality f(x)<0 .write down Dg and solve 4g(x)=8 .write down Dh,Dg+h and solve the (g+h)(x)=0 .write down...
*June 6, 2011*

**algebra**

Essay; show all work. Consider that the age, x, of a unicorn in human equivalent years can be given by the formula f(x) = - 0.001518x4 + 0.097326x3 – 1.3367x2 + 12.46x + 2.914. When a unicorn is 2.5 years old, what is its age in human equivalent years? What about when it ...
*May 31, 2011*

**algebra**

Essay; show all work. Bob’s Barber Shop estimates their gross revenue for the second quarter to be given by the polynomial 2x3 – 3x2 + 7x – 1. The shop estimates their costs for that quarter to be given by x2 + 4x + 2. For the second quarter, find and simplify ...
*May 31, 2011*

**LIT**

Dresden was a German city destroyed by the allies in WWII. Which of the following most likely describes the allusion to Dresden? A Dresden was the center for the production of weapons that supported the German war effort. B Dresden was a city rich with old cultural monuments ...
*May 17, 2011*

**lit**

I want to say it copan because it's an city that has a historical record.
*May 17, 2011*

**lit**

Copán is one of the most impressive sites for ruins of the ancient Maya civilization. Situated in western Honduras, Copán is where the great Maya civilization flourished. Though other Maya ruins have been found in neighboring countries, no other quite like Cop&...
*May 17, 2011*

**lit**

What is the historical allusion? For the last several months, Rebecca had been working with her team on raising money in her neighborhood to donate to the hurricane Katrina Relief Fund. They were having a competition with groups to see who could raise the most money in a year...
*May 17, 2011*

**english**

no other choice only those
*May 17, 2011*

**english**

jeffersonia
*May 17, 2011*

**english**

what is the allusion. Last year our school’s finances were in shambles. Overspending and little control over money has resulted in a situation where there is no money for new books or supplies. School officials are even wondering where they will find the money to pay the ...
*May 17, 2011*

**english**

yes
*May 15, 2011*

**lit**

n 1946, Albert Einstein said if he had known the Germans wouldn't succeed in constructing the atom bomb, he "would never have lifted a finger." Did I punctuate correctly?
*May 10, 2011*

**lit**

"One day I'm going to be an astronaut," Adelle told her sister. Did I punctuate correctly?
*May 10, 2011*

**lit**

Jocelyn asked her mom, "What was it like when you were a child?" Did I punctuate correctly?
*May 10, 2011*

**lit**

What did the philosopher Aristotle mean when he said, "To perceive is to suffer"? Did I punctuate correctly?
*May 10, 2011*

**lit**

"Maybe we should wait to begin until everyone is seated," Ana said to her band mates. did I punctuate this correctly?
*May 10, 2011*

**lit**

"Ouch, that hurts!," Kadra said after stubbing her toe. is this correct?
*May 10, 2011*

**lit**

When Marcos walked into the room, we turned on the lights and yelled, "Happy birthday!" is this correct punctuation?
*May 10, 2011*

**lit**

the sentence is given without punctuation I have to add them I didn't see any is that correct
*May 10, 2011*

**lit**

Antony invited us over to check out his, "awesome new board." is this correct
*May 10, 2011*

**lit**

I had a thought should never be lower case or is that coreect
*May 10, 2011*

**lit**

Oh I see Thanks!
*May 10, 2011*

**lit**

My mom says, "Never wear anything but a suit to a funeral or a wedding." is this it?
*May 10, 2011*

**lit**

Is a comma missing?
*May 10, 2011*

**lit**

My mom says "Never wear anything but a suit to a funeral or a wedding." is this correct punctuation?
*May 10, 2011*

**lit**

Ms. Sardelis said we must "absolutely and without delay" turn in our permission slips by tomorrow or we can't go on the class trip. is this correct
*May 10, 2011*

**lit**

The defendant stated that she was, "not guilty." is this correct punctuation?
*May 10, 2011*

**lit class **

we are really stuck on this one we searched the website that you suggested but are still stuck this is what we came up with is this correct punctuation? Jawaharlal Nehru, the first prime minister of independent India, said that, "culture is the widening of the mind and of...
*May 10, 2011*

**Lit class**

I'm going to be asking for the help for all of us does this have correct punctuation? two of us said no and the other two says yes My mom says "Never wear anything but a suit to a funeral or a wedding."
*May 10, 2011*

**Lit class**

No, it's really a group of us that's working together. we are just using all of our names to ask. really!!!!! we didn't think it would be a problem
*May 10, 2011*

**Lit class**

Did I punctuate this correctly? "Daddy, why is the sky blue?" Martinique asked her father. the quotation mark goes behind the question mark right?
*May 10, 2011*

**math**

2316
*March 30, 2011*

**Math **

melissa invested a some of money at 3% annual simple inter she invested 3 times that some at 5 % annual simple interest if her total yearly interest from both investments was 7200 how much was invested at 3% ?
*March 30, 2011*

**Statistics**

The null hypothesis,H0:u=48,was tested against the alternative hypothesis,H1:u>48.A sample of 75 resulted in a calculated p-value of 0.102.if standard deviation=3.5,the value of the sample mean is?need help
*March 23, 2011*

**Statistics**

The amount of fill(weight of contents)put into a glass jar of spaghetti sauce is normally distributed with mean=850g and standard deviation=8g.the probability that a random sample of 24 jars has a mean weight greater than 848g is?need help
*March 23, 2011*

**Statistics**

Of 100 people who were given a vaccine,80 developed immunity to a disease.the 98% interval on the proportion of people developing immunity is?need help
*March 23, 2011*

**Chemistry**

What is a photon? Several selections may be correct. Has an energy of equal to hν. Is a unit of electromagnetic radiation. Is a part of the electromagnetic spectrum. Is usually called visible light. None of these.
*March 14, 2011*

**Chemistry**

a 23ml H2SO4 solution is titrated by 50 ml 0.10 M NaOH solution, what is the molarity of H2SO4 solution? (Note that H2SO4 is a diprotic acid)
*March 14, 2011*

**Algebra**

292
*March 8, 2011*

**Maths literacy**

Write 78/115 as a decimal fraction
*February 26, 2011*

**algebra**

Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -7x – 5y = 1.5 -5x – 4y = 4.5
*February 22, 2011*

**algebra**

Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -x – 8y = 43 4x + 32y = 172
*February 22, 2011*

**algebra**

A dehydrated patient needs a 3.82% saline IV. Unfortunately, the hospital only has bags of 4% and 3% saline solutions. How many liters of each of these solutions should be mixed together to yield 5 liters of the desired concentration?
*February 22, 2011*

**algebra**

To buy both a new car and a new house, Tina sought two loans totalling $319,531. The simple interest rate on the first loan was 2.7%, while the simple interest rate on the second loan was 2.6%. At the end of the first year, Tina paid a combined interest payment of $8334.15. ...
*February 22, 2011*

**algebra**

Select the set of equations that represents the following situation: Mary invested one amount at 7% simple interest, and a second amount at 5% interest, earning $29.80 in one year. If she had switched the amounts, she would have earned $35.00. What were the two amounts? (...
*February 22, 2011*

**algebra**

Select the set of equations that represents the following situation: Mary invested one amount at 7% simple interest, and a second amount at 5% interest, earning $29.80 in one year. If she had switched the amounts, she would have earned $35.00. What were the two amounts? (...
*February 22, 2011*

**algebra**

Select the set of equations that represents the following situation: The cost of eleven CDs and twelve DVDs is $150.62; and the cost of one DVDs and twelve CDs is $116.07. How much do a CD and a DVD cost? (Points : 3) 11x + 12y = 150.62; 12x + 1y = 116.07 11x • 12y = 150....
*February 22, 2011*

**algebra**

Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -3x + 4y = -19.5 -3x + y = -10.5
*February 22, 2011*

**algebra**

Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. x + 10y = 41 x + 9y = 37
*February 22, 2011*

**algebra**

Select the set of equations that represents the following situation: Mary invested one amount at 7% simple interest, and a second amount at 5% interest, earning $29.80 in one year. If she had switched the amounts, she would have earned $35.00. What were the two amounts?
*February 22, 2011*

**Algebra**

Cody’s motorboat took 3 hr to make a trip downstream with a 6-mph current. The return trip against the same current took 5 hr. Find the speed of the boat in still water
*February 22, 2011*

**intermediate algebra**

Select the set of equations that represents the following situation: Mike invested $706 for one year. He invested part of it at 5% and the rest at 3%. At the end of the year he earned $28.00 in interest. How much did Mike invest at each rate of interest?
*February 21, 2011*

**Physics**

A Force,F=10N,applied at an angle of 37 degree above the horizontal,moves a crate a distance of 5m along a rough horizontal surface.A frictional force of 5N opposes the motion.what is the change in kinetic energy?
*February 18, 2011*

**statistics**

the correlation between two random variables X and Y is p=-0.75.it is given that X=1,2or3 with equal probability of 1/3 and Y=-1,-2or-3 with equal probability of 1/3.the covariance is equal to?i need help.i have been struggling to get the answer>
*February 11, 2011*

**Physics**

A 3kg mass moving initially to the right along the x axis with a speed of 8m/s makes a perfectly inelastic collision with a 5kg mass initially at rest at the origin.what fraction of the initial kinetic energy of the system is lost in the collision.what formula must i use.
*February 2, 2011*

**Physics**

A 3kg mass moving initially to the right along the x axis with a speed of 8m/s makes a perfectly inelastic collision with a 5kg mass initially at rest at the origin.what fraction of the initial kinetic energy of the system is lost in the collision.what formula must i use.
*February 2, 2011*

**Pre-Algebra**

Thank you, Ms. Sue!
*January 24, 2011*

**Pre-Algebra**

If 4 liters of motor oil cost $3.88, what is the price for 1 liter? I'm supposed yo set up proportions. This is how I set it up: $3.88/4 liters • 1 liter/p p= the price for 1 liter Please tell me if I set it up right and how to solve.
*January 24, 2011*

**physical science**

gravity
*January 17, 2011*

**Maths**

is 10*10exponent -3 a scientific notation?
*January 17, 2011*

**Physics**

Two points charges of 2uC and -6uC are located at the position(0.0)m and (0.3)m.Calculate the total electrical potential at the point (4.0)m due these two charges.
*January 17, 2011*