Saturday

December 10, 2016
Total # Posts: 2,360

**trig**

Verify the trigonometric identity: [(1–sin²x)/sin²x]–[(csc²x–1)/cos²x]= -tan²x I can't figure this out.

*January 23, 2010*

**physics**

Vector V1 is 6.4 units long and points along the negative x axis. Vector V2 is 8.9 units long and points at 60 degrees to the positive x axis 1) find x and y components of v1 and v2? 2) find magnitude of the sum v1+v2? 3) find the angle of the sum v1+v2? I found the answers to...

*January 20, 2010*

**calculus**

U-Substitution 1. 3x(sin^2((3x^2)+1)cos((3x^2)+1)dx 2. (x^3)(sqrt((3x^2)+1)) dx u = ((3x^2)+1) then?

*January 16, 2010*

**math**

isnt the area of a triangle .5bh?

*January 16, 2010*

**accounting**

try the termpapergurus..they do you homework for you at a very reasonable price..be sure to check them out

*January 14, 2010*

**math**

Thank You SO Much! :)

*January 12, 2010*

**math**

Which of the following are true of ordinary whole-life insurance policies? 1. The insured pays premiums on this type of insurance until his death. 2. Ordinary whole life insurance covers the insured for the states term of the policy. 3. The insured only has to pay on this type...

*January 12, 2010*

**math**

yeah i don't understand the wording but the diagram shows that each end of the entire rectangular pen is 2x

*December 23, 2009*

**math**

A farmer has 1000ft of fence and wishes to enclose the largest possible area that has four individual square pens bordered by a rectangular pen of a different width on each end. what are the overall dimensions of the fence area with maximum square footage? so far i thought i ...

*December 23, 2009*

**AP Government**

While political participation through voting in the US remains low compared to other democratic societies, Americans participate in their democracy in other ways. Explain.

*December 22, 2009*

**History of Science**

The one about Pascal's Law just gives sites about what it is, and its applications, not what Pascal himself did to discover it, which is what I need.

*December 13, 2009*

**History of Science**

Hey, Im doing a paper on Pascal's work in physics, but most of the sites that google gives me concern mostly about his religious life and only briefly talk about his scientific accomplishments. I need help finding a site that gives in depth detail of his experiments with ...

*December 13, 2009*

**Math **

match the word with the definition: (A)Personal exemptions (B)Adjustments (C)Tax credits (D)Itemized deductions (1) The amount you may be able to deduct from your adjusted gross income based on how you spent your money during the year. (2) A set amount subracted from your ...

*December 10, 2009*

**Math **

match the word with the definition: (A)Personal exemptions (B)Adjustments (C)Tax credits (D)Itemized deductions (1) The amount you may be able to deduct from your adjested gross income based on how you spent your money during the year. (2) A set amount subracted from your ...

*December 10, 2009*

**Math **

an eight character password must be six letters of the alphabet (not case-sensitive) followed by a two digit number. how many different addresses of this kind are possible

*December 9, 2009*

**Algebra**

Thank you ALan. I will copy the formual to use for another time!

*December 7, 2009*

**Algebra**

Find the slope of the line containing the points (-9, 1/2) and (-5, 1/2)

*December 7, 2009*

**Chem**

Do my answers look correct for these? Thanks Calculate the mass percent of a solution containing 45.6 grams ethanol (C2H6O) in 245 grams of water. 15.7% You are asked to make 500.0 mL of a 4.5M solution of HCl, but the only HCl you have available to dilute is 18.0M. Describe ...

*December 7, 2009*

**Honors Chemistry 101**

Do my answers look correct for these? Thanks Calculate the mass percent of a solution containing 45.6 grams ethanol (C2H6O) in 245 grams of water. 15.7% You are asked to make 500.0 mL of a 4.5M solution of HCl, but the only HCl you have available to dilute is 18.0M. Describe ...

*December 7, 2009*

**Algebra**

write an inequality that expresses when you would use a 20% off coupon for $5 off when you spend $20 or more.

*December 2, 2009*

**Algebra**

The formula R= -0.75t +385 can be used to predict the world record in the 1500-m run t years after 1930. Determine (in terms of an inequality) those years for which the world record will be less than 3.7 min. Solve for t

*November 30, 2009*

**Algebra**

cIc<1020.28 Thanks!

*November 30, 2009*

**Algebra**

A metal stays solid at Fahrenheit temp below 1868.5 Determine (in terms of an inequality) those Celsisu temp, for which the metal stays solid. Use the formula F=9/5c+32

*November 30, 2009*

**Algebra**

Thank you Ms. Sue.

*November 27, 2009*

**Algebra**

A mt. with the base 11,554 feet below sea level rises 18,403 feet. What is the elevation above sea level of its peak? What is the elevation of the mt's peak?

*November 27, 2009*

**math**

Marcus and Allen are playing Rock/Paper/Scissors. The first one to win 10 times does not have to do the dishes. The score is now 9 to 7 in favor of Marcus. If ties are ignored and not counted, what is the probabilty Marcus will not have to do the dishes?

*November 19, 2009*

**math- odds**

thanks that helps!

*November 13, 2009*

**math- odds**

A bag contains 13 balls numbered 1 through 13. What are the odds in favor of selecting a ball that has an even number? Explain why?

*November 13, 2009*

**geometry**

Cool, thanks!

*November 12, 2009*

**geometry**

Two corresponding sides of similar polygons are in the ratio of 2 : 7. If the area of the smaller figure is 8 square meters, what is the area of the larger figure?

*November 12, 2009*

**Calculus**

Sketch the graph of a function that is continuous at x=5 but not differentiable at x=5.

*November 10, 2009*

**calculus**

sin(tan^-1(-7/3)) How do i evaluate this? answer has to be exact with no decimals.. calculators not allowed either..

*November 10, 2009*

**calculus**

I need to find the critical number of 4x^3-36x^2+96x-64 by factoring. Basically I need to know the zeros.

*November 9, 2009*

**Masters Cybersecurity**

a) Draw the bits for the four octets of the IP address of the first host on the first subnet. 10000000.10101011.00000000.00000001 b) Convert this answer into dotted decimal notation. 128.171.0.1 c) Draw the bits for the second host on the third subnet. 10000000.10101011....

*November 7, 2009*

**math**

25-7×2÷4+2

*November 2, 2009*

**11th grade**

The price of a sweater is $5 less than teice the price of a shirt. if four sweaters and three shirts cost $200, find the price of each shirt and each sweater.

*October 28, 2009*

**Algebra**

State whether each equation represents a linear, quadratic, or exponential function. Tell how you decided. 1. y = 9^3x + 4 2. 4x = 5 - y 3. y = 2x^2 + 23 – 14x

*October 26, 2009*

**Grammar and Composition**

Pittance is a noun, not an adjective

*October 25, 2009*

**science**

we need help finding the plant life cycle.

*October 21, 2009*

**Science**

15 ways Radio waves are used in a neighborhood?

*October 20, 2009*

**PSY210 APPENDIX G**

According to Sternberg, a person can experience eight general types of love. In the following table, a type of love as identified by Sternberg is in the left column. In the center column, write the combination of components that type of love demonstrates (intimacy, passion, or...

*October 19, 2009*

**Physics**

When you lift a ball with a force of 82N, the ball accelerates upward with an acceleration of a. If you lift with a force of 92N, the balls acceleration is 2*a. Find the weight of the ball, and the acceleration a. I know that 82 = ma +mg 92 = m2a + mg That logic is correct ...

*October 18, 2009*

**Biology**

Can proteins like GFP slow transcription of other essential cellular proteins?

*October 16, 2009*

**Statistics**

What is the probability of drawing an ace and a 10, Jack, Queen, or King from a deck of cards?

*October 15, 2009*

**3rd grade**

What is the least and greatest original numbers of 460 by Tens

*October 13, 2009*

**Math**

A quadrilateral is a ____ if and only if one pair of opposite sides are parallel and the other pair of opposite sides are congruent. Choices: Kite, Parallelogram, Rhombus, Square, or rectangle

*October 12, 2009*

**Math**

Two cards are drawn without replacement from an ordinary deck of 52 playing cards. What are the odds against drawing a club and a diamond?

*October 12, 2009*

**Math**

Three points D, E, and F are collinear. Is there only one plane that contains these three points?

*October 12, 2009*

**Math**

In a certain lottery, five different numbers between 1 and 30 inclusive are drawn. These are the winning numbers. To win the lottery, a person must select the correct 5 numbers in the same order in which they were drawn. What is the probability of winning?

*October 11, 2009*

**Math**

Two cards are drawn without replacement from an ordinary deck of 52 playing cards. What are the odds against drawing a club and a diamond?

*October 11, 2009*

**Science**

Can anyone fill in the blank? An idea that explains the characteristics of living things? (2 words, 10 letters) Type of cell that helps an animal respond to its environment (5 letters) Plants have different types of cells for different _______. (5 letters)

*October 7, 2009*

**english grade 6**

what is a double consonant?

*October 6, 2009*

**math**

the m's cancel at some point in the equation

*October 2, 2009*

**math**

Consider a disk and spinner with four equal sectors marked with the numerals 1, 2, 3, and 4. What is the expected value for a single spin? If the spinner is spun three times, what is the expected value for the sum of the three numbers spun?

*September 29, 2009*

**math**

The FunTime Amusement park customer load during the summer follows a normal distribution with mean 450 and standard deviation 80. Determine the probability that the number of customers on any given day during the summer will be less than 420.

*September 29, 2009*

**math**

Please help me on this calculus question. I am getting the wrong diff. equation and so my answers to the remaining parts are wrong. ---------------------- A thermometer reading 85 degress outside is brought into a room with a constant temperature of 72 degrees. The rate of ...

*September 29, 2009*

**math**

Great! I finally get it! Thank you...

*September 28, 2009*

**math**

Can you please tell me if I did this right? Or am I way off: What are the odds in favor of getting at a head and a tail in a single toss of two coins? HH TT HT TH 2/4=1/2= 2:1

*September 28, 2009*

**Sociology- Modern Iran**

thanks. Oh and I'm having to a hard time figuring out what the Tehran Spring. I don't know if its the entire reform movement, or just the series of protests that occurred over the 2009 presidential election

*September 27, 2009*

**Sociology- Modern Iran**

I'm doing a presentation on how the youth in Iran respond to the laws and regulations of the Islamic Theocratic regime. However, Im having trouble finding good sources, especially about specific social injustices that are occurring, like what can't they do. So if you ...

*September 27, 2009*

**Math**

Identify the misuse or misrepresentation of statistics: “60% of all college students watch less than 2 hours of television per day.” This conclusion was reached by a college student after she had questioned 520 randomly selected students exiting the library. What is ...

*September 27, 2009*

**Math**

Cool. Thanks for the help!

*September 27, 2009*

**Physics**

We consider a man of mass m = 84 kg as shown in the figure below using crutches. The crutches each make an angle of θ = 26degrees with the vertical. Half of the person's weight is supported by the crutches, the other half is supported by the normal forces acting on ...

*September 26, 2009*

**College Physics**

Box M2 sits atop M1. (M1=25kg M2=15kg). The coefficient of friction between boxes and between M1 and the ground is Uk=.4 and Us=.5. I found that 353N is the maximum force you can apply to box 1 so that box 2 doesn't slip off. Now it asks for the acceleration of M1 and M2 ...

*September 24, 2009*

**Accounting**

Just take the $5,000 and multiply it by the remaining months. April-December is 9 months so subtract that from 24 to get 15. (5,000*15/24) which should equal 3,125.

*September 17, 2009*

**history**

I have already been to this site and I cannot find an answer to this question.

*September 13, 2009*

**History**

What was the United State's roll in the Mexican Independence?

*September 13, 2009*

**Math 156**

Thank you!

*September 5, 2009*

**Math 156**

On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 32 questions correct. What was the percent of increase?

*September 5, 2009*

**English**

I need a character summery of Bella from Twilight. I haven't read the book, don't have time to. quick little things about her really. thanks,

*September 1, 2009*

**grammar**

In the sentence below is the verb divided transitive or intransitive. We divided the rest of the cake among us.

*August 18, 2009*

**geometry**

what would be the next sequence in george, thomas, abe, alexander,...and why

*August 17, 2009*

**American Democracy**

Its D

*August 11, 2009*

**Maths**

Prove that a number 10^(3n+1) , where n is a positive integer, cannot be represented as the sum of two cubes of positive integers. thanx

*July 15, 2009*

**Economics**

Diminishing return is the stage of production which the increase in input should be stopped. But even in this stage, the employer can still hire a new person if the value of marginal product is above the wage rate. The rule is that P x MP= input price. If the wage rate ...

*July 6, 2009*

**physics- response to bobpursley**

which is false? Consider the following processes: I. Energy flows as heat from a hot object to a colder object II. Work is done on a system and an equivalent amount of energy is rejected as heat by the system III. Energy is absorbed as heat by a system and an equivalent amount...

*June 24, 2009*

**physics**

which is false? Consider the following processes: I. Energy flows as heat from a hot object to a colder object II. Work is done on a system and an equivalent amount of energy is rejected as heat by the system III. Energy is absorbed as heat by a system and an equivalent amount...

*June 24, 2009*

**chemistry**

The heat capacity of object B is twice that of object A. Initially A is at 300 K and B is at 450 K. They are placed in thermal contact and the combination is isolated. The final temperature of both objects is:

*June 22, 2009*

**science**

thank you very much for your help!! :) <3 <3

*June 17, 2009*

**science**

1) what is the mass of 10 cc of water? 2) why does a block of wood float on water? 3)how and why can density by used to identify an unknown substance? 4) describe the relationship between density, water, an d things that float please help me just need these answers to study ...

*June 17, 2009*

**trig**

It's in sigma notation, so I'm not sure how to type it. I'll just use E lol. Find each sum. 6 E (n+1)/(n+2) n=1 Is this a geometric or arithmetic series? That is pretty much all I really need to know. I appreciate all the help you guys give.

*June 16, 2009*

**trig**

I have no idea how to solve this problem. <A is in standard position on a unit circle. Point P (-1/2, -√3/2) is the point of intersection of its terminal side with the unit circle. Find the measure of <A in radians.

*June 10, 2009*

**accounting**

P 4-6 "University Physician Compensation"
Physicians practicing in eastern University's hospital have the following compensation agreement. Each doctor bills the patient (or Blue Cross Blue Shield) for his or her services. The doctor pays for all ...

*June 10, 2009*

**accounting**

House mortgage You have just purchased a house and have obtained a 30-year, $200,000 mortgage with an interest rate of 10 percent. Required: a. what is your annual payment? b. Assuming you bought the house on Jan. 1st, what is the principle balance after one year? c. After ...

*June 10, 2009*

**accounting**

Mr. Jones intends to retire in 20 years at the age of 65. As yet he has not provided for retirement income, and he wants to set up a periodic savings plan to do this. If he makes equal annual payments into a savings account that pays 4 percent interest per year, how large ...

*June 10, 2009*

**Science**

give 3 examples of pure science vs applied science

*June 7, 2009*

**earth science**

what is the greatest danger from volcanoes?? a. watery lava b. mud flows c. oxygen d. bulging of the earth's crust

*June 6, 2009*

**civics I**

once a bill is passed by congress and signed into law by the president can it be changed?

*June 2, 2009*

**Language Arts**

Lumberjack Beds now starts with a B. 6 letters long. 3rd letter is L and 5th letter is K. Last letter is probably S. Help?

*June 1, 2009*

**Language Arts**

Figured out who Helped the Cook = Choreboys, Now all I need is Lumberjack beds. Help?

*June 1, 2009*

**Language Arts**

Helped the Cook - 9 Letters, begins with C and ends in YS. Lumberjack Beds - 6 letters, 3rd letter is L and 5th letter is K, Maybe?

*June 1, 2009*

**Language Arts**

Need Help with a Camp Crossword Puzzle. Need to know Another word for Lumberjack Beds and Another word for Who Helped the Cook?

*June 1, 2009*

**trig**

I need to know how to graph y = sin 2(x - Pi/3) I need to have: Amplitude Period Phase Shift 5 critical points Help would be appreciated. Thanks.

*May 28, 2009*

**Chemistry**

The age of a rock can be estimated by measuring the amount of 40Ar trapped inside. The calculation is based on the fact that 40K decays to 40Ar by a first-order process. It also assumes that none of the 40Ar produced by the reaction has escaped from the rock since it was ...

*May 21, 2009*

**trigonometry**

It all makes sense now!!!! Thanks, haha.

*May 19, 2009*

**trigonometry**

But how do I know where cosine (or tangent and sine) are positive? I don't understand. Thanks for the help, btw.

*May 19, 2009*

**trigonometry**

Sorry, my mistake. It is arccos, not arcsin. Also, the negative in the book is exactly in the middle. The book just says evaluate the expression.

*May 19, 2009*

**trigonometry**

Evaluate the expression. arcsin (-1/2) Is there a rule I am missing? How do I know which quadrant the triangle belongs in? That is the only thing that is stopping me. Much help appreciated.

*May 19, 2009*

**Algebra**

y = (x - 4)^2-2

*May 14, 2009*

**Calculus**

Find the equation of the tangent line to the curve 2e^(xy) = x + y at (0,2)

*May 14, 2009*