Sunday

February 7, 2016
Total # Posts: 2,096

**Linear Algebra**

True/False question Suppose that A is a 2 x 3 matrix such that A[1, 1, 1]^t = [2, 3]^t = A[2, 3, 4]^t. Then [1, 2, 3]^t belongs to the nullspace of A. I have no idea how to start this question/what it means.
*February 6, 2016*

**science**

please help!!
*February 4, 2016*

**science**

Some constellations, such as Ursa Minor, are visible in the sky year-round; other constellations appear for only part of the year. Explain why this happens. Please help this is my last question and it truly stumped! It'd mean the world if someone could explain this to me. ...
*February 4, 2016*

**Calc II**

Find the volume of the solid generated by rotating the region of the x-y plane between the line y=6, the curve y=3sin(x)+3 for -pi/2 < (or equal to) x < (or equal to) 5pi/2 about the line y = 6.
*February 2, 2016*

**Chemistry**

how do i figure out the moles of H2? Do I convert the mL to L and then divide that by the mass of H2?
*January 31, 2016*

**Chemistry**

Calculate the mass of Mg needed to produce ~40 mL of H2. how do I do this?
*January 31, 2016*

**Algebra 1**

A contestant on a quiz show gets 50 points for every correct answer and loses 100 points for each incorrect answer. After answering 24 questions, the contestant has 300 points. How many questions has the contestant answered correctly? Incorrectly?
*January 30, 2016*

**Mathematics**

The first three terms of a geometric sequence are: T1; T2; and T3. If T2 = T1 + 4 and T3 = T2 + 9, determine the values of T1; T2 and T3
*January 30, 2016*

**Algebra 1 - 9th Grade**

A contestant on a quiz show gets 50 points for every correct answer and loses 100 points for each incorrect answer. After answering 24 questions, the contestant has 300 points. How many questions has the contestant answered correctly? Incorrectly?
*January 29, 2016*

**Calc II**

Find the function y = y(x) which solves the initial value problem: 4sec(x)*dy/dx = e^(y+sin(x)) where y(0) = -5
*January 28, 2016*

**English**

What is the secret to reaching someone with words? Which of the poems—"Concrete Mixers," "The City Is So Big," or "Harlem Night Song"—best uses words to create a vision or an idea of the city for you? In a paragraph, state your opinion ...
*January 26, 2016*

**History**

Hebrew symbol for l: symbol for pi basically Kanarda symbol for o: basically a curved w with a tail on the left Hindi : voiceless breath
*January 25, 2016*

**Algebra**

The quadratic function f is negative only on the open interval (−2, 1 4 ) and its graph passes through the point (−1, −5). Determine the coefficients of f and sketch its graph.
*January 25, 2016*

**Algebra**

The quadratic function f is negative only on the open interval (−2, 1 4 ) and its graph passes through the point (−1, −5). Determine the coefficients of f and sketch its graph.
*January 25, 2016*

**Calc II**

Write a simpler expression for z = ln(4x^4 + 11x^3) + ln(1/5x^3) which does not involve any powers on x which are bigger than 1. I have no idea how to simplify the first natural log since it has two x values with exponents.
*January 24, 2016*

**tourism, maths literacy, business studies and econ**

accounting, econ
*January 24, 2016*

**Spanish**

its A
*January 24, 2016*

**Financial Math**

Emily borrows 20,000 for 8 years at a nominal discount rate of 6% compounded quarterly. Calculate the amount of discount that Emily will pay.
*January 24, 2016*

**Financial Math**

You have $100 and could use it to buy 80 songs from itunes. Instead, you invest your $100 at an annual effective interest rate of 11.3% for 4 years. The price of songs on itunes is subject to an annual effective rate of inflation of r%. At the end of 4 years, you can buy 101 ...
*January 24, 2016*

**Algebra 2 pt 2**

I need help making a table 3. One of the fireworks is launched from the top of a 70ft tall building with an initial upward velocity of 150 ft/sec. a. What is the equation for this situation? g=-32ft/s^2 b. When will the firework land if it does not explode? 9.28 seconds c. ...
*January 22, 2016*

**Maths lit.Economics.Business.Accounting.English.Afrikaans.**

yeeeeessssssss
*January 21, 2016*

**College Calc**

A train travels from city A to city B and then to city C. The distance from A to B is 220 miles and the distance from B to C is 87.5 miles. The average speed from A to B was 55 miles per hour, and the average speed from B to C was 35 mph. What was the average speed from A to C...
*January 21, 2016*

**math**

write a translation rule that maps point D (7, -3) onto point D'(2,5)
*January 20, 2016*

**Math**

Thomas needs to cut a piece of wood for a model airplane he is builing. He has four peices of wood: 5 ft, 4 ft, 6 ft, 3 ft long. If the length of wood he needs to cut √11 ft long, which peice of wood should be cut to have the least amount of unused wood.
*January 20, 2016*

**Honors Algebra 2**

Write an equation in standard form of the parabola that has the characteristics below. Vertex at (1,-8); passing through the point (3,12) So I started the problem and now I'm stuck as of what to do next. Y=a(x-h)+k 12=a(3-1)^2-8 12=a(2)^2-8 12=4a-8 4=4a 1=a
*January 19, 2016*

**Social studies**

B, sorry
*January 19, 2016*

**physics**

Light year is a unit of time.
*January 14, 2016*

**Science**

Certain seismic waves travel as.. A) electromagnetic and transverse waves. B) visible light and longitudinal waves. C) longitudinal and transverse waves. D) compression and visible light waves. I have no idea I never learned this:(
*January 14, 2016*

**Science**

When the energy of a light wave is transferred to a particle and causes it to vibrate and generate heat, the energy of the light wave is.. A) absorbed B) reflected C) refracted D) transmitted D?
*January 14, 2016*

**Language Arts**

Oh, right. Thank you, tutor Writeacher, for answering my question. Much appreciated~
*January 13, 2016*

**Language Arts**

Any time.
*January 13, 2016*

**Language Arts**

Thank you, tutor anon, for answering my question. Much appreciated~
*January 13, 2016*

**Language Arts**

I got the word calumniation when I looked in a thesaurus.
*January 13, 2016*

**Language Arts**

What is it the word (I think verb) when someone bluffs to make a story more interesting or believable? Thank you, tutors, for sparing your time to review my question.
*January 13, 2016*

**PHYSICS 1**

The vector signs are above each letter (I just don't know how to show it that way) A= 145 units @ 190 deg. B= 75 units @ 288 deg. C= 210 units @ 85 deg. D= 105 units @ 355 deg. How do I use the component Method with these given magnitude and degree??? Physics Component ...
*January 12, 2016*

**Algebra 2**

Changing my mind. It is D.
*January 12, 2016*

**Algebra 2**

A function is created to represent the amount of money in your checking account. What restrictions would be made to the domain? -The domain would include all real numbers.* -The domain would only include positive integers. -The domain would only include positive numbers. -The ...
*January 12, 2016*

**Social studies**

B C A 100%
*January 12, 2016*

**Algebra 2**

Thank you! You were correct!
*January 12, 2016*

**Algebra 2**

Perry can fill a sorter with oranges from the conveyer belt in 10 minutes. While Perry fills the sorter, Gillian takes oranges out of the sorter and puts them in shipping crates. With Gillian taking oranges out of the sorter, it takes 25 minutes for Perry to fill the sorter. ...
*January 12, 2016*

**STILL CONFUSED Physics Component Method**

Mr. Steve, could you do an example using A. for me. I am still confused as to how you actualy plug in the numbers. I am also confused on sine and cosine and tan.. Please show step by step. That'll help A lot!
*January 12, 2016*

**Physics Component Method**

The vector signs are above each letter (I just don't know how to show it that way) A= 145 units @ 190 deg. B= 75 units @ 288 deg. C= 210 units @ 85 deg. D= 105 units @ 355 deg. How do I use the component Method with these given magnitude and degree???
*January 12, 2016*

**physics**

1. A 12 kg wagon is being pulled at an angle of 38o above horizontal. What force is applied to the wagon if it accelerates from rest to a speed of 2.2 m/s over a distance of 3.4 m? (4 marks) 2. A 31.0 kg child on a swing reaches a maximum height of 1.92 m above their rest ...
*January 9, 2016*

**English I**

Which sentence is correct? The teacher: told the child's mother "Please be sure to dress Jackie warmly tomorrow." The teacher told the child's mother: "Please be sure to dress Jackie warmly tomorrow." The teacher told the child's mother "...
*January 8, 2016*

**Math**

If the markup is %50 and the selling price is $300, what is the initial price? Given answers: A $150 B $200 C $350 D $400 I asked help from my mother and she said the answer was A, $150, although from the formula R = C / ( 1 - G) (to calculate revenue R based on the cost C and...
*January 7, 2016*

**Algebra**

Thank you, tutor, Ms. Sue, for reviewing my problem, and questions! Also for helping me with my problem.
*January 6, 2016*

**Algebra**

Please help me with this problem, I'm not entirely sure on what to do to solve it. Thank you, tutors. The weight of an object is related to its length by the equation: weight (in pounds) = 3L^3 (in feet). If the object is 6 feet tall, what is its weight? Given answers: A 6...
*January 6, 2016*

**Health**

100% using B C C D A thank you!
*January 6, 2016*

**physics **

Two cyclists start out on the same trail together that is overall 20km long. The first cyclist completes the entire trail and is traveling at a constant 20 km/hr for the away part of the trip and then only 15 km/hr for the return trip. the Second cyclist, who is slower, is ...
*December 23, 2015*

**physics **

Question 1) A rock is dropped from the top of a 100 meter tall cliff. A. ) How long will it take for the rock to reach the ground. B) What will be the velocity of the rock when it hits the ground? C) How long will it take for the rock to reach the ground if the rock is thrown ...
*December 23, 2015*

**physics**

1. A car travels from one point to another point that is 4km to the east of its original position and then back to its original position in 22 minutes. What will be the car's average speed? What will be the car's average velocity? 3.) A truck is moving with a velocity ...
*December 22, 2015*

**physics**

Thankyou so much Damon! I just confused where to put what numbers and what Equation to use. Also to clarify: Constant Speed is always = V1 Average Speed is V2= Also how do you know when to use -9.8 m/s/s as constant acceleration and not 9.8 and also using 4.9 or -4.9 m/s/s?
*December 20, 2015*

**Physics**

Two springs are set up on a table. The longer spring has a spring constant of 221 N/m and an initial length of 44.0cm. The shorter spring has a spring constant of 725 N/m and an initial length of 22.0cm. How far above the table is an 9.30kg ball when it reaches its equilibrium...
*December 17, 2015*

**math please help i'm new**

Thanks!
*December 16, 2015*

**math please help i'm new**

What is the diagonal of a 9 in x 12 in rectangle?
*December 16, 2015*

**Algebra**

Which of the following describes a correct method for solving the equation below? -7/2n + 5 = -16 1. add 5 to both sides, then divide both sides by 2/7 2. subtract 5 from both sides, then multiply both sides by -7/2 3. add -5 to both sides, then multiply both sides by -2/7 4. ...
*December 15, 2015*

**Chemistry**

Compute the number of molecules of water driven off when 12.05g of sodium acetate trihydrate is heated.
*December 12, 2015*

**Social Studies**

Thank you tutor Reed for reviewing the questions and checking my answers. Sorry for late reply, decided to work on more questions, but I got distracted with other work. For #1, it wouldn't be easy to find out where somebody lived before houses and businesses had street ...
*December 12, 2015*

**Social Studies**

I think for #3 it's not only economic, but maybe social?
*December 12, 2015*

**Social Studies**

Please check the 6 questions with my answers. Thank you. Social Political Economic? For each of the following statements, determine whether the statement is Social, Political, and/or Economic in nature. Some statements can be two or more types. 1. "The federal government ...
*December 12, 2015*

**Social Studies**

"influenced [the sugar plantations] toward the end of the nineteenth century in Hawaii". Sorry I forgot to add that.
*December 12, 2015*

**Social Studies**

Thank you tutor Reed for checking my question and work out. It's not a surprise you don't know who Aaron Stern is, for all I know he's just a tutor that reviewed my questions and answer. The agents are the sugar middlemen like Hackfeld, one of the members Big 5 ...
*December 12, 2015*

**Social Studies**

Thank you tutor Aaron for checking my work! I still have a lot of questions that I need to work on, so just this question won't be enough. The exam is 80 points, so I really want to know if my answers are correct, each question is 2 points. I don't want to be going in ...
*December 12, 2015*

**Social Studies**

Please review the question and my answer. Thank you tutors. Q: What did AGENTS do for the sugar plantations? My answer: Agents took over the sugar plantations. If there is more than that for the answer that I gave, then please tell. Thank you tutors. I also got my answer from ...
*December 12, 2015*

**Social Studies**

I'm not sure if I do need more information about the 1875, is the information from my answer enough? I got the information for my answer from a reading that has already been cited from my Social Studies teacher, but I'd like to see from you or any other tutors if that...
*December 12, 2015*

**Social Studies**

Please review the question and check my answer. Thank you tutors. Q: What was the Reciprocity Treaty? My answer: The Reciprocity Treaty allowed Hawaii sugar into the United States duty-free and set of rapid growth in the Island's sugar industry. I also got my answer from a...
*December 12, 2015*

**Social Studies**

I don't know how to check my answer ... I could only check with the other students in my class, and only girls, and this is what one of them told me. That's why I'm checking on this site. Sorry for the confusion, but this is for an exam and I don't need to cite...
*December 12, 2015*

**Social Studies**

Please review the question and my answer below. Thank you tutors. Q: Which modern-day shipping company was originally founded by one of the Big 5? My answer: Matson I also got my answer from a reading I was given from my teacher, and I don't want to cite it. I am ...
*December 12, 2015*

**Social Studies**

Okay, thank you Writeacher for the advice. But, can you please check my answer? I still don't know if I'm correct or not (and I don't think anyone else will tag along and check), but I think from the past replies, I will have to say a yes?
*December 12, 2015*

**Social Studies**

Errrrrr, even if I was given a reading from my teacher that has already been cited by her? Sorry, I'm really stubborn. Also, is my answer correct? I really just want to have it checked, since I can't check with other people right now. My answers in my other posts are ...
*December 12, 2015*

**Social Studies**

I don't know how to check my answer ... I could only check with the other students in my class, and only girls, and this is what one of them told me. That's why I'm checking on this site. Sorry for the confusion, but this is for an exam and I don't need to cite...
*December 12, 2015*

**Social Studies**

Please review the question and check my answer below. Thank you tutors. Q: Which of the Big 5 companies were started by missionaries or their sponsors? My answer: Alexander & Baldwin & (and) Castle & Cooke. I also got my answer from a reading I was given from my teacher, and I...
*December 12, 2015*

**Social Studies**

YOU ACTUALLY FOUND THE SOURCE !!! Well, sorry I couldn't explain myself for not citing the answer's source, but I will now. Since this is an exam question, and I wasn't given any answers from my teacher and that I have to find them myself, I am checking my answers ...
*December 12, 2015*

**Social Studies**

Please review the question and check my answer below. Thank you tutors. Q: What was the effect of the McKinley on the value of Hawaiian-grown sugar? My answer: Funded the "most favored" status of Hawaiian-grown sugar and rewarding American producers with a 2 cent per...
*December 12, 2015*

**NHD (Social Studies)**

Okay, then. I guess I'm on my own. But, I don't need a pat on the back, what I need is a clarification on my answer I give. If you won't do it, then I can have other tutors check. But, thank you for trying to help me. The resource you gave me was helpful for citing...
*December 12, 2015*

**NHD (Social Studies)**

Oh, I think I got the answer now. I got the answer from my experience: In quotation marks.
*December 12, 2015*

**NHD (Social Studies)**

Thank you tutor Writeacher for reviewing my question. I actually have to use the MLA format when citing the website, but I still don't get how to cite the title of a website. I looked in the MLA format, looked in the Electronic Sources, and under Basic Style for Citations ...
*December 12, 2015*

**NHD (Social Studies)**

Please help me out on answering this question: For a working bibliography, how is a title for a website cited? Thank you tutors for reviewing the question. I might have more social studies questions and then algebra questions, so if you see more questions under the subject NHD...
*December 12, 2015*

**English**

No problem! Hope I was of help to you(:
*December 11, 2015*

**English**

In 1860 he got 59% of the votes, In 1864 he got 90%. What would your answer be now?
*December 11, 2015*

**Algebra 1**

Thank you so so much, Steve! It is actually making some sense to me. The point slope would be handier if there was more than one variable, right?
*December 11, 2015*

**Algebra 1 **

I'm currently working on a project for algebra in which we have to study two cab companies and their flat fees/how much they charge per mile. One of the taxi services has a flat fee of $4.25, with an added $0.50 for every mile driven. The question I need answered is "...
*December 11, 2015*

**history**

No worries I know what it is now.
*December 11, 2015*

**history**

Oh ok then would it be B?
*December 11, 2015*

**history**

The last part of the Declaration of Independence contains a list of complaints the colonists had against King George. Which of the following best describes an economic complaint the colonists had toward the king? A)He cut off trade. B)He took away colonial laws. C)He protected...
*December 11, 2015*

**Health.. NEED HELP ASAP**

I used stacie's answers and got a 100%. Thank you so much!
*December 9, 2015*

**Algebra**

Thank you tutor Damon. I still don't understand, for the equation you gave me for #2, I got x = 12.5 and when I check it, 3 - 50 = -47/5 = -9.4 + 7 = -2.4 and not 0. For #3 and 4, I still don't understand how to solve it.
*December 9, 2015*

**Algebra**

There are 4 problems that I don't understand how to solve so, please help me. A numerical explanation with words explanation would be nice. Thank you tutors. Rewrite each equation so it is in the form ax + b = c or x + d/e = f, where x is a variable. Then solve the ...
*December 9, 2015*

**physics**

A spring scale hung from the ceiling stretches by 6.1 cm when a 2.0 kg mass is hung from it. The 2.0 kg mass is removed and replaced with a 2.5 kg mass. Part A What is the stretch of the spring?
*December 9, 2015*

**English**

I have a few questions. It was a long assignment and most of the questions were easy but a few I'm nervous about. Short story "The Olympic Swimmer" Who will be the winner bold? Athletes from both far and near Train and strain to be the best. But who will win the ...
*December 7, 2015*

**Sign Language**

A comparative adjective is used to show comparison between two or more nouns or pronouns. True*** False To make the comparative form of an adjective in ASL, you add the -ER sign to the beginning of the work. True False***
*December 7, 2015*

**L.A**

Think about the work you completed in your reading character role. Determine the ideas that would be most worthy to share in a literary discussion about Johnny Tremain. Provide an explanation for your choices. How did the role you selected and the work you completed help you ...
*December 6, 2015*

**Algebra**

1.C 2.D 3.C 4.D Ok so who ever posted these questions messed up #2 on here is actually number 4 on the thing
*December 6, 2015*

**History**

How did dissolving the monasteries give Henry money?
*December 5, 2015*

**Algebra**

Thank you so much Steve ! Very much appreciated for you sparing your time to check my work. I understand now.
*December 2, 2015*

**Can any one please check my work? Please? - Algebra**

ASAP
*December 2, 2015*

**Algebra**

I have 3 questions with my answers and would like you to check them. If they're wrong, then please provide and explanation to how to do them. Thank you tutors. Write each sentence as an equation. 1. Eight less than 1/3 a number n is -13. My answer: 1/3-8n = -13 2. A number...
*December 2, 2015*

**Calc 3**

The mass density at a given point of a thin wire is C is delta(x,y,z)=x. If C is parametrized by r(t)=<e^t,2t,2e^-t>, 0<=t<=1, find the mass of the wire. I think the integral is from 0 to 1 of e^t*sqrt(e^(2t)+4+4e^(-2t)), but I don't know how to solve it.
*December 2, 2015*

**Calc 3**

Compute the flux of the vector field v(x,y)=(x,y) across the circle around the origin of radius 3. Compute the flow of the vector field v(x,y)=(x,y) along the circle around the origin of radius 3. I know the equations to find flux and flow, but I don't know how to do it ...
*December 2, 2015*