Confused

This page lists questions and answers that were posted by visitors named Confused.

Questions

The following questions were asked by visitors named Confused.

Help to solve this 1/2 (3g-2) = g/6 nevermind I was missing a bracket in the solution. multiply both sides by 2 This gives 3g-2=g/3 now cross multiply to get 9g-6=g now add a -g to both sides and +6 to both sides. g=3/4

18 years ago

Can you please help me with this problem? I asked earlier, but nobody was able to help me... I've been working on it for about an hour now. A widget factory has fixed costs of 35 billion dollars and variable costs of 781 million dollars per widget. The re...

18 years ago

Also I would like to know how to set this problem up in finding the answer: Find the second derivative. y= sqrt(3x+4) Thanks, P.S. I tried taking 3x+4 and squaring it to the 1/2. I thought that might've been the same, then I took the derivative of that an...

18 years ago

Also can I get some help with this LONG, TIRESOME PROBLEM? Find the derivative using the chain rule. f(x)= ((3x-7)/(6x+3))^4 Thanks a lot! (68/(12x^2+12x+3))*[(3x-7)/(6x+3)]^3 you should double check the answer multiply 4((3x-7)/(6x+3))^3 by the derivativ...

18 years ago

PLEASE HELP ME SOLVE THIS PROBLEM: 4((3x-6)/(6x+2))^3 * ((42)/(6x+2))^2 okay, here your going to use PEMDAS. Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction go in order of PEMDAS. does that help? (3+4}2*-(2*4)2 4=

18 years ago

Write the equation of the line passing through (-3, -5)and (3,0). (a)y= -6/5x - 5/2 (b)y= 5/6x - 5/2 (c)y= 5/6 x + 2/5 (d)y= -6/5x + 2/5 You have to get the slope of the line using equation y2-y1/x2-x1. [0-(-5)]/[3-(-3)] = 5/6 Now that you have the slope,...

18 years ago

write the equation of the line with x-intercept (-7, 0) na d undefined slope. a) y= -7 b) x= -7 c) y= -7x d) x= 0 The answer is b. This is because an undefined slope is m/0. So, its just a vertical line. Since x=-7, that's the line.

18 years ago

write the equation of the line which has y-intercept (0,5) and is perpendicular to the line with equation y=-3x +1 a) y=-3x + 5 b) y= 1/3x + 5 c) y= 3x + 5 d) y= -1/3x + 5 The slope of the 2nd equation is -3...because the equation of a line is y=mx+b, whe...

18 years ago

find the slope of any line perpendicular to the line through points (6,7) and (5,8). a)-1 b)1 c)0 d)undefined y2-y1/x2-x1 = slope So...(8-7)/5-6) = 1/-1 = -1 The slope perpendicular to that would be the negative reciprocal of -1, which is 1. Therefore, th...

18 years ago

"Create a diagram in PowerPoint® or Word mapping job opportunities starting from, or advancing to, the position focused on in your final project." For the diagram, I chose the tree diagram template in PowerPoint. My position is "Web Design." I have been l...

18 years ago

I need to determine a rule as to why the answer is C. A.) Jumping off of a balance beam is different from jumping off a trampoline; each jump requires a unique skill. B.) Jumping off a balance beam is different from jumping off a trampoline; each jump req...

18 years ago

Three samples of an unknown acid are titrated with 0.4901 M NaOH. The average equivalent weight of the acid using the data below is g/equiv 1 2 3 mass of unknown acid (g) 1.020 0.522 0.742 vol NaOH used (ml) 27.72 14.22 20.02

17 years ago

I'm doing an Equivalent Weight and Normality experiment and I got very confused on the discussion questions.[ the unknown is titrated with the KMnO4] 1) In this experiment MnO4- is reduced to Mn2+ by the unknown. What is the equivalent weight of MnO4- for...

17 years ago

.1 M HCl + .1 M NaCl .1 M HF + .1 M NaF .1 M HBr + .1 M NaBr Which of the above would be considered buffers?

17 years ago

Ascorbic acid, H2C6H6O6, is a diprotic acide with a K1= 7.9 E-5 and a K2=1.6E-12. In a .005 M aq solution of ascorbic acid which of the following species is present in the lowest concentration. 1. H2O 2. H3O 3. H2C6H6O6 4. HC6H6O6 5. C6H6O6

17 years ago

What could you infer/say if a person could distinguish the difference between regular and low fat foods? It's for my science fair project. Like, besdies saying that they have an extraordinary sense of taste... >.> And make it about the individual; not as...

17 years ago

Describe the social, economic, and political composition of the decade of corporate greed and how it affected the political climate of the 1980s. Keep in mind that Reagan's tax policies favored some people over others.

17 years ago

Can someone help me find some websites speaking about the social, political, and economic compositions of the Reganomics and how it affected our political climate?

17 years ago

A car is going 20m/s when they see a traffic light 200m ahead turn red. The traffic light is known to stay red for 15s. The driver wants to reach the light as it turns green. It takes them 1s to press the breaks and the car slows down at a constant rate....

17 years ago

A box moves down a conveyor belt the is angled at 15 degrees, at a rate of 6m/s. The box then enters a dump off that is 3m below the end of the belt, what is the horizontal distance between the dump off and the belt? I have no idea where to start with thi...

16 years ago

what are the modifications and x intercepts of the cubed root of (1-x)-1?

16 years ago

What is The solution set of 2k^2=21k-49 ?

16 years ago

A function is a rule, which assigns one and only one range element to each and every domain element? I want to answer that this is true but the word "every" is questionable. am i reading too much into this?

16 years ago

COS[ARCSIN (SIN 3PI/4)] =COS[ARCSIN (SQRT2/2)] =COS [PI/4] = SQRT2/2

16 years ago

Other questions have been asked about the article "Contolling Irrational Fears After 9/11 and Identifying at least two arguments and answering the questions on the syllabus. -I have found two which I think can be used. Will you please let me know if these...

16 years ago

Do you find my answers after the piece of the article to be correct? Do you think my argument is, in fact, and argument? Clearly sheer numbers do not always impress us. It is unlikely, for example, that many Americans *Note: This essay borrows very heavil...

16 years ago

The following data represent total personnel expenses for the Palmdale Human Service Agency for past four fiscal years: 20X1 $5,250,000 20X2 $5,500,000 20X3 $6,000,000 20X4 $6,750,000 Forecast personnel expenses for fiscal year 20X5 using moving averages,...

16 years ago

M divided by five How would i translate that

16 years ago

A Ferris wheel 28.0m in diameter rotates once every 21.0s. What is the ratio of a person's apparent weight to her real weight at the top? What is the ratio of a person's apparent weight to her real weight at the bottom?

16 years ago

The Political Noise Problem. The amount of background noise is important to television news reporters. One station developed the formula showing the noise level in decibels (N) as it relates to the time after the speaker stops talking in seconds (t). Use...

15 years ago

My son brought home this problem... Make a set of at least 12 numbers that have the following landmarks. minimum: 3 maximum: 9 median: 7 mode: 7 someone please help!

15 years ago

complete the table fraction decimal percent 95% .80 3/9 6/8 66 2/3%

15 years ago

I need help finding examples of discrete models used in addition. Can you explain this to me or show me a cite that might help. Thanks

15 years ago

The aquation of tris(1, 10-phenanthroline)iron(II) in acid solution takes place according to the equation: Fe(phen)3^2+ + 3H3O + 3H2O==> (Fe(H2O)6^2+ + 3 phenH^+ If the activation energy is 126 kJ/mol and frequency factor is 8.62 x 1017 s-1, at what tempe...

15 years ago

How long would it take to accumulate $2,000,000 at a rate of 5% with the starting amount of $1,150,

15 years ago

1)A toy train is initially at rest on a track fastened to a bicycle wheel, which is free to rotate. How does the wheel respond when the train moves clockwise? When the train backs up? Does the angular momentum of the wheel-train system change during these...

15 years ago

What about this question? Calculate the mass (g) of PbSO4 that will dissolve in 2000 mL of 0.0694 M K2SO4 solution. The equation represents the solubility process. PbSO4 (s) Pb2+ (aq) + SO42- (aq) Ksp = 1.7 x 10-8

15 years ago

If 380. mL of 0.4294 M aqueous CaBr2 and 250. mL of 0.5880 M aqueous SO42- are reacted stoichiometrically according to the equation, how many mol of CaBr2 remained? Al2(SO4)3(aq) + 3 CaBr2(aq) → 2 AlBr3(aq) + 3 CaSO4(s) -----------------------------------...

14 years ago

What is the rate of the following reaction (M/s) if the rate constant for the reaction is 0.500 L•mol-1•s-1 and the concentration of each reactant is 0.0628 M. (The units for the rate constant depend upon the rate law). CO + NO2 --> CO2 + NO

14 years ago

The rate of the following reaction: Radioactive decay of 90Sr, is characterized by the rate constant k = 0.024 year-1. What is the half-life (in years) for this reaction at the same conditions when the initial concentrations are 0.0356 M? (Round your answ...

14 years ago

The reaction, C2H5Br --> C2H4 + HBr, has a rate constant k = 0.0000100 s-1 at 363 °C and k = 0.000479 s-1 at 427 °C. What is the rate constant for the reaction at 725 K? Round your answer to 3 significant figures.

14 years ago

If 270. mL of 0.08089 M aqueous Pb(NO3)2 and 710. mL of 0.05493 M aqueous Na+ are reacted stoichiometrically according to the equation, what mass (g) of Na+ remained? Pb(NO3)2(aq) + 2 NaI(aq) → PbI2(s) + 2 NaNO3(aq)

14 years ago

If 0.0490 mol of solid CaCO3 and 380 mL of 0.135 M aqueous H2SO4 are reacted, what volume (L) of gaseous CO2 measured at 1.1 atm pressure and 301 K is produced. H2SO4(aq) + CaCO3(s) → CO2(g) + CaSO4(s) + H2O(l)

14 years ago

How do i solve this half reaction with Mg(OH)2(s) --> Mg(s)? Complete and balance the displayed half reaction in basic aqueous solution taking into account the electrons. Mg(OH)2(s) → Mg(s)

14 years ago

Enter the balanced chemical equation including states that describes the electrochemical cell that is represented by the cell notation as shown. Pt(s) l H2O(l) l O2(g) l H+(aq) ll H+(aq), Cr2O72-(aq), Cr3+(aq) l Pt(s)

14 years ago

What ideas can you propose for the future of processor design? What do you think the limit of clock speed for a processor will be? How could a CPU communicate more quickly with memory? What could future cache designs look like? I've been looking in Google...

14 years ago

(2x(tothe2ndpower)-3x+4)-(3x(tothe2ndpower)-x+2= ????

14 years ago

if a man is a hetero zygote for a trait but the woman is homozygous recessive, what are the chances that their children will be homozygous dominant

14 years ago

A professor knows that in her class 37% of the students have passed an Algebra course, 29% have passed an English course, and 21% have passed both courses. If one student is selected at random from this class, find the probability that:

14 years ago

The sides and diagonal of the rectangle above are strictly increasing with time. At the instant when x=4 and y=3, dx/dt=dz/dt and dy/dt=k(dz/dt). What is the value of k at that instant. solved for z with pythagorean theorem and stuck at that step. z=5

14 years ago

The function f is twice differentiable, and the graph of f has no points of inflection. If f(6)+3, f'(6)=-1/2, and f"(6)=-2, which of th following could be the value of f(7). A.)2 B.)2.5 C.)2.9 D.)3 E.)4 the answer is A. but what are the steps to reach th...

14 years ago

jenny is 5'10" tall. the heights of the girls in the school are approximately normally distributed with a mean of 5'5" and a standard deviation of 2.6". What is the percentile of jenny's height?

14 years ago

Identify the study design best described by the scenarios or research questions presented below. Provide a two-sentence rationale for your answer. Choose from: • Ecologic • Cross-sectional • Case-control • Retrospective (Historical) Cohort • Prospective C...

14 years ago

How would you factor this? f(x)=x^3-2x^2-4x-4

14 years ago

what about this question: Determine the roots algebraically by factoring. a) x^3-8x^2-3x+90=0

14 years ago

I need help finding the derivative of this function: f(x)=(X^2+2)^4/5 Thanks in advance! Any help would be greatly appreciated!

13 years ago

how can you break apart arrays when you multiply by 3?

13 years ago

HOBr (aq) <----> H+ (aq) + OBr- (aq), Ka = 2.3 x 10^-9 Hypobromous acid, HOBr, is a weak acid that dissociates in water, as represented by the equation. (a) Calculate the value of [H+] in a solution of HOBr that has a pH of 4.95. Ans: 1.1 * 10^-5 M (b) Wr...

13 years ago

Hello, I have data here: tube # Contents Initial color (after 2 drops of universal indicator) Color after adding HCl Color after adding NaOH (after the HCl had been poured) 1 CO32-/HCO3- Dark purple Purple Purple 2 CO32-/HCO3- Dark purple -- -- 3 HCH3CO2/...

13 years ago

A 0.5224g sample of an unknown monoprotic acid was titrated with 0.0998M of NaOH. The equivalence point of the titration occurs at 23.82 mL. Determine the molar mass of the unknown acid.

13 years ago

A direct-current power supply of low voltage (less than 10 volts) has lost the markings that indicate which output terminal is positive and which is negative. A chemist suggests that the power supply terminals be connected to a pair of platinum electrodes...

13 years ago

Adding water to some chemicals can be dangerous because large amounts of heat are liberated. Which of the following does NOT liberate heat when water is added to it? KNO3 (the answer) NaOH Na CaO H2SO4 I guessed Na simply because it's the only one that's...

13 years ago

dev.physicslab. org/asp/nyregents/2003/January/part3.asp Why is the answer to #47 2 amperes? How do I get that?

13 years ago

For an ellipse, one focus is (0,0), one vertex is (2,0), and the eccentricity is 0.4. How do I find the equation for the ellipse? It seems like I have so little information!

13 years ago

What alkane effuses at 1/5 the rate of He

13 years ago

Provide a synthesis of the following aldehyde starting from ethylene. Show the reagents and products for each step. H2C=CH2 --> CH3-CH2-CH=O Try to be as clear as possible. Thanks!

13 years ago

Ben eats a bowl of rice as he walks across the San Francisco Bridge. When he is finished, he drops his empty bowl 67m down to the bay water. What speed does it hit the water with?

13 years ago

The Marshmellow man tromps along the streets of New York City with his blue sailor hat on. He tries to climb up a building to reach Ghostbusters and a gargoyle statue falls 326m to the street below. What height is the gargoyle when it reaches a velocity o...

13 years ago

A fiery ball of wood is loaded into a medieval catapult to be thrown into a castle. Unfortunately, the attacking heathens are not very smart and since geometry and physics were not studied in their time, they launched the ball straight up into the air. Th...

13 years ago

At the top of the Washington monument, a bird drops an acorn into the reflecting pool 169m below. If the acorn has a massof 1.0 kg, with what velocity would it hit the water?

13 years ago

An astronaut drops a golf ball to the surface of the moon from a height of 1.5m. The golf ball has a velocity of 2.24 m/s right before it lands on the moon (assume this height to be zero). What is acceleration due to gravity on the moon?

13 years ago

A tennis ball is dropped from 1.80 m above the ground. It rebounds to a height of 1.00 m (assume down to be negative). (a) With what velocity does it hit the ground? (b) With what velocity does it leave the ground? (c) If the tennis ball were in contact w...

13 years ago

An electron in a hydrogen atom relaxes to the n = 4 level, emitting light of 114 THz. What is the value of n for the level in which the electron originated? I am halfway through, but uncertain as to how to simplify the problem to completion. (6.63 x 10^-3...

12 years ago

For each of the bonds listed below use hybridized orbitals to classify the type of sigma bond that is formed between the two atoms. a) The sigma bond between boron and hydrogen in BH3 answer: sp^2 - p b) the sigma bond between S and fluoride in SF4. answe...

12 years ago

The region between the graphs of x=y^(2)and x=2y is rotated around the line y=2. The volume of the resulting solid is... I've tried this five times and no luck. Please help. I think my a=o and b=2. I would appreciate the help.

12 years ago

Evaluate the definite integral. dx/(x*sqrt(lnx)) from 1 to e^4 I'm having trouble figuring this out, I might be overthinking it. The way I've approached this is by using u substitution and letting u=lnx. I keep getting the wrong answer though. Help is app...

12 years ago

I need to find the integral of e^(2x)sin(3x) I used integration by parts and I let u=e^2x and dv=sin(3x) My final answer was (-3/8)(e^(2x))(cos(3x)) - (1/8)(e^(2x))(sin(3x)) but it's wrong. Please help!!

12 years ago

One of my homework problems deals with finding the change in entropy of the surroundings using the equation delta(S)= -delta(H)/T(temp.) The numbers given were T=263K and delta(H)fusion=6.0*10^(3) J/mol I know how to solve the problem, I just want to know...

12 years ago

I need help in solving this problem: A certain substance has a heat of vaporization of 42.46 kJ/mol. At what Kelvin temperature will the vapor pressure be 5.00 times higher than it was at 291 K? I know that I have to use the Clausius-Clapeyron equation, b...

12 years ago

I've been trying to solve the improper integral of ln(x)/sqrt(x) dx as a=1 and b=infinity I am required to solve for this question and according to my answer, it is divergent. However, my answer is infinity-4. Is it acceptable to say that infinity minus a...

12 years ago

There are 100 questions from an SAT test, and they are all multiple choice with possible answers of a,b,c,d,e. For each question, only one answer is correct, find the standard deviation for the numbers of correct answers for those who make random guesses...

11 years ago

I've been working on this problem for close to an hour now and keep getting very wrong numbers... The two objects with different mass (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in the figure are released from rest, with one object at a he...

11 years ago

I'm really confused on how to answer this question. Can someone help me to figure this out? Thank you A survey about the student government program at a school finds that of 245 students: -218 like the program -27 students think this program is unnecessar...

10 years ago

Answers

The following answers were posted by visitors named Confused.

Correction: B= than jumping instead of from jumping

18 years ago

Ok, I have the write answer which is C.. But why would it be right? The diff between C,D= semicolon

18 years ago

I see how it can be different from, but there are like 2 other sentences with different from

18 years ago

I understand why they are wrong, I just can't like figure out the rule.

18 years ago

Ok, I see now. Thank you!

18 years ago

Three samples of an unknown acid are titrated with 0.4901 M NaOH. The average equivalent weight of the acid using the data below is g/equiv ? the mass of unknown for trial 1 is 1.02, trial 2 is 0.522, trial 3 is 0.742 volume of NaOH in trial 1 is 27.72, t...

17 years ago

If 2 moles of electrons are required to oxidize 1 mole of unknown, what is the molarity of the unknown solution?? is the molarity reduce to half??

17 years ago

Delta H is positive, the reaction is endothermic therefore not spontaneous.

17 years ago

nvm i got it

17 years ago

You can't solve for t from that though can you? If you use quadratic equation its a negative sign under the root and you can't take the root of that. I'm confused:S

16 years ago

Thanks! how do u determine that they are both -7 though? Doesn't it have to equal 21? or doesn't that 21 matter?

16 years ago

I am not sure if I should have included 'One can say' in my conclusion. What do you think? If I don't include it then no it doesn't support the conclusion. Why do you think it wouldn't be considered weak?

16 years ago

KHP?

16 years ago

1- wear waterproof sun screen, cause it is bad for the ocean. 2-use firendly enviroment safe clean prodcts on boats. 3-Be careful of what prodcts you buy at home cause that all will eventaully go back into the ocean. 4-Do not buy coral, cause it is taken...

16 years ago

Arab describes an ethinicty, like saying someone is hispanic or something. Muslim means that they follow the Islamic religion

16 years ago

Sorry, Yes the correct equation is -t^2 + 12t + 54

15 years ago

i don't understand where k1 k2 t1 t2 come from... :(

15 years ago

i keep getting 32.3005 for T, if you have worked it out did you use 8.314472 for R, also is -126kj/mol -12600j/mol?

15 years ago

ok the answer i got now was 50 degrees celcius

15 years ago

Also other information Answer they gave: 0.000148571182 Molsr Mass: PbSO4 303.26

15 years ago

so... k=Ae^(Ea/RT) Do I set it up as ratios? I.e. 0.0000100s-1=Ae^(-Ea/R * 636) ____________________________ 0.000479s-1=Ae^(-Ea/R * 700) A cancels out ...and then solve from there?

14 years ago

oooh, righteous! Thanks so much I appreciate the time you take out to help!

14 years ago

Okay so the problem I had with this is like...I did't understand that when it was written say on the left of the double vertical line how you know H2O --> O2 + H+ will it always be written in the order of how you write the reaction? or like could you also...

14 years ago

also shouldn't it be the coefficient of H^+ in the second equation be 14?

14 years ago

what about this question: Determine the roots algebraically by factoring. a) x^3-8x^2-3x+90=0

14 years ago

Hi Dr. Bob, When I do that, I get 11.30 as the pH, although I don't think that's it. Did I miss something?

13 years ago

Thanks so much! I get it now!

13 years ago

I think I get it, but just to clarify... Because we have a power supply, we know we have an electrolytic cell, which needs energy from an external source. For electrolytic cells, cathodes are considered the negative electrodes. If K+ and H20 go to the cat...

13 years ago

Thanks for the table! It actually is in my text, but I am taking the AP test soon, so I won't have a table like that. I can only answer the question based on the periodic table and that's it. Is there anything else I can use to at least eliminate the othe...

13 years ago

Thank you!

13 years ago

Hi Dr. Bob! I actually cleared it all up, but thank you!

13 years ago

I get it now! However, I think you made a mistake with .16=1-b^2/4. It should be turned into .64=1-b^2, and then b^2=0.36. Then x^2/4 + y^2/0.36=1.

13 years ago

On an extra note. I've done a lot of the practice problems and gotten those wrong... I don't know why I keep getting this wrong... But my answers for part a have been fairly close it seems like I keep getting my y-speed when the engine fails wrong by abou...

12 years ago

I am looking for an answer to this very same question with a different dollar amount "If the average adult produces $70,000 of output per year, how much output is lost annually as a result of adult deaths from secondhand smoke?" according to the news/stud...

12 years ago

Never mind! I figured it out!

12 years ago

Figured it out. Turns out my b=4 not 2.

12 years ago

Thank you so much for showing the steps, I really appreciate the help! (:

12 years ago

Awesome, thank you so much for the help!

12 years ago

Thank you!

12 years ago

How do you draw a simple particle diagram?

12 years ago

im stuck on one of the questions but I can check my answers with yours if they are correct are they correct?

10 years ago

1800 N/C

9 years ago

Checking before I submit but conflict in all answers

8 years ago

1.c 2.a 3.b 4.b 5.a,c 6.c 7.d 8.c 9.a 10.d 11.b 12. Your on your own

Help please is correct got an A on it.

7 years ago

There are like 4 different tests so they change up the questions

7 years ago

All correct C C C B C

Ohhh! Now I understand! Thank you so much!

For fun tions test 1. D 2. D 3 D 4. B 5. A 6. C 7. D 8. C 9. D 10 C 11. C 12. A 13.C 14. D 15. D 16. D These are all correct

7 years ago

Roasted toaster is correct

So is it rational or irrational??

7 years ago

1.A (Claim Ind.) 2.C (#A.Immagrants) 3.A,B,D 4.B (Anahuac) 5.C (1824)

6 years ago

yeah what are the answers

6 years ago

Hey everyone why did you all just goof off when someone asked a question I am confused......?.....

6 years ago

wut

6 years ago

K so what are your c's in stuff

5 years ago

Ohh ok thank you

4 years ago

Do you know how to do this question using the calculator tho? I don't know what values to put for P/V and C/Y and N=

4 years ago

I need help, and why is that person talking about bolagney?

4 years ago

It's courage.

4 years ago

Update guys, it's 5 :)

4 years ago

WHAT IS THE ANSWER FOR THE AREA OF THE DAM CIRCLE!!! Show work plz if u give then answer!

4 years ago

Started this thread in 2016 and 5 years later NOONE knows the answer?!

4 years ago

I ma on Unit 4 Lesson 11. Tests are hard!!!!!!!!!!!!!!!!!!!!!!!

4 years ago

I have 21 questions please put answers for that

3 years ago

Uhh doing the test now but it’s different than your guyss 😔

3 years ago

I'm amazed by how quickly this was answered and am wary of if this is a bot and if a follow-up question will be answered (but regardless this is helpful! so uhm, thanks!), but, is the subject not already stated with the "Me" in "Me disgustan ver películas...

2 years ago

It is definitely a bot, forgive my momentary lapse in judgement of almost believing it's a person (the answer is so detailed...) but if anyone else sees this and can elaborate that would be much appreciated!

2 years ago