Wednesday
October 22, 2014

Posts by mark


Total # Posts: 1,255

math
and show work
February 16, 2012

math
4x-y=3 4x+y=1 sorry
February 16, 2012

math
2x+3y=3 3y=5-2x 4x-y=3 4x=y=1 solve and explain please
February 16, 2012

English
Hi! Any ideas on an activity which could last for 45 minutes? The topic - Valentine's day Learners: 16 year old, 30 in the class, learning English as a foreign language for 7 years
February 13, 2012

English - Native speakers
Please paraphrase the phrase into a bit simpler English involving arrested development of engorged stages or of eggs.
February 10, 2012

American Government
Thank you I think I know what I can put for my answer now.
February 8, 2012

American Government
What are two present day example that shows establishing justice? I'm not very good with coming up with modern examples only historical ones.
February 8, 2012

Geography
What are 5 precious resources that Africa possesses in abundance?
February 8, 2012

math
5/315
February 8, 2012

Physics
tan(theta)=0.800/0.625
February 5, 2012

English
Hello If you had a topic "Murphy s law" and you had to work on it in the classroom for 90 minutes, what would you do? I have a text on Murphy s law, I thought to teach the children time clauses. My idea: work on the text for 45 minutes and then introduce time clauses...
February 5, 2012

algebra
Simplify: 53 x 56
February 2, 2012

chemistry
a certain paint has a density of 0.914 g/mL. you need to cover a wall that is 7.6 meters long and 2.74 meters wide with a layer of paint that is 0.13 mm thick. what volume of pain (in liters and gallons)is required? what is the mass (in grams and pounds) of paint layer?
February 1, 2012

math
Find a common denominator: 5/8 + 5/6 = 15/24 + 20/24 = 35/24
January 31, 2012

English
Hello Can you please come up with a few questions on the following topic: my free time I need to have a few questions which I would answer and in that way write my essay. But I am totally out of ideas :/
January 30, 2012

business
I need help Describing the organizational structure for Walmart.
January 29, 2012

English - Native speakers
Hello I have a question concerning the following sentence: Teachers are these days very patient and give more information and they explain it better. Can we say explain them better also? Which one is correct?
January 29, 2012

English
I put the wrong subject sorry. Needed it in German. I'll try to find something. Thank you :)
January 26, 2012

English
Can you give me a good topic for 30 minute discussion in German language? I just want to warn you that the class is pretty lazy, unmotivated, always sleepy and uninterested. They are 18 and 19 years old and are learning German for 9 years as a foreign language, but their level...
January 26, 2012

Statistics-Probability
P(6)=(8)^6/6!e-8
January 25, 2012

University of Phoenix
I need to evaluate the planning function of management as it relates to the organization's goals and strategies. I need to use the steps in the planning process. I do not know where to begin The class in MGT/230
January 23, 2012

Word 2007-pages
Hello Does anyone know how to number the first 4 pages in a word document (2007) with roman numbers and then start from the fifth page with the number 1?
January 23, 2012

chemistry
I got C_4 H_3 O_8 for this question but I'd like someone to check my answer, please. A 1.012 g sample of a compound containing C, H, and O was burned to produce 2.145 g CO2 and 0.3293 g H2O. Calculate the empirical formula of the compound
January 21, 2012

chemistry
Is this correct? A 0.1471 g sample of a compound containing C, H, and F was burned to produce 0.1960 g CO2 and 0.08024 g H2O. If the molar mass of the compound was determined to be approximately 66.05 g/mol, what is its molecular formula? My answer is: C_12 H O_20
January 21, 2012

Chemistry
A 0.5595 g sample of a compound containing C, H, and O was burned to produce 1.429 g CO2 and 0.5850 g H2O. If the molar mass of the compound was determined to be approximately 86.13 g/mol, what is its molecular formula?
January 20, 2012

chemistry
I ended up with C_2.809 H_2.106 O_1 so would that be C_3 H_2 O?
January 20, 2012

chemistry
I need help with this problem... A 1.208 g sample of a compound containing C, H, and O was burned to produce 2.561 g CO2 and 0.3930 g H2O. Calculate the empirical formula of the compound. I always get stuck when it comes to finding the subscript for this compound.
January 20, 2012

Chemistry
A 0.5595 g sample of a compound containing C, H, and O was burned to produce 1.429 g CO2 and 0.5850 g H2O. If the molar mass of the compound was determined to be approximately 86.13 g/mol, what is its molecular formula?
January 19, 2012

Math
john's columm covered the first 12 miles in 4 hours. he then increased the speed by 2 miles per hour. if the total distance of the trip was 52 miles, how long did it take to finish the trip
January 12, 2012

Algebra 1
2(8+4c)=32
January 12, 2012

math
i need help because i have to get to bed i hae work at 3:00 in the morning i need to help my lil bro with these questions please
January 6, 2012

math
helping lil bro with homework and he forgot to bring his books home and I cant remember anything 1. The word “risk” is used often in insurance discussions. Assume you have an apartment and how likely you are to buy Renter’s Insurance? 2. When you buy auto ...
January 6, 2012

BIO
Organisms that live in environments and are hypotonic have cell membranes that differ in permeability from those that live in isotonic environments. What water regulation adaptations might have evolved to allow these organisms to survive in different environments such as the ...
December 19, 2011

statistics
Do you think there is a correlation between CEO salaries and the degree of success of a company? If you were to take a sample of companies with comparable size, market capitalization, and product category, and plot CEO salaries against the net profit of their respective ...
December 17, 2011

Statistics
6. If we reject H0:µ = 10 in favor of Ha:µ 10 at a given level of significance with a positive value of the test statistic z, then if we test H0:µ = 10 versus Ha:µ > 10 using the same sample, Ha:µ > 10 will ______ be rejected at the same ...
December 17, 2011

English - Native speakers
Need a help from a native speaker of English. Can you fill in this text by using either Past Simple, Past Continuous or Past Perfect? You would really help a lot. Thank you When Craig Myers ____bought______(buy) his restaurant, he got it for a very good price because it ...
December 12, 2011

English - Native speakers
but i have the answers. :) Can you check them? bought, had been, wanted, was, was driving, didn't believe, had bought, called, was, was, tidied, was singing, went, checked, were, didn't feel, locked, started, fell, were sitting
December 12, 2011

English - Native speakers
Need a help from a native speaker of English. Can you fill in this text by using either Past Simple, Past Continuous or Past Perfect? You would really help a lot. Thank you When Craig Myers __________(buy) his restaurant, he got it for a very good price because it _________(be...
December 12, 2011

physics
A 69 kg person on skis is going down a hill sloped at 36° below the horizontal (+x direction). The coefficient of friction between the skis and the snow is 0.15. Find the x and y components of the weight of the skier going downhill.
December 11, 2011

biology
6) If the DNA sequence is GTAC, what will be the mRNA sequence? a) CATG b) CTUT c) CAUG d) UCGG 7) Given the codon UGC, what will be its anticodon? a) ACG b) TCG c) TGC d) AAT
December 6, 2011

Physics
Trailing by two points, and with only 1.00 s remaining in a basketball game, a player makes a jump-shot at an angle of 35.0o with the horizontal, giving the ball a velocity of 8.50 m/s. The ball is released 0.25 m below the height of the basket, which is 3.05 m above the floor...
December 4, 2011

Human Resource
Compare and contrast the following methods of job evaluation and include examples that are not the same as in the textbook to demonstrate understanding: Lott, Benge, and Multiple Regression. Identify the key differences.
November 27, 2011

English-tenses
thank you :) much clearer now ;)
November 25, 2011

English-tenses
Hello I have key answers for the following tasks but I would like a native speaker to explain to me the uses of tenses here.The students have to put past tenses here. I am especially confused with the sentence beginning with The vases, which.... isn't it a rule when we see...
November 25, 2011

statistic
based on 125 flights, 76% arrive on time. whats the probability that 80 flights arrive on time, probability that 20 or less flights are late?
November 23, 2011

math
Determine the least possible value for B to the nearest tenth if A = 30°, a = 5, and b = 8.
November 23, 2011

managerial economics
Recently one of the nation’s largest consumer electronics retailers began a nationwide television advertising campaign kicking off its “Take It Home Today” program, which is designed to encourage electronics consumers to buy today rather than continue postponing...
November 15, 2011

managerial economics
draw a game tree when sony makes its technology decision first.does sony experience a first-mover advantage
November 15, 2011

Trig
Thanks. Makes sense. My problem was I was trying to use another double argument property.
November 14, 2011

Trig
Solve the equation in the given domain cos 4x + cos 2x = 0, 0<(or equal to) x < pi
November 14, 2011

physics
A bullet of mass 4.7 g is fired horizontally into a 2.4 kg wooden block at rest on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.28. The bullet stops in the block, which slides straight ahead for 2.2 m (without rotation). (a) What is ...
November 8, 2011

Science
A 110.0 kg box is pushed by a horizontal force F at constant speed up a frictionless ramp which makes an angle of 35.0 deg with the horizontal. Find the magnitude of the applied force F.
October 26, 2011

Science
A lamp is suspended by a massless string from the ceiling of a descending elevator which decelerates at 1.6 m/s2. If the tension in the string is 82.0 N, what is the mass of the lamp?
October 25, 2011

Chemistry
The Ka of a monoprotic weak acid is 2.04 × 10-3. What is the percent ionization of a 0.181 M solution of this acid?
October 25, 2011

physics
The bead is accelerating on the horizontal plane in a circle with radius r=RsinB. This is derived from the angle that the bead makes with the vertical. Once you have the radius of the particles trajectory you need to find the forces acting on it. The two forces acting on the ...
October 24, 2011

Physics
A mortar shell is launched with a velocity of 100m/s at an angle of 30 degree above the horizontal from a point on a cliff 50m above a level plain below. How far from the base of the cliff does the mortar shell strike the ground?
October 24, 2011

statistic
A survey was made of 100 customers in a department store. 70 of the customers indicated they visited the store because of a newspaper advertisement. The remainder had not seen the ad. A total of 40 customers made purchases; of these customers, 30 had seen the ad. What is the ...
October 24, 2011

statistic
Wendy is a randomly chosen member of a large female population, in which 13% are pregnant. Wendy tests positive in a pregnancy test. Pregnancy test correctly identifies pregnancy 91% of the time and correctly identifies non pregnancy 95% of the time. What is the probability ...
October 24, 2011

physics
pt A: Fp - Ff. in this case, you would do 30.51 - 17.13 = 13.38
October 23, 2011

Chemistry
What are the concentrations of OH– and H in a 0.00070 M solution of Ba(OH)2 at 25 °C? Assume complete dissociation.
October 20, 2011

calculus
f(x)= e^-3x g(x)=x+x^2 calculate the following derivative (d/dx)f(g(x))=?
October 16, 2011

calculus
let y=(x+sin(x))^2 f(x)=? g(x)=? (f o g)'=? compute the derivative using the chain rule
October 16, 2011

Calculus
Given the following functions: F(u)= u^(5/2) and g(x)= x^6+1, find-f(g(x))=?, f'(u)=?, f'(g(x))=?, g'(x)=?,(f o g)'(x)=?
October 16, 2011

College Algebra
8,9), x + 2y = 7 please solve this for me
October 12, 2011

english
Okay so there is a non profit organization called Heifer. This group sends animals to 3rd world countries. It teaches people to raise animals on their own for food. One stipulation to receiving the animal is you have to give two of it's offspring to another family so they ...
October 11, 2011

math
simplify the following by adding like terms -4-6m+10n-56-n+9m
October 8, 2011

Math
Can someone please help me figure out the mean, standard deviation, raw score, and z-score of 27,3,4,16,0.. Any help is super appriciated.. thanks sooo much.
October 3, 2011

physics
a 2.00 m tall basketball player is standing on the floor 10 m from the basket. if she shoots the ball at a 40 degree angle with the horizontal at what initial speed mjust he throw the basketball so that it goes through the hoop without striking the backboard? the height of ...
October 3, 2011

Pyschology
When a result is significant, explain why it is wrong to say the result “proves” the research hypothesis. PLEASE HELP
October 2, 2011

Statistics
Please help me. I am working a paper that needs a verbal statment and a numerical statement. My hypthoesis is The use of social media Facebook is associated with an increase among couples.. if anyone can help that would be great. Thanks so much.
October 2, 2011

Science NEED HELP NOW
Hate the metric system
October 2, 2011

physics
sarah ride her bike at an average spped of 6m/s. how long does it take her to ride 6km (6,000 m)?
September 26, 2011

Chemistry
What is the empirical formula of a hydrocarbon that contains 89.94% C by mass?
September 18, 2011

Chemistry
What is the empirical formula of a hydrocarbon that contains 89.94% C by mass?
September 18, 2011

physics
Bob has a helicopter and from the launch pad he flies the following path. First he travels from the launch pad a distance of 33 kilometers at heading 10 degrees West of North. Then he flies 18 kilometers heading 45 degrees East of South. After this he flies 14 kilometers ...
August 28, 2011

science
what is the dependent and independant variable, force or pressure?
August 3, 2011

Math
a bag contains 3 red marbles, 5 blue marbles, 2 yellow marbles, and 2 lavender marbles. How many sets of 4 marbles includes at most one of the yellow marbles?
August 1, 2011

Math
Thank you Ms. Sue
July 27, 2011

Math
Jane has only $1 and $5 in her wallet, and they total $79.00. If she has a total of 23 bills, how many of each bill does she have?
July 27, 2011

math
How many sheets of plywood would it take to sheath a roof that covered a building 74' wide,248' long and has a roof pitch of 4" in 12"?
July 26, 2011

construction
How many square yards would it take to cover a ball that had a radius of 3'?
July 26, 2011

construction
A swimming pool is 120' long,45' wide and 10' deep.How long would it take to fill with water if your maximum fill rate was 15 gallons per minute?
July 26, 2011

health
need help in orthopedic physician assistant exam
July 16, 2011

science
in which of the following materials is the velocity of light greatest
July 10, 2011

Easy Pre-calculus Questions?
8.48 feet
June 30, 2011

English-Native speakers
This is a sentence in active and I have to write it in passive. My solution is: He was expected to bring the drinks or the drinks were expected to be brought which one is correct?
June 23, 2011

English-Native speakers
What is the passive of the following sentence? We expected him to bring the drinks
June 23, 2011

English - Native speakers
so the sentence he hoped they would all get what they wanted is not correct? There is no back shift of tenses?
June 23, 2011

English - Native speakers
oh no :) I thought how do we write it in reported speech?
June 23, 2011

English - Native speakers
"I hope you'll all get what you want" How does it sound in reported speech?
June 23, 2011

English - Native speakers
Is it better to use a little or little in the following example? If you have__________ time could you come and help me do my homework
June 23, 2011

English - Native speakers
can we use here a lot of hope?
June 23, 2011

English - Native speakers
Can we say : Scientist have a little hope of finding a cure for cancer or little hope.Can we say both? A little means positive and little negative
June 23, 2011

English-Native speakers
Is a producer synonym for a director?
June 23, 2011

English vocabulary
Is the synonym for: to have a leading role=to star
June 23, 2011

English Passive
Can you put this sentence in passive Her mother is teaching her French
June 23, 2011

English Passive
Can we say in passive: The bad news were or was given? The same with cast has been chosen or have been chosen?
June 23, 2011

English question tags
Why is the following sentence correct: Nobody is indispensable, is he? Why he? Which question tag can we use here?
June 23, 2011

English-Native speakers
Why do we use definite article in the sentence: I went to the airport at 8 o'clock. when this airport is mentioned for the first time?
June 23, 2011

English third conditional
Hello! For example we have a sentence If you________ (not/be) late, we____________(not/miss) the bus. Is it correct to say If you hadn't been late, we wouldn't have missed the bus? Can we write would have not missed? This is wrong right?
June 23, 2011

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