# Posts by tabby

Total # Posts: 225

**Chemistry**

Find the number of mL of 4M HNO3 solution required to react with 216g of Ag according to the equation 3Ag+4HNO3->3AgNO3+2H2O

**physics**

An airplane is 5,000 m above an observer and 2.1 km to the west of them and 1.5 km to the north of you. Determine the angle to the plane in the x – y axis and the total distance to the plane from you. Choose the x-axis east, y axis north, and z axis up.

**Biology Help**

Describe how a monomer is the basic unit of all macromolecules. Thank you! :)

**LINEAR EQUATIONS**

how do i solve this: y = -2x +4

**Nurs**

i need to draw a concept map that represents the relationships among the concepts under study for either Middle-range theory, Grand theory, or practice theory. HELP!

**Math-URGENT!!!!**

write the parametric equations of -3x+1/2y=2/3. please help me!!!

**Math - Urgent!!!**

Write the equation of the hyperbola for which the length of the transverse axis is 6 units long anf the foci are at (0,5) and (0,-5). Someone please help me with this question. Thanks in advance.

**Math -Urgent!!!**

List all the possible rational zeros of f(x)=3x^3-x^2+2x=2. Please help me. I don't understand how to do this. Can someone show me please.

**Rational Forms**

List all the possible rational zeros of f(x)=3x^3-x^2+2x=2. Please help me. I don't understand how to do this. Can someone show me please.

**analyzing poem**

You're welcome. I'm a word-nerd and write some poetry of my own, so I like tryign to figure out what other Poets were thinking when they wrote their works.

**analyzing poem**

The tone is mournful. You can hear the sorrow and longing in the lines: "He was the last. Truly the last. Such yellowness was bitter and blinding Like the sun’s tear shattered on stone." The theme is freedom, or rather, the lack of it. The butterflies are a ...

**World War 1**

But to simply tell Serbia to deal with it's own problems would not have been advisable. The collapse of Serbia would effect the entire Balkan Peninsula, which would effect the oil consumers, which would effect both Russia and Germany as they used oil to fuel the expansion ...

**World War 1**

In my opinion they should have turned Austria-Hungary into an autonomous noman's land. Neither country would be allowed to enter without permission from the other, and the Austria_Hungarians would have been allowed self-rule under some supervision, like we did with Puerto ...

**World War 1**

A pact with Russia to split Austria-Hungary would have been the logical choice, but the borders would have been too close for the comfort for either country.

**World War 1**

You need to understand something. Austria-Hungary was disputed land becasue it bordered both Russia and Germany. Both countries wanted it. But Germany was a little smart. They saw the spread of communism in Russia and knew if Russia gained hold of Austria-Hungary, Russia would...

**Help W/ Definite Integrals**

Oh wow. Thank you so much. That was much more help than the book gave me! Thanks and God bless, Reiny!

**Help W/ Definite Integrals**

Evaluate the definite integral of (4x^3-x^2+2) from 5 to 2. Can someone please explain what I'm being asked to do? My book is not clear on this concept.

**Abortion**

Mercy Killing. That's what the Nazis called thier policy of exterminating the "undesirables" (or unwanteds) out of their society. The idea of murdering children because they're too young to care for themselves is no different than murdering the ailing, ...

**Vertices - Reflections&Tranlations?**

Thanks for reading this! A triangular prism has vertices at A(2,-1,-1) B(2,1,4) C(2,2,-1) D(-1,-1,-1) E(-1,1,4), and F(-1,2,-1)? This question has two parts: 1 - Which image point has the coordinates (-3,2,1) after a translation using the vector <-5,1,3> I'm thinking...

**Reiny Damon Bobpursley?**

Thanks for reading this! A triangular prism has vertices at A(2,-1,-1) B(2,1,4) C(2,2,-1) D(-1,-1,-1) E(-1,1,4), and F(-1,2,-1)? This question has two parts: 1 - Which image point has the coordinates (-3,2,1) after a translation using the vector <-5,1,3> I'm thinking...

**Reiny or Damon or Bobpursley**

Express the series 11 + 18 + 27 +...+ 171 using sigma notation. Usually you would take 27-18 and that's the step between numbers, right? (I think its the k-value?) But 27-18=9 and 18-11=7. Are we stepping by k+2 here? Like k, k+2 k+4, k+6...? Please help me. I'm not ...

**Evaluating Limits**

Oh....That would make more sense. Thanks for explaining that!

**Evaluating Limits**

Evaluate lim x/((x+2)^2 - 4) as x-> 0 or state that the limit does not exist. My book said I can substitute 0 into the equation. I did that and came up with ____0_____ (0+2)^2 -4 which simplifies down to ___0___ which = _0_ which = _0_ = 0. 2^2 - 4 4-4 0 That's ...

**Ethics**

I'm sorry if this comes across rude or forceful or anarchy-ish. I'm passionatly pro-life.

**Ethics**

Mercy Killing. That's what the Nazis called thier policy of exterminating the "undesirables" (or unwanteds) out of their society. The idea of murdering children because they're too young to care for themselves is no different than murdering the ailing, ...

**English (Star-Wars)**

If you want this sentance revised, I think it should read: "When the movie Star Wars premiered in 1977, it's special effects were both revolutionary and surprising." That's my opinion, but I'm just a high school senior and not a tutor. I hope this helps...

**Resultant Force?**

a force F1 of 35 newtons pulls at an angle of 15 degrees notrth of due east. A force F2 of 75 newtons pulls at an angle of 55 degrees west of due south. Find the magntiude and direction of the resultant force. Please help me - I have no idea what to do or even where to start!

**English (curious question)**

My parents both said Spanish was easier. I took Spanish 1 and 2. I did everythign I was told, studied everythign I had. I can barely speak five sentances coherently, though i finished my studies of the language six months ago. I cannot roll my r's no matter how hard i try...

**Parametric to Rectangular?**

find the rectangular eqaution of the curve whose parametric equations are x=5cos2T and y=-sin2T, where 0 is less than/equal to T which is less than/equal to 180

**College Majors?**

I just might. I just might.

**College Majors?**

Good points.

**Sum Of Unit Vectors?**

Thank you so much for providing a clear explanation!! :)

**Sum Of Unit Vectors?**

write MN as the sum of unit vectors for M(-3/4, 5, 2/3) and N(6, -9, 3/5). Someone help me please?

**Vectors?**

Find an ordered triple to represent vector x in x = -6z+1/4y if vector y=<2,18,-4/5> and vector z = <-1/2, 3/4, -1/6> Please and thank you. Multiple Choice: a) <25/8, 0, 4/5> b) <7/2, 0, 4/5> c) <7/2, 0, 6/5> d) <7/2, 33/8, 4/5>

**Vectors?**

@Damon: Thank you!

**Vectors?**

find an ordered pair to represent vector u in u = (3/4)w-2v if vector w = <-2/3,4> and vector v = <3/8,-2> How do i do this?

**Government**

Dear Charles - Break this up into separate questions. 1) Discuss the nature of the corruption. Is it political? Violent? 2) Discuss the cause of the corruption. Is it based on religion? Is it stemming from one leader? Is it lack of money/food/basic necessities? 3) Discuss ...

**Vectors/Magnitude**

thank you!

**Exponential Functions?!**

solve 9^(2x-3) > 4. Round your answer to the nearest hundredth. The part in parenthesis is up at top like an exponent. I dont' know how to do this. Please help me.

**Hyperbolas**

Find the equation of the hyperbola whose vertices are at (-1,-5) and (-1,1) with a focus at (-1,-7). Please and thank you.

**Anti-ln?!?!**

Ah. Thank syou o much for your time and help. God Bless you.

**Anti-ln?!?!**

Is the answer 0.9521811297? That's what I got using the e^ key. (I don't have an inverse key on my calculator. It's a Casio fx-9750G PLUS Power Graphic, and the manual for it is literally one inch thick with 453 pages.)

**Anti-ln?!?!**

use a calculator to find the anti-ln(-0.049) to the nearest ten thousandth. My calculator doesn't do anti-ln. just ln. Someone helo me please?

**lang. arts**

Stand in your own space and know you are there. - Anonymous And of course, my favorite Bible quote from John 3:16 - For God so loved the world that He gave His one and only Son that whoever beleives in Him will not perish but shall have eternal life. I do not know if I am ...

**Polar equations**

write the polar eqaution 3 = r cos (theta - 315) in rectangular form.

**rational exponents**

thank you

**rational exponents**

express the third root of(8a^3y^5) using rational exponents. Please show your work!

**bobpursley**

write the equation of the ellipse with foci at (0, -sqrt3) and (0, sqrt 3) and for which 2a=4 i've done this befoe, but with squareroots as endpoints. and if 2a=4, a=2, right? Please help me.

**distance formula**

Thank you for taking the time to double check my work! God bless!

**distance formula**

I need to find the distance between two points, (6,-3) and (-1,4). d = sqrt[(x2-x1)^2 + (y2-y1)^2)] I got that down to the sqrt of 98, which is the decimal 9.899494937, approximated at 9.9. Is this the right answer?

**Logarithms**

thank you

**Logarithms**

solve 6 = 15^1-x by using logarithms. Round your asnwer to the nearest thousandth. PLease help?

**Polar equations - Help?**

thank you so much, I don't know how i missed that identity.

**Polar equations - Help?**

i need to graph the polar equation 2 = r cos (theta + 180) on one of the graphs that looks like a flattened globe. So far I have 2=r cos180 costheta + r sin180 sintheta what do i do now?

**Polar Equations**

thank you so much for your time.

**Polar Equations**

I am supposed to identify the classical curve that is represented by r = 1 + sin Theta. I think it's a cardioid, because its equation is r = 1 + 1 sin theta (r = a + a sin theta). Is this correct?

**earth**

I beleive that is the ozone effect, but I am not sure.

**Finance/ MAth**

find the balance after 15 years of a $2500 investment earning 5.5% interest compounded continuously Someone show me how to do this, please?!

**Trig/Precalc**

solve 6=e^0.2t Round your answer to the nearest hundredth Someone please help me - I don't understand this problem at all!

**Trig?Precalc**

write the rectangular equation x^2+y^2=6 in polar form. I do not want people to just post the answer! Please, show your work so that I can understand how to do these kinds of problems myself! Thank you and God Bless!

**English**

These look correct to me.

**Writing Help please!!**

There are other forms of the word posion too, if this is the word that is stumping you. There is venom, toxin, and contagion. You could do soemthing like "Venom in My Veins" since her blood is poisoned. Also there is the phrase "Pick Your Posion," which ...

**writing**

Well, it's a little hard to give suggestions without seeing the paragraphs you are transitioning between. However, I think i might have some sugestions. They are: It is for this purpose that... Therefore... All this to say... In addition to... In lieu of this point... In ...

**Essay (Please proofread) I appre**

You're very welcome.

**Essay (Please proofread) I appre**

Hurricane Katrina has been described as “one of the most devastating natural disasters” in U.S History. Do you have a source for this quote? If so, please put it at the end of the sentance in parenthesis. The storm’s wrath was the third deadliest to hit the ...

**fhjgf**

Not sure why you labeled this question fhjgf, but I'll see what i can do. Omar made $378 for 78 hrs of work. At the same rate, how much for 12 hours of work. First you need the rate for one hour of work. Divide 378 dollars by 78 hours of work. You should get about 4.85 ...

**english**

Sure, just click Post A New Question, label it English - Please Review, and then post your essay in the same feild where you would post a question.

**art history**

You don't have a time period listed, but you probably don't need one. Throughout most of history, Italy has been considered a utopia for painters. The emphasis on fine arts was and still is considered necessary for a good education. Less popular would be France.

**English 4**

Is this a question or a general statement you want an opinion on? No matter, because if either, it is highly controversial statement. There are many people out there who gather others around them because they need to feel surrounded. They might feel lonely and invisible, and ...

**Trig/PreCalc**

Teach me how to express 5sqrt3 - 5i in polar form please. I don't want you to do the work for me. Just show me the steps I need to do the work properly on my own. Otherwise I will not pass this class or the exam when I enter college, and I do not want to retake PreCalc. ...

**English--Essay help**

Thank you. I plan to go to college to major in journalism and get my bachelor's degree, possibly a master's. And Mackenzie, if I can put in another word - make sure you are passionate about your subject. A lack of enthusiasm in your topic not only makes your argument ...

**English--Essay help**

Dear Mackenzie - a thesis statement is the begining of your paper. It sums up your entire argument. It also captures the reader's attention or loses it becasue it is the first thing they read. MAke your statement bold and grabbing. Back it up in your argument. If you are ...

**ENGL-1020**

Dear Witchita - Writeacher is right. This poem is meant to be heard because it is Onomatopoeia (pronounced on-oh-ma-toe-pea-uh). Onomatapoeia, in the most basic form, is the use of words that imitate sound to form a poem. The sound words are meant to enhance your visual ...

**English**

Dear Paisely Jane - This is a good idea, although it has some grammar and punctuation that needs to be fixed. As for what comes next, well, that could be anything. Mabye their mother found it and, since it was dirty, decided to clean it up a bit. Maybe their father came home ...

**trig/precalc**

bobpursely: Thank you so much! God bless you for taking the time to help!

**trig/precalc**

a car's flywheel has a timing mark on it's outer edge. the height of the timing mark on the rotating flywheel is given by y=3.55sin[x - (pi/4)]. graph one full cycle of this function. I was not taught how to graph a function like this, only the simple y= sin x and y= ...

**Art and Writing**

Lauren: All arguments are very good points made by both sides. And yes, it is hard to make a living as an artist or writer. They aren't called starving artists for nothing. On the other side, if art and creativity are your passion, nothing less will ever satisfy you. (And ...

**chemistry**

for apex the answer is add acid

**English**

Dear Anon - If you want evidence to support your claim, may I suggest you pick an airline and use it fictitiously in your essay. By this I mean, write something like "Your friend Miranda moves to LA, California. You live in Houston, TX. You were very close and enjoyed ...

**English College composition I**

Your thesis statement should be the sentance that grabs the reader's attention and gets them interested while at the same time states your viewpoint. Be sure you know where you stand on your topic - you obviously do. I like your first thesis statement, especially the part ...

**Math**

If sinθ=1/5 and θ is in Quadrant I, find the exact value of sin2θ.

**Math/Trig**

Given A=56degrees, C=61degrees, and b=10.5, solve triangle ABC. If no triangle exists, explain why. If two solutions exist, write both. Round your answer to the nearest tenth

**Math/Trigonometry**

1. Solve: 2 cos² x - 3 cos x + 1 = 0 for 0 ≤ x < 2pi. 2. Solve: 2 sin x - 1 = 0 for 0° ≤ x < 360° 3. Solve: sin² x = cos² x for 0° ≤ x < 360° 4. Solve: sin x - 2sin x cos x = 0 for 0 ≤ x < 2pi.

**Trig/Math**

f(x)=1/3sin(2/3x-π/4)+4 Find the amplitude, period, phase shift, and vertical shift of the function. Amplitude:1/3 Period:?????? Phase Shift:??????? Vertical Shift:+4 Please Help ?

**Trig/Math**

f(x)=1/3sin(2/3x-π/4)+4 Find the amplitude, period, phase shift, and vertical shift of the function. Amplitude:1/3 Period:?????? Phase Shift:??????? Vertical Shift:+4 Please Help ?

**Trig/Math**

3. f(x)=1/3sin(2/3x-π/4)+4 Find the amplitude, period, phase shift, and vertical shift of the function please.

**Trig**

f(x) = -cos(3x + pi). Find the amplitude, period, and phase shift of the function.

**Trig/Math**

i didn't mean to put a negative sign

**Trig/Math**

Write the equation of the cosine function with an amplitude of 1, a period of 3pi/7, a phase shift of -pi/5, and a vertical shift of 2 units down.

**Trig/Math**

2. f(x) = 1/4 cos(1/2 x + pi/2). Find the amplitude, period, and phase shift of the function. 3. f(x) = -cos(3x + pi). Find the amplitude, period, and phase shift of the function.

**Trig**

2.Graph f(x) = 1/4 cos(1/2 x + pi/2). Find the amplitude, period, and phase shift of the function. 3. Graph f(x) = -cos(3x + pi). Find the amplitude, period, and phase shift of the function.

**Trig**

4. Write the equation of the cosine function with an amplitude of 1/3, a period of 2pi, and a phase shift of 3pi/2. 5. Write the equation of the sine function with an amplitude of 4, a period of pi/2, and a phase shift of -pi/4.

**Math/Trig**

coterminal with 237degrees*

**Math/Trig**

Which of the following is coterminal with ? A)-237 B)33 C)-33 D)597

**Math/Trig**

Determine the period of the function: f(x)=3sin1/2x+2

**Math/Trig**

Find two exact values of sin(cosˉ¹ √5/6)

**Math/Trig**

Convert 2pi/3 radians into degrees please

**Math/Trig**

If the population of rabbits in a certain area is modeled by the function, r=10,000cos(pi/12t)+35,000 where t is the time in months, approximately how many rabbits will there be in August (January is equal to t = 1)?

**Math/Trig**

Write the sine function with an amplitude of 1/4, a period of 3pi, phase shift of pi4 to the right, and a vertical shift of 4 units down.

**Math/Trig**

State the amplitude, period, phase shift, and vertical shift of f(x)=-1/4sin(6x+2pi)+9