# Posts by Student

Total # Posts: 867

Algebra
For the first one, I can kinda see how I could factor v^2 + v - 12.. Would it look something like 2(v -6)? Which is like the numerator on the other side.

Algebra
Please help me simplify the expressions and solve the equations? 1. v^2 + v - 12/ v^2 + 6v + 8 divided by 2v - 6/ v +2 2. 2/ b-2 = b/ b^2 - 3b +2 + b/ 2b - 2 3. 1/ x-2 + 2x/ (x-2)(x-8) = x/ 2(x-8) 4. (m^2 + 2m + 1/ m^3 + 3m^2 + 3m +1 (m^2/m - 3m/3) Thanks!

Algebra

Algebra
Can you help me work this out with long division? r^2 - 7r + 12/ r+4 divided by r^2 - 7r +12/ r^2 + 6r +8 Thanks.

Algebra
Can you please help me with these Algebra word problems? Complete the following word problems. 1. Tell whether the table represents inverse variation. If so, write the inverse variation equation and solve for y when x = 4. Show work that supports your conclusions. Table: ...

What is the median of 29, 49, 27, 64, 79, 59, 29 and 41? 29.0 45.0 59.5 49.0

Algebra
Simplify the expression, if possible. State the excluded values, if any. 1. 5x - 5/ 10x^2 - 25x + 15 2. w^2 + 6w + 9/ 2w^2 - 18 Thanks so much.

Algebra
Okay. Thanks so much. :)

Algebra
I'm asked to simplify these expressions by using long division. I've attempted these a few times and I'm very confused. Any help you can provide would be very much appreciated. 1. (72 - 8x^2 + 4x^3 - 36x) / (x - 3) 2. (8b^3 - 6) / (2b - 1) Thank you.

Algebra
1. How far is the Willis Tower from Navy Pier, given that each unit is approximately 1/8 mile? Round your answer to the nearest tenth of a mile. The Willis Tower is at the point (-6,-3) and NP is at the point (10,9). I did this calculation: d^2 = (10 - (-6))^2 + (9 - (-3))^2...

Algebra
y = 1/2x - 2 Is that right?

Algebra
Find the equation in slope-intercept form of the line that is the perpendicular bisector of the segment between (-3,4) and (3,-8) Can you help me figure this out? Thank you!

Algebra
This is Algebra. Haha.. You can take algebra between 8th and 11th grade. Something like that.. Not really a grade thing.. Just a subject. Why do you ask?

Algebra
# 2: * I need to find the length of a (the short leg), the length of b, and the length of the hypotenuse.

Algebra
Hi. 1. I have a right triangle here. I know that I am to use the Pythagorean Theorem: a^2 + b^2 = c^2. In this case, side a is (x + 4) and b is x. The hypotenuse is 4 + (x + 4) So here we have the equation: (x + 4)^2 + x^2 = 4 + (x + 4)^2. I need to find the length of a (the ...

Algebra
You say that I can't use a^2 + b^2 = c^2, but that formula is called the Pythagorean theorem. I was instructed to use that formula. Am I misunderstanding what you're saying?

Algebra
For #1: When I get √(9y - 196) = -7 can I square each side to get 9y - 196 = 49? Then I can add 196 to both sides. It cancels out on the left side and I have 9y = 245. Then I can divide both sides by 9. I would get y = 27.2. Would that be correct?

Algebra
I have a couple questions about # 1. Why can't it be a^2 + B^2 = c^2? I think that's what I'm taught in class. Also, if you square everything, isn't still going to come out the same? If you do something to the entire expression, it doesn't change the value...

Algebra
1. √(9y - 196) + √196 = √49 My work: I squared all 3 roots and got 9y - 196 + 196 = 49 The - 196 + 196 cancels out and we are left with 9y = 49. divide 49 by 9. = 49/9. I'm pretty sure this is wrong. Can you show me where I messed up? 2. √x(√9...

Algebra
Well, I entered in the calculator √28 + √63 + √175 and got 6.06. I just entered the expression. I didn't take the sq roots first.

Algebra
I have a question. #3: On my calculator, √28 + √63 + √175 = 6.06, but 10√7 = 26.5. Shouldn't they = the same number? As for #5.. I'm not really sure, tbh. I tried that problem a while a go and I'm not quite sure where I was going with it.

Algebra
Simplify the expressions and solve the equations 1. 2√3 - √12 My answer: 2√3 - 2√3 = 0 2. √(5p + 5)^2 = √(6p + )^2 I got the answer p = 4 3. √(28) + √(63) + √(175) This one seems so simple. I tried multiple times, but I can...

Algebra
Okay, I have a graph of a sq root function. I'm told to write the radical function for f(x). Some points on the line are (1,-2) and (5,0). I know you probably can't help me a whole lot, but if you can give me any insight into how to figure this problem out, I'd ...

Algebra
Y values: -2, -1, 0, 1. Right? I'm not sure why I had so much trouble with this. I think I was making a minor mistake in my calculations that set everything off. Thanks for your help.

Algebra
Okay. Thank you. :)

Algebra
Complete the table for each function. 1. f(x) = √x The x values are 0, 1,4 and 9. The corresponding y values that I got are 0, 1, 2 and 3. 2. g(x) = -1/4√ x The x values are 0, 1, 4, and 9. The corresponding y values that I got are 0, -1/4, -1/2 and -3/4 3. h(x...

Inverse laplace
Given F(s) = 1/((s-1)^(2)(s+1)) After using partial fractions, I got (1/4)[(2/((s-1)^(2)))+(1/(s+1))-(1/(s-1))] before applying Laplace inverse. Apparently, the answer is (1/4)[2te^(t) + e^(-t) - e^(t)], however I don't know where the t in 2te^(t) came from. Can someone ...

Polynomial
Arrange the terms of the polynomial in descending powers of p. 13rp-4r^4p^4-4r^2p^3 Is my answer correct? -4r^4p^4-4r^2p^3-13rp

Algebra

Algebra
Arrange the terms of the polynomial in ascending powers of b. 25db^5-7dm+3b^10-6db^6 My answer is: Am I correct? 25b^5d-7dm+3b^10-6b^6d=3b^10-6b^6d+25b^5d-7dm

Intermediate Algebra
Given f(x)=5+6x-x^2 find and simplify. A)f(t-2)=____? B)f(z+h)-f(z)=____? C)f(b)+3=_____?

Algebra
Arrange the terms of the polynomial in descending powers of p. 13rp-4r^4p^4-4r^2p^3

Algebra
Given f(x)=5+6x-x^2 find and simplify. A)f(t-2)=____? B)f(z+h)-f(z)=____? C)f(b)+3=_____?

Algebra
I have a word problem here. A batter hits a fly ball. A scout in the stands makes the following observations. Time (in secs) .75, 1.5, 2, 2.75, 3.25, and 4.75 Height (in feet) 77, 133, 160, 187, 194, and 169 1.What type of function best models this data? Linear, Exponential, ...

Algebra
1. Parent Quadratic Equation 2. Coordinate of the vertex 3. quadratic formula A. -b/2a B. y = 2x C.b^2 - 4ac D. y = a(x - h)^2 + k E. x = -b +/- (square root of) b^2 -4ac/2a I think the answers are: 1. B 2. C 3. E Are these correct? Thanks!

Algebra
Thank you. Also thanks for correcting the "whether" VS. "weather" mistake. I always have trouble with that. :)

Algebra
Hiya! I have a function here: y = x^2 - 4x - 32 I have some questions about it. 1. I think this parabola opens up. Am I correct? Can you explain how you know weather it opens up or down? 2. Can you tell me what the axis of symmetry and the vertex of this parabola are? 3. Can ...

Algebra
Thank you!

Algebra
I have a graph here. The vertex is (4,-4), then the points (3,-3) and (5,-3), then the points on the x axis are (2,0) and (6,0), then the points (1,5) and (5,5). This is a parabola that opens up. I'm asked to write a function for f(x) in standard form. I'm a little ...

Algebra
Will you please check my work? I'm supposed to "Use square roots to solve the following equations; round to the nearest hundredth, if necessary." 1. 5x^2 - 526 = -651 My Work: 5x^2 - 526 + 526 = -651 + 526 (sq root of) 5x^2 = (sq root of) -125 = 5x/5 = 11....

Algebra
I wrote the first problem incorrectly. It's supposed to be 5x^2 - 526 = -651 I apologize.

Algebra
Will you please check my work? I'm supposed to "Use square roots to solve the following equations; round to the nearest hundredth, if necessary." 1. 5x^2 - 256 = -651 My Work: 5x^2 - 526 + 526 = -651 + 526 (sq root of) 5x^2 = (sq root of) -125 = 5x/5 = 11....

Algebra
My problem was that I didn't understand that they wanted me to plot the positive AND the negative x values (hence why they labeled them +/-)to form the parabola. Thank you for your help!

Algebra
Okay, so I'm asked to "Complete the table for each function". 1. f(x) = x^2 x = 0, +/-1, +/-2, +/-3 y = 0, 1, 4, 9 So, I plugged each of the x values into the equation and got the y values that are shown above? Are those correct, or did I do something wrong? We ...

English
A. Do you know what you want to become when you grow up?

APA Format
How should I input a sub-heading in APA format? For example: Community Core (centered/bold) Demographics of community (left aligned/indented/not bold)

Intermediate Algebra
(Thank you for all your help on this site) A basketball team recently scored a total of 95 points on a combination of 2-point field goals, 3-point field goals, and 1-point foul shots. Altogether, the team made 54 baskets and 16 more 2-pointers than foul shots. How many shots ...

Algebra
I got 405, 210, and 163.

Algebra
In the United States, the highest incidence of fraternal twin births occurs among Asian-Americans, then African-Americans, then Caucasians. Of every 16200 births, the total number of fraternal twin births for all three is 778, where there are 195 more for Asian-Americans than ...

Algebra
In triangle ABC, the measure of angle B is 8 degrees more than three times the measure of angle A. The measure of angle C is 37 degrees more than the measure of angle A. Find the measure of each angle. What is the measure of angle A__? What is the measure of angle B__? What is...

Explain how a drug sits on acetylcholine receptors will affect muscle function? Is it because the drug would act as a blocking agent to prevent the receptors from gathering information on what to do?

Anatomy and Physiology
Explain how a drug that sits on acetylcholine receptors will affect muscle function? Is there a good source online to find the above question? My book doesn't go into great detail for me to answer the question.

2nd Order linear ODEs
I'm having trouble solving this problem: For the equation x^(2)y′′ - xy′ = 0 , find two solutions, show that they are linearly independent and find the general solution. Hint: Try y = x^(r). I divided the equation by x^(2) first to simplify it, and then I...

Explain, physiologically, how you would decide to use ice or heat on an injury? My book doesn't have any good info on this question. Is there a reputable website or article to get info to answer this question?

Python: Creating function
The value of the inventory of a particular book is the price of that book times the number of copies we have in stock. Write a function called inventory_value that takes a Book as its argument and returns the value of our inventory of that book. Then write a function called ...

Python: Named tuples
Nevermind, figured it out! :D

Python: Named tuples
I've been trying to print a list of the book titles within the named tuple in alphabetical order, but I don't know what I'm doing wrong. I've set up my named tuple as so: Book = namedtuple('Book', 'author title genre year price instock') # Book ...

Integrating Factors
I see, thanks!

Integrating Factors
I've been working on this hw problem for a while now, but I'm stuck in the integration process. I'm pretty sure I made an error, cause I can't seem to be able to integrate the right side of the equation. Q: (1/(x^(2)+1))y' + xy = 3 using the equation d/dx(...

Math: Differential Equations
Woops, wrong problem. The problem I need help is actually: Q: Is it possible to solve the equation y'=(xy)/(cosx) for y(0)=1? Sorry about that!

Math: Differential Equations
I've been stuck on this math hw problem for a while, I was thinking of taking the integral of the equation, but I've been messing up too much that I'm not sure anymore. Q: Is it possible to solve y'=x/(x^(2)-1) for y(1) = 0? Thank you!

Math: Differential Equations
I'm given y''= sin(x) with the initial conditions of y(0)=0 and y'(0)=2. I've already taken the integral two times to get an answer of y= -sin(x)+3x, however, I'm stuck as to how to make this equation in terms of x=... Please explain, I'd really ...

Okay, thanks for the quick response!

I mean the phrase rule sentence=Noun phrase, aux, verb phrase That is the phrase structural rule. I understand what you wrote but I can't connect it with what am trying to figure out. Can you please explain?

I think I got it. The simple sentence phrase rule is used to combine compound sentences. Is this correct?

What phrase structure rule creates coordinate structures? I am confused here. Is it prepositional phrases?

English
If com and pos can be separated just like able and ity, shouldn't I separate them now? I know com is a prefix but I didn't know pos is a root.

English
What is entailment in semantics? List three words (not necessarily related to each other) that evidence entailment and say what meanings each word entails. Can you explain the 3 words part of this question. Three random words?

English
I got: non, de, compose, able, ity. Is that correct?

English
nondecomposability? How many morphemes are in that word. I have five-non,de,ability,com,ity what about the pos?

Physics
Nevermind, I figured it out!

Physics
I've been trying to solve this problem for the longest time, but I still can't get the answer. The answer is apparently 36 degrees below the horizontal. Please explain!! (: A missile is launched from the ground with a speed of 100 m/s at an angle of 45 degrees to the ...

Linguistics/English
I also need help with figuring how to draw certain things like the 'of' and 'on' in the first sentence.

Linguistics/English
Hi, I need more help. I need to know if I diagrammed these sentences correctly. Edith drew some orange flowers on the side of the house. Edith......Flowers (drew,some,orange).......(On)......Side (the)...(Of)....House (the) Final:Noun, Noun, (preposition), Noun, (preposition...

Linguistics/English
Is there any difference? I don't know if its a trick question or if I really have two questions that are the same.

Linguistics/English
Girl (the, young), sent/wrote, Note (a, short), preposition, Mother (her)

Linguistics/English
There are two sentences that vary only by one word difference. Sentences: The young girl wrote a short note to her mother. The young girl sent a short note to her mother. My Answer: Girl sent/wrote Note ---to Mother -the -a -her -young -short The structure is:Noun, verb, noun...

Linguistics/English
I have an assignment about sentence diagramming. I need help. Any example given will be great.

e is 14 and 14 again

Biology
single celled prokaryotes like the bacteria and archaea are the dominant and most diversified groups of living forms today. does this support their ancient origins? Explain

Chemistry
Hey guys! are you from 3.091x ? I wasn't aware that there was a exam, and now it is due in few hours. Can you help me out? Much appreciated. 1)Determine the minimum potential that must be applied to a proton so that, on interaction with a hydrogen atom, it can excite the ...

History

CHEMISTRY
1. For the ion Fe3+ what is the electron configuration and electron atrangement? please explain... i do not understand... 2. F- +. Br2----> Br- + Cl2----->

Math
How do you draw 56 degrees 10 minutes and 26 seconds on paper? protractor ? circle? clock? any website that helps this type of construction? the minutes and seconds threw me off....

Math
The least squares regression line is a unique line for each data set. True The least squares regression line minimizes the sum of the residuals. False

ALGEBRA
-32x^5y^4-24x^4y-16x^3y= _ _ _ _ Factor out: -8x^3y

ALGEBRA
-32x^5y^4-24x^4y-16x^3y= _ _ _ _ Factor out: -8x^3y

Which of the following poems is a dramatic monologue? (A) "My Last Duchess" (B) "Love Among the Ruins" (C) Childe Roland to the Dark Tower Came (D) all of these

College Algebra
what is the equivalent logarithmic form of 6^z=244

algebra
I have no idea totally lost haven't done any type of math in almost 30 years f(x)= x^4-x^3-7x^2+x+6 all the real roots are bounded by -3 and 4. Explain why these are the upper and lower bounds

algebra
how do I find the relative maximum and minimum values of x^4-x^3-7x^2+x+6

algebra
solve x^4-8x^3+64x-105=0 given that 2-i is one solution. must be tired cause my steps are not calculating correctly

math/algebra
find the domain of the function 1) f(x)= log2( 49-x^2) 2) f(x)=In [1/x+5]

math/algebra
solve the equation log2(3x-2) - log2 (x-5)=4

math/ algebra
solve the equation log (4x)= log5 + log(x-4)

Math/Algebra
Sketch the graph of each piecwise-defined function. Determine the domain and range. Identify each point of discontinuity. f(x)= -x if x<0 4-2x if 0 <or= x<3 2x+1 if x >= 3

Math/Algebra
Find the vertex, Focus,and Directrix of the parabola. Graph the equation. y^2=12x

Math/Algebra
Graph the ellipse and locate the foci. 16x^2 +9y^2= 144

Math/Algebra
Find an equation for the ellipse described. center(0,0); major axis horizontal with length10; length of minor axis is 8

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