Tuesday
September 23, 2014

Posts by Anna


Total # Posts: 1,971

Algebra
you're welcome!
September 21, 2010

Algebra
I found this example on purplemath You coul use this and apply knowledge. This is the original equation. x2 + 6x – 7 = 0 Move the loose number over to the other side. x2 + 6x = 7 Take half of the x-term (that is, divide it by two) (and don't forget the sign!), and ...
September 21, 2010

Physics
The roadrunner leaves Pittsburgh at 7:15 in the morning at 10mph. He is headed toward Cleveland which is 131 miles away. If the coyote leaves 15 minutes later, what speed will he have to travel to get there at the same time as the road runner?
September 21, 2010

Physics
Two cars start from the same place at the same time. After two hours, one car has traveled 30% farther than the other. If one car's speed is 20mph larger than the other car's speed, what are teh speeds of the cars? Solve algebraically
September 19, 2010

algegra
Volume= length *width*height. Area is length*width. Therefore to find the volume you just need to multiply 56*6 which is 336
September 19, 2010

biology
energy that is lost at each trophic level of an ecosystem is replenished by????
September 19, 2010

calculus
how did you get all of those x's with exponents?
September 19, 2010

calculus
sorry i should have put lim tan(x)/x
September 19, 2010

calculus
I broke that down into the lim of sinx/(xcosx)
September 19, 2010

calculus
lim as x approaches 0 of tanx/x
September 19, 2010

Calculus
no its a 2.
September 18, 2010

Calculus
We don't start derivatives until the next chapter. I'm just don't understand how you can determine each side of a limit seperately without using a graph or chart.
September 18, 2010

Calculus
But now if it does not exist we have to go back and look at the limit as the function approaches from the left and from the right and describe the behavoir of the function for example if it approaches infinity or negative infinity. I don't know how to do that analytically ...
September 18, 2010

Calculus
Our professor wants us to evaluate the limits analytically without using a table or a graph, and if it doesn't exist we must describe the behavor near the limit point. I'm not sure how to evaluate each side of a limit seperately without looking at a table or graph. ...
September 18, 2010

Algebra 2
thanks
September 18, 2010

Algebra 2
Is the solution to 0 ≤ |4u - 7| u ≥ 7/4?
September 18, 2010

Algebra 2
-(y+3) = 2y - 5 -y-3 = 2y-5 -3y = -2 y = 2/3 Is this how to solve the equation?
September 18, 2010

Algebra 2
What two equations can you write from |y+3|+5=2y? I know one is y+3=2y-5, which becomes 8. Is there another equation possible?
September 18, 2010

Algebra 2
thanks
September 18, 2010

Algebra 2
|2(-3)| + 3 = -3 9=-3 ?
September 18, 2010

Algebra 2
Is it possible to solve |2x| + 3 =x? I got x= -3, but it doesn't seem to work when you plug it into the original equation to check it..
September 18, 2010

french
Isn't the feminine form without the s, like noire?
September 18, 2010

Algebra II
What's the solution for -5 < 1 - 2k < 3? Is it 3 > k >-1 or is it -1 < k < 3? I'm not sure if you have to switch the order of the numbers also when you're dividing it by a negative number..
September 15, 2010

calculus
Find the limit if it exists. The limit of (sqrt(x+1)-2)/(x-3) as x tends to 3. The limit of (sqrt(x+5)-sqrt(5))/x as x tends to 0
September 12, 2010

Physics
kg for the 4 x 10^-26
September 10, 2010

Physics
How many uranium atoms are there in 8.4 g of pure uranium? The mass of one uranium atom is 4 x 10^-26
September 10, 2010

Math - factoring
Solve by factoring: 1.) x^2 - x - 12 = 0
September 9, 2010

Geometry
A wooden board is placed so that it leans against a loading dock to provide a ramp. The board is supported by a metal beam perpendicular to the ramp and placed on a 1 ft. tall support. The bottom of the support is 9 feet from the point where the ramp meets the ground. The ...
September 9, 2010

algebra
if i had 8765.00 in my bank and i made 9006.04 in twelve months with out puting any money in the bank what is the intrest rate that i have
September 8, 2010

Biology
Which of the following is a polymer of an amino sugar? a.) cellulose b.) chitin c.) glycogen d.) starch
September 7, 2010

english
What are some colorful, playful phrases from Angela's Ashes by Frank McCourt like, "stuff his gob with toffee galore" " 'tis raining abroad, pelting out of the heavens" and "legless with the sherry". And please say in what chapters they are?
September 5, 2010

Math - Solving Graphically
1. 8 + 7x =2x² I used my calculator to graph this and got x is about 4.41 and -.904 2. 1/3x² - 15 = 0 Again, I graphed on my calculator and got x is about 6.70 and -6.70 Are these answers accurate and is there another way to solve?
September 1, 2010

psychology
How has early memory research concerning the growth of cognitive perspectives in psychology changed over the course of the 20th century?
August 28, 2010

Geometry
A wheel with a radius of 13 rolls along level ground and makes 4 1/2 revolutions per second. Assuming the circumference to be 3.1416 times the diameter, how far does the wheel travel in 8 seconds?
August 23, 2010

chemistry
HAHAHA THAT IS SO EASY HAHAHA
August 15, 2010

Physics
The flywheel of a steam engine runs with a constant angular speed of 321 rev/min (in the counterclockwise direction). When steam is shut off, the friction of the bearings stops the wheel in 1.9 h. (a) What is the constant angular acceleration, in revolutions per minute-squared...
July 27, 2010

math
The winning time int he womens Olympic 200 meter dash w is a function of the year x in which the event was run, starting with 1948 and is given by the equation w= f(X)= -0.0661X+152.8 A. PREDICT THE WINNING TIME FOR THE 1988 OLYMPICS. ( THE ACTUAL TIME WAS 21.34 SECONDS) B. ...
July 26, 2010

Finance
Bond X is a premium bond making annual payments. The bond pays an 8 percent coupon, has a YTM of 6 percent, and has 13 years to maturity. Bond Y is a discount bond making annual payments. This bond pays a 6 percent coupon, has a YTM of 8 percent, and also has 13 years to ...
July 23, 2010

Physics-Gravity
A 17.0-kg satellite has a circular orbit with a period of 2.31 h and a radius of 9.10×106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 8.10 m/s2, what is the radius of the planet?
July 17, 2010

Physics-Gravity
then how do i get the altitude after i solve for r subtract the radius of pluto?
July 17, 2010

Physics-Gravity
A orbiting satellite stays over a certain spot on the equator of (rotating) Pluto. What is the altitude of the orbit (called a "synchronous orbit")? Do I use T^2=4pi^2/GM x r^3?
July 17, 2010

PSYCHOLOGY
A. some undiscovered third variable that is independent of nature and nurture has the largest influence on development
July 17, 2010

Math
If 7y+9 represents an odd integer, which of the following represents the next smallest odd integer? a. 7(y-2)+1 b. 7(y-2) c. 7(y+3) d. 7(y+2) e. 7(y+1)
July 6, 2010

MATH
IF XYZ AUTO CO SOLD 23,000 VEHICLES IN 1999, HOW MANY WERE SUV'S? IF 7,650 TRUCKS WERE SOLD IN 1999,HOW MANY TOTAL VEHICLES WERE SOLD IN 1999? IF 3,750 2-DR CARS WERE SOLD IN 1999, THEN HOW MANY 4-DR CARS WERE SOLD IN 1999? THE FOLLOWING INFO APPEARED IN A PIE CHART - 4-DR...
July 6, 2010

English
When a character has an aside, he or she is speaking dirextly to another character. True or False? I know that aside is something a character says to either the audience or another character, which the rest of those on stage are not supposed to hear. So is it False? Just ...
July 3, 2010

Chemistry
also, the Molarity of EDTA was determined to be .0404
July 1, 2010

Chemistry
Hello, we recently did a lab in our chemistry class to analyze an Unknown amount Calcium Carbonate which was titrated with EDTA. Our titration results were: mass of the unknown CaCO3 was 0.172 g and the mL of EDTA added was 30.7. How do I find the percent mass of Ca?
July 1, 2010

physics
A bothersome feature of many physical measurements is the presence of a background signal (commonly called "noise"). In Part 2.2.4 of the experiment, some light that reflects off the apparatus or from neighboring stations strikes the photometer even when the direct ...
June 29, 2010

English
1. Reviewing word choice is a good strategy for the Proofreading phase of the Writing Process. True or False? I think it is False as reviewing word choice should be in the revision phase, right? 2. It is easier to determine the form of one's writing if the purpose of ...
June 27, 2010

communication
Repeating in your own words the verbal content of the critic's message is: paraphrasing. checking for feelings. checking for inferences. buying time with limited agreement.
June 24, 2010

communication
The emphasis given to one or more words in a sentence is: volume. stress. pitch. tone of voice.
June 24, 2010

communication
Which of the following is a characteristic of communication in high-context cultures? Written agreements are binding. There is reliance on nonverbal signs to communicate. Oral agreements are not binding. There is a preference for direct communication.
June 24, 2010

literature
i need to know all of the syllables in words
June 14, 2010

math/Probability
what is the probability of rolling a sum that exceeds 4 with two dice
June 11, 2010

algebra1
actualy you can factor out 2
June 7, 2010

ss
how did supporters of andrew jackson try to make the political system more democratic
June 3, 2010

Science
What evidence indicates that there is competition taking place among the plants in a natural setting? How do limiting factors play a role in the extinction of a population? How important are the decomposer's in a biological community? How do plants obtain N they need where...
June 2, 2010

Chemistry
Why is the final temperature of the metal and water mixture closer to the initial temperature of the water than the initial temperature of the metal
June 2, 2010

Chemistry
Why is the final temperature of the metal and water mixture closer to the initial temperature of the water than the initial temperature of the metal
June 2, 2010

Chemistry
Why is the final temperature of the metal and water mixture closer to the initial temperature of the water than the initial temperature of the metal
June 2, 2010

English
Can you help me remove the "to be" verbs in this sentence? I need to take out the are, have been, and to be some how. Some of the characters in the book are no exception and they have been brought up since birth to be very reserved.
June 1, 2010

Math/Probability
What is the probability of rolling a sum that exceeds four with two dice
May 31, 2010

management
Think of a recently completed group project that you have been involved in. This project may have been a student project, a group project, or an extracurricular project. Briefly describe the situation and choose one of the following to post on the discussion board: Analyze the...
May 22, 2010

marketing
Develop a pricing strategy for your chosen product/service. Discuss what factors will impact your pricing strategy. What pricing method would you use for your product/service and why? These two questions require research using the textbook (Chapter 9). No other resources are ...
May 22, 2010

math
If corn is 12% protein and weighs 56 pounds per bushel, and soybeans are 44% protein and weigh 60 pounds per bushel, what respective combinations of corn and soybean yields per acre produce about the same amount of protein.
May 18, 2010

math
the parameter of a rectangular placemat is 72 in. the length is 4 in. find the with and the length
May 12, 2010

chemistry
for Fe + V2O3 -----> Fe2O3 + VO write the two half reactions and calculate voltage
May 12, 2010

psy
just want to know if i am in the right direction make example sentence for praticing generalization, discrimination, extinctiom, spontaneous recovery, positive reinforcement, negative reinforcement, punishment generalization 1.John was frightened by a barking lunging spaie. ...
May 11, 2010

Chemistry
What is the molar mass of a solute if 62 g of the solute in 125 g of water produce a 5.3 molal solution?
May 10, 2010

basic psy
example of classical conditioning acquisition, extinction, spontaneous recovery
May 5, 2010

basic psy
classical conditioning examples of us - the clicking of the gun ur - running away cs - gun shoots cr - the running away from the clicking of the gun are theses correct examples
May 5, 2010

Environmental Science
If you want more information you cold go on to google and type in "Coral reefs powerpoint" Then click on the eighth site on that first page. It gives good dteailed points about what you may be looking for. P.S all the best on ur research paper
May 4, 2010

chemistry
Sodium chloride is decomposed into the elements sodium and chlorine by means of electrical energy. How many grams of chlorine gas can be obtained from 2.50 mol NaCl?
May 4, 2010

College Health
Two short advices, instead of Putting College Health as your subject, just leave it as Health, or Important Health; something like that. My other advice is don't insert 29 long questions on one whole post; people probably get tired skimming through it. Do around six ...
May 3, 2010

Chemistry
95.4g/mol
May 3, 2010

Chemistry
An element crystallizes in a body-centered cubic lattice. The edge of the unit cell is 3.5 Angstrom, and the density of the crystal is 7.39g/cm^3. Calculate the atomic weight of the element. A= ? g/mol
May 3, 2010

english
This is an inventor and his/her invention.cyrusmccormickreaper
May 3, 2010

english
I need five animals out of this.geornniebsclkmroteclaoy
May 3, 2010

Physics
An athlete twirls a 1 kg hammer tied to the end of a 1.3 m rope in a horizontal circle the hammer moves at the rate of 1.0 rev/sec. (a)what is the centripetal acceleration of the hammer? (b) what is the tension in the rope?
May 3, 2010

12th grade Project work
You could use ribbons, glitter, and all those other crafts. You could just look up on the internet for lists of them.
May 3, 2010

spanish
From how I can translate it it reads, "you like my dog heat".
May 2, 2010

English
Here is a quote on inner beauty. You will probably be able to pick out some deep details from here: "Beauty is how you feel inside, and it reflects in your eyes. It is not something physical."
May 2, 2010

Chemistry
How many mL of 18 M H2SO4 are required to react with 250 mL of 2.50 M Al(OH)3 if the products are aluminum sulfate and water? How do i solve this?
April 30, 2010

7th grade
You could read throught the notes you have taken in class, and refer to the teext for extra bits of information. Cornell notes can be helpful as well. I suggest you go on to google, and type in : cornell note taking method After typing that in, click on the second site. You ...
April 29, 2010

English
Hey Franco, What's up? 1) It would make more sense with has. He is been, does not make sense. You could write it as He is guilt-ridden.... It makes more sense with has, so just take the is out, and that sentence will be perfect 2) There are numerous ways to say this ...
April 29, 2010

Com 220
How would I compose a full sentence outline on same sex marrige using this thesis: The controversy around same sex marriage is centered in religious or moral convention.Please help an example would be nice. I really do not know where to start.
April 29, 2010

chemistry-check my work
for each of the following pairs, determine which acid is the stronger acid. A. H2S, HS- B. H2SO3, H2SeO3 C. HBr, H2Se D. HIO4, HIO3 E. H2S, H2O a. H2S b. H2SO3 c. HBr d. HIO3 e. H2S
April 28, 2010

grammar
i need the 5 sentences
April 28, 2010

grammar
• Write five sentences about the role of education in successful financial planning, in which you correctly use a different verb tense in each sentence. • Mark each verb used in bold and, in parentheses, identify the specific tense used.
April 28, 2010

chemistry
What are the concentrations of [H+] and [OH-] in each of the following. Determine the pH and pOH for each solution. A. 1.25 M HCl B. 0.25 M NaOH C. 0.035 M Ca(OH)2 D. 0.50 M HNO3 I know how to do the pH and pOH I just do not know how to figure out the both concentrations.
April 28, 2010

chemistry
okay, can the ph go over 14? 5.80/40=1.45 -log(1.45)= -0.16 14-^-0.16= 14.16 i must be doing something wrong
April 28, 2010

chemistry
a 1.00 L aqueous solution contained 5.80 g of NaOH. what is the pH of the solution? Can someone help me out with the setup of this?
April 28, 2010

For Franco
Hey, here are your other answers 1) She is wearing a long-sleeved cotton polo shirt with a slogan in the front and one in the back. change your ending to: with a slogan on the front and back 2) How do you call a T-shirt with a collar that is half buttoned-up? Do you mean: What...
April 27, 2010

English
Sorry for #7 it is good to be specific, so you should say what she's actually wearing on her eyes. Like mascara, eyeshadow. You could just say she has some eye makeup on.
April 27, 2010

English
You don't have to be really specific on evry number You could just say he's wearing....(Number one looks good) For number 2 you say that he is wearing a "long sleeved cotton polo" You cold just say he is wearing a long sleeved cotton polo shirt. Don't ...
April 27, 2010

physiology
Which of the following is TRUE regarding the small intestine? The small intestine secretes roughly the same volume of fluid as it absorbs Segmentation is responsible for mixing the chyme and bringing it in contact with the intestinal wall for absorption The most common form of...
April 26, 2010

physiology
Which of the following statements is TRUE regarding bile? Bile is produced by the gall bladder, and secreted into the duodenum Bile is produced and secreted in response to CCK, which is in turn secreted primarily in response to high acidity of duodenal chyme Bile is most ...
April 26, 2010

physiology
Is the following statement True or False, and Why? The presence of a hyperosmotic solution in the duodenum will stimulate gastric emptying. True; this helps to speed up the absorption process True; the hyperosmotic solution draws contents in from the stomach False; this causes...
April 26, 2010

physiology
Which of the following statements regarding pepsin is FALSE? Pepsin is derived from the inactive enzyme pepsinogen Pepsin primarily works to digest fatty acids Pepsinogen secretion is stimulated by increased protein concentration, gastric distension, and the sight/smell/taste...
April 26, 2010

physiology
Gastrin is a hormone secreted into the __________ by the ___________. Blood; stomach Lumen; stomach Lumen; pancreas Blood; small intestine
April 26, 2010

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