Thursday

April 24, 2014

April 24, 2014

Total # Posts: 1,884

**calc**

Thats what I got whenever I simplified it

**calc**

Find the derivatives of the following functions using the differentiation rules. f(x)=(x^3-2x^2+x+1)(sqrt(x)-3x+9) I did: f'(x)=[x^3-2x^2+x+1][(1/2x^(-1/2)-3]+[x^(1/2)-3x+9][3x^2-4x+1] which I got to be [-12x^3+(7/2)x^(5/2)+46x^2-5x^(3/2)-42x+(3/2)x^(1/2)+6]/[2x^(1/2)] I j...

**Algebra 2**

How do you factor u^2 - v^2 + 2v + 1?

**Geometry**

I have this much so far (1+x)/9 = 2/5 or x = 13/5 = 2.6 ft I am unsure of how to work out the rest of the problem. 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...

**Geometry**

PLEASE! Someone help me with 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 w...

**english**

read the following sentences and underline each word or phrase that signals a comparison or contast clue. circle comparison or contrast, depending on the clue. then write the meaning os each italicized word. 1.) We thought we were seeing the real painting, but it turned out to...

**PHYSICS**

Taylor Swift leaves Philadelphia for a concert in Dallas. Kellie Pickler leaves at the same time, but in a different tour bus. After 2 hours, Taylor's bus has traveled 50% further than Kellie's bus. If Taylor's bus is going 30mph faster than kellies's bus, how ...

**PHYSICS**

Thank you

**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?

**Algebra**

you're welcome!

**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 squ...

**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?

**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

**algegra**

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

**biology**

energy that is lost at each trophic level of an ecosystem is replenished by????

**calculus**

how did you get all of those x's with exponents?

**calculus**

sorry i should have put lim tan(x)/x

**calculus**

I broke that down into the lim of sinx/(xcosx)

**calculus**

lim as x approaches 0 of tanx/x

**Calculus**

no its a 2.

**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.

**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 ...

**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. Her...

**Algebra 2**

thanks

**Algebra 2**

Is the solution to 0 ≤ |4u - 7| u ≥ 7/4?

**Algebra 2**

-(y+3) = 2y - 5 -y-3 = 2y-5 -3y = -2 y = 2/3 Is this how to solve the equation?

**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?

**Algebra 2**

thanks

**Algebra 2**

|2(-3)| + 3 = -3 9=-3 ?

**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..

**french**

Isn't the feminine form without the s, like noire?

**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..

**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

**Physics**

kg for the 4 x 10^-26

**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

**Math - factoring**

Solve by factoring: 1.) x^2 - x - 12 = 0

**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 slop...

**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

**Biology**

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

**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?

**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?

**psychology**

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

**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?

**chemistry**

HAHAHA THAT IS SO EASY HAHAHA

**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...

**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. FI...

**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 matur...

**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?

**Physics-Gravity**

then how do i get the altitude after i solve for r subtract the radius of pluto?

**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?

**PSYCHOLOGY**

A. some undiscovered third variable that is independent of nature and nurture has the largest influence on development

**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)

**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...

**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 check...

**Chemistry**

also, the Molarity of EDTA was determined to be .0404

**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?

**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 b...

**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 writi...

**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.

**communication**

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

**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.

**literature**

i need to know all of the syllables in words

**math/Probability**

what is the probability of rolling a sum that exceeds 4 with two dice

**algebra1**

actualy you can factor out 2

**ss**

how did supporters of andrew jackson try to make the political system more democratic

**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...

**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

**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

**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

**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.

**Math/Probability**

What is the probability of rolling a sum that exceeds four with two dice

**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...

**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 r...

**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.

**math**

the parameter of a rectangular placemat is 72 in. the length is 4 in. find the with and the length

**chemistry**

for Fe + V2O3 -----> Fe2O3 + VO write the two half reactions and calculate voltage

**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. No...

**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?

**basic psy**

example of classical conditioning acquisition, extinction, spontaneous recovery

**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

**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

**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?

**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 questi...

**Chemistry**

95.4g/mol

**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

**english**

This is an inventor and his/her invention.cyrusmccormickreaper

**english**

I need five animals out of this.geornniebsclkmroteclaoy

**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?

**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.

**spanish**

From how I can translate it it reads, "you like my dog heat".

**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."

**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?

**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 co...

**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 senten...

**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.

**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

**grammar**

i need the 5 sentences

**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.

**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.

**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

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