Calculus (Answer Check)

87,112 results, page 26


Suppose that the machinery in question costs $104000 and earns profit at a continuous rate of $69000 per year. Use an interest rate of 9% per year, compounded continuously. When is the present value of the profit equal to the cost of the machinery? Round your answer to the ...

Chemistry(Please check)

. Ksp for Fe(IO3)3 is 10-14. Two solutions, one being iron(III) nitrate and the other being sodium iodate, were mixed. At the instant of mixing, [Fe3+] = 10-4M and [IO3-] = 10-5M. What happens? My answer is that a precipitate forms because Qsp > Ksp. Would you agree? ...


Can someone check my answer for me... 1)Suppose a piece of lead with a mass of 14.9 g at a temperature of 92.5 degrees is dropped into an insulated container of water. The mass of water is 165 g and its temperature before adding the lead is 20.0 degrees. What is the final ...


t the library, the quickest way to locate varied, reliable information for your research paper is to      A. check the encyclopedias. B. search the card catalog for related titles. C. ask the reference librarian. D. check the Readers' Guide.

Language Arts 6A

Can you check my answers? 1. Which of the following text aids or features is used to organize information within an informational text? A)diagram B)highlighted vocabulary C)caption D)subheading My answer is D. 11. Which of these sentences contains an error in verb usage? A)I ...

Calculus II

I need to find if the summation of (n^4)/(n^10 + 1) is convergent or divergent from n=1 to infinity. I tried splitting it up into two sums, one being 1/n^6, which would be convergent because p=6>1, and then the other being n^4, but I'm not sure how to know if this is ...


1. I got out of my car to check the engine. 2. I got off my car to check the engine. (Are both the same? In #2, what is the part of speech of 'off'? Is 'off' an adverb or a preposition?) 3. I got out of my car to check the engine. 4. I got out of my car to check out the engine...

math check please

Find the median of the following set of numbers 45,21,54,22,65,61 Answer 49 1/2 2. find the mean and the median of the set of grades 95,75,76,86,96,71,68,81,95,76,69,82,93,88,94 Answer mean 83 median 82 3. find the mode of the following numbers 11,10,6,11,12 Answer 11 4. Find ...


Plagiarism is borrowing wrring from other people or literary theft. I said literay theft. Please check my answer tanks :)


Please check my answer thanks :) True of False A problem with lumbar plexus may cause pain in the posterior part of the thigh. I said False


please check my answer thanks True or False Fungi is a type of route that a microorganism can travel from one place to another I said True


Check whether the ordered pair is a solution to the equation x =3/4; (1/2, 3/4). Please show me step by step how you came up with this answer because I am really confused.

pre algebra

When twice a number is decreased by 8, the result is the number increased by 7. How would you solve it and check answer into the original problem?

Trig- Check my answer Please

Find the reference angle for -144 degrees. I'm coming up with 504 degrees, but I think I'm missing a step.

spanish/check please

Mis hermanos y yo los ( oimons/ oyeron) ______ hablar unos minutos en la cocina. answer :oyeron

Simplify (Another Question/problem) 3

Simplify. (27a^(-6) )^(-2/3) I got 1/(9a^4 )as my answer, but can someone again please check this. I will appreciate it. I am just unsure if it is correct or not.

algebra/check my answer

Three fair coins are tossed. What is the probability that at least one is a head? (Enter the probability as a fraction.) I came up with 7/8 Thank you


1. The number 1,2 and 3 are the nucleotides of the anticodon for the mRNA codon 5' AUG 3'. Thus in order of 1, 2 and 3 the sequence of this anitocodon is...... a. UTG b. ATG c. GUA d. CAU I believe the answer is "d", Please check

Law and Ehtics in Med

Please check my answer thanks :) Which of the following is most pertinent in a legal or courtroom context? 1. Confidentiallity 2. Etiquette 3. Pt's expectaion of privacy 4. Privileged communication I picked 4

Assistance Dogs

Please check my answer thanks :) . Which of the following is not an important job for a puppy foster family to teach? A. Socialization B. Housetraining C. Appropriate chewing D. Play bowing I think it is D

Vocabulary- check my answer

The shirt that Jack stole was worth just three dollars, so he was only charged with a _________. a) ruffian b)misdemeanor.... Is this right??? c)extortion d)condemnation PLEASE HELP


If someone could check my answer: Dynamic lows are accentuated due to the fact that they rotate in the same direction as the Earth's surface (Cyclonic flow). This is called-----CORIOLIS EFFECT....Thanks

Cellular Anatomy

The function of smooth muscle is to provide? A. cushioning around the joints B.rapid contractions C.skeletal support D. involuntary movement Can some one check my answer it is (D)

check my science hw please.

25. All of the following factors affect an area's biodiversity EXCEPT A. areas B.number of endangered species C. climate D. diversity of niches. I got C for my answer.

Math (please check my answer!!)

What other information must be given in order to be able to prove the two triangles congruent by ASA? i.imgsafe(.)org/c64c59dad9.jpg 1. T=S 2. P=S 3. P=R<<< 4. PQ=QR


The concentration of a certain drug (in mg/cm3) in a patient's bloodstream t hr after injection is given by the following function. C(t) = (0.6 t)/(t^2 + 5) Evaluate the limit. (If an answer does not exist, enter DNE.)

Practice Exam Calculus

f(x) = 6sqrt{x}- 9x n the interval [1,9]. f(c)=f(9)-f(1)/9-(1)=? Verify that the conclusion of the Mean Value Theorem holds by computing Now find,c in (1, 9) so that f'(c) equals the answer you just found. c=?


Find the differential dy of the given function. y=sec^2x/(x^2+1) My answer was [tanx(x^2+1)-2sec^2x]dx/(x^2+1)^2 My friend (who's a lot smarter than me) got something wayyy different, so I'm not sure if I'm doing this wrong...?


h(x) = x+cos(ax) is a family of functions where a is a positive constant such that 0<a<4. Which values of a make h(x) strictly decreasing? Justify your answer. I can't figure this out and help would be appreciated. Thanks in advance!


2. Write an equation in slope-intercept form of a line with the given parametric equations. x = 9t + 2 y = 2t – 2 answer choices: a)y=(2/9)x - (22/9) b)y=(22/9)x + (2/9) c) y=(9/2)x - (9/22) d) y=(2/5)x + (2/3) If you could show some work, because I'm pretty confused. Thank ...

Calculus (Sequences)

Hello, here is a picture of the question I am trying to solve, I believe the answer to be C, but I would just like some confirmation/correction. goo. gl/gWfhVn

Continuity Calculus Help

The given function is defined for all x > 0 except at x = 8. Find the value that should be assigned to f(8), if any, to guarantee that f will be continuous at 8. (If an answer does not exist, enter DNE.) f(x)= Sqrt( x^2-64/x-8)


3) The table below gives selected values for the function f(x). Use a trapezoidal estimation, with 6 trapezoids to approximate the value of int f(x) dx from 1 to 2 . Give 3 decimal places for your answer. x 1 1.1 1.2 1.5 1.7 1.9 2.0 f(x) 1 2 4 6 7 9 10


For an object whose velocity in ft/sec is given by v(t) = −2t^2 + 4, what is its distance travelled, in feet, on the interval t = 0 to t = 2 secs? I think the answer is 2.667 but I am not one hundred percent sure.


The function f(x) is defined as f(x) = -2(x+2)(x-1)^2 = -2(x^3 -3x + 2) on the open interval (-3,3). 1. Determine the x-coordinate of the absolute minimum of f(x) in the open interval (-3,3). Justify your answer. 2. Find all values of x for which f(x) is concave down. Justify ...


Let f(x)=−2 x^3 − 3 x^2 − 2 x − 10. Find the interval where f is concave up. I Answer: < x < Find the interval where f is concave down. Answer: < x < Find the inflection point of f. Answer: x=


Could someone please check my work on the following problems? I want to be sure that I'm doing them correctly; i'm just required to find the derivatives and then simplify. g(t)= t/sint g'(t)=1*sint-cost*t/(sint)^2 g'(t)=sint-cost*t/(sint)^2 y=ln(e^ax) y'=1/e^ax*e^x*a and i'm ...

Math Help and check

The weights of ripe watermelons grown at Mr. Smith's farm are normally distributed with a standard deviation of 2 lb. Find the mean weight of Mr. Smith's ripe watermelons if only 5% weigh less than 18 lb. (Give your answer correct to one decimal place.) Incorrect: Your answer ...

Algebra-Mathmate or Reiny or Dr. Bob, please check

I have two short questions which I think I know the answer-could you please check? If I write log(b)x - 2log(b)y as a single logarithm it would be log(b) x/y^2, correct? If not please help and Is the function f(x) = 1/x a exponential function -I think it would be because it ...

Chemistry - Answer Check

Gaseous hydrogen and iodine are placed in a closed container at 425 degrees Celsius. The reactants react to produce the gaseous compound hydrogen iodide, which partially decomposes back into hydrogen and iodine gas as shown below. H2 (g) + I2 (g) <----> 2HI (g) You are ...

Pre-Calculus - Reiny

Reiny you helped me with this logarithm yesterday: How did you write it out as log2 ( √A / B^3 ) Laws of logarithms combine, write as a single logarithm Need help on this question please, Im stuck, don't know where to go abouts from here: I did it on paint and uploaded ...


Hi! Thanks for checking my question out! ____ 2. Which of the following takes place during a redox reaction? (1 point) a) Electrons are gained only. b) Electrons are lost only. c) Electrons are both gained and lost. d) Electrons are neither gained nor lost. My Answer: C Could ...


***Check Answers Plz*** 1)suppose the total momentum of two masses before a collision is 100 kg m/s.what is the total momentum of the two masses after they collide? a~0 kg m/s b~50 kg m/s c~100 kg m/s****(My answer) d~200 kg m/s 2)What is the momentum of a 20.0 kg scooter ...


For the parametric curve defined x=2t^3-12t^2-30t+9 and y=t^2-4t+6 ..find dy/dx and then where is the tangent to the curve vertical (give the cartesian coordiantes of the points. and find the tang. to the curve horizontal dx/dt= 6t^2-24t-30 dy/dt= 2t-4 dy/dx= (t-2)/(3t^2-12t-...

drwl / bobpursley please check

I had posted three questions at 1:48pm, 2:40pm and 2:41pm and I am having problems with them. Can you please check them for me. Thanks! Repost if you are not satisified with the responses.

English Grammar check

Can you please check this for grammar thank you!! Thank you, for all that you have done and continue to do for me.It means the world to me, that you haven't given up on trying to help me. More importantly, thank you for always believing in me.


Marilyn got a birthday check from her grandmother. She spent half of it on a soccer ball, and then earned $20 mowing a neighbors lawn. She now has $38. How much was her birthday check? A. 38/2=c+20 B. C+38=20/2 C. 2c=38-20 D. C/2+20=38


I am working on my French homework (direct/indirect) and would like to check my answers and make sure I am on the right track. I am having difficulty with the following: Options: Me/m’, te/t’, nous, vous, le, la, les, lui, leur, y, en A. Je vais au café prendre des ...


According to the US Census, the world population P, in billions, is approximately P=6.342e^(0.011t); where t is in years since January 1, 2004. At what rate was the world's population increasing on January 1, 2005? Give your answer in millions per year. Is the answer 6412 ...


Answer the following questions for the function f(x) = sin^2(x/3) defined on the interval [ -9.424778, 2.356194]. Rememer that you can enter pi for \pi as part of your answer. a.) f(x) is concave down on the interval . b.) A global minimum for this function occurs at . c.) A ...


Consider the function below. f(x) = [1-(4/x)]^x (a) Use a graph to estimate the value of the limit of f(x) as x approaches infinity. (Round the answer to two decimal places.) (b) Use a table of values of f(x) to estimate the limit. (Round the answer to four decimal places.)


A cylinder has a radius of 4x + 2 and a height of 5x — 4. Which polynomial in standard form best describes the total volume of the cylinder? A.80pix^3+144pix^2+84pix+16pi B.20pix^2+26pix+8pi **** C.80pix^3+144pix^2+84pix-16pi D.400pix^4+1040pix^3+996ix^3+416pix+64pi My ...

biology can someone check

Decide if each of the following statements is true.If it is not rewrite the parentheses part to make it true. 1) Scientific methods include observation,(forming a hypothesis, and experiment). ans: false ;answer questions; solve problems 2)A statement that can be tested and ...


What vital right did the Spanish allow the Western farmers? Answer: It was that Spain allowed Americans to travel on the lower Mississippi to New Orleans and to ship their goods. "cORRECT right??" mmhmm Can you help me out with this one???? Did you ever find my work yet? I ...


An inspector of weights and measures uses a special set of weights to check the accuracy of scales. Various weights are placed on a scale to check the accuracy of any amount from 1 oz. to 15 oz. What is the fewest number of weights the inspector needs? What weights are needed ...


OK trying again. For what (numerical) of the constant "c" is the function f(x)= {x^2-cx if x is greater than -1 {cx^3+x if x is less than or equal to -1 continuous on (- infinity, +infinity)?(Justify answer!)


Given the function f(x) = (x-2)/(x^3-8), what value should be assigned to f(x) to make the function continuous at x=2? Please walk me through this. I have the answer but do not know how to get it.


V(h) = pie/3(R^2h-h^3) take the derivative with respect to h. using the chain rule I got: V'(h) = pie/3(2Rh+R^2-3h^2) but this is not the correct answer. what did I do wrong?


The integral from 1 to 5 of 1/x^2*(times) the square root of 1+(1/x)dx. i've had tried this problem over and over again and cannot get the correct answer. Please help. thanks


Find all numbers b such that the average value of f(x)=2+6x−3x^2 on the interval [0,b] is equal to 3. Give your answer as a list of numbers, e.g., {1,2,3}.


Find all values of x in the interval [0, 2π] that satisfy the inequality. (Enter your answer using interval notation.) 14 cos(x) + 7 > 0


pleeeeeeas help meeee i used an online integral calculator and got an answer which says -1/2cot(x^2) but i don't know how to get there. the problem is "integral{xcsc^2(x^2)}

Calculus Related

tinyurl[dot]com/osguqrd Replace [dot] with a . Please provide an answer to the question in the link above.

Calculus Help

Use f(x)= 1/(square root(x)+1) to answer the following; -- Use the difference quotient f'(x)=lim z->x (f(x)-f(z))/ (x-z) to find f'(x)! Please show steps!!! Thank you!!!


Find the derivative of the following function showing your work and fully simplifying your answer. STEP BY STEP PLEASE!!! f(x)=(8x-3)^5/(6x+7)^12 THANK YOU SO MUCH!!!


Lines tangent to the curve y-1=2x^2+3x pass through the point A(2,-1). Find the x-coordinate(s) of the point(s) of tangency. The answer is 2+2^1/2, 2-2^1/2, I just don't know how to get there. Please help! Thank you!

Calculus 1

Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) f(x) = x^(5)e^(-6x)


Estimate the area under the curve f(x) = x2 + 1 from x = 0 to x = 6 by using three circumscribed (over the curve) rectangles. Answer to the nearest integer.


Given the area is in the first quadrant bounded by y²=x, the line x=4 and the 0X What is the volume generated when this area is revolved about the 0X? the answer is 25.13 but I don't know how. help me please


Find inverse equation of y= 3e^(x-1)^5 Answer I got is (ln(x/3))^(1/5) +5 =y But I think it's wrong because the domain and range is really different from the original equation


Determine whether the sequence converges or diverges. If it converges, find the limit. (If an answer does not exist, enter DNE.) An = cos(n/8)

Calculus 2

A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 for g and 3.14 for π. If you enter your answer in scientific notation, round the decimal value to two decimal places. Use equivalent rounding if you do not enter your answer in ...


Consider a differentiable functionf having domain all positive real numbers, and for which it is known that f'(x)=(4-x)^-3 for x.0 a. find the x-coordinate of the critical point f. DEtermine whether the point is a relative maximum or minomum, or neither for the fxn f. justify ...


Can someone please check my work for me? Write an equation of the line satisfying the given conditions. 9) Intersects the line y = 2 + 3x at infinitely many places. 9) A) y = -3x + 2 B) y = 2x + 3 C) y = -1/3x + 2 D) y = 2 + 3x Is the answer A Use the discriminant to determine...


CHECK MY ANSWERS?? 1) the key signature does not A. tell which sharps and flats are in the key -----my answer B. appear in every staff in a musical composition C. explain weather the music is major or minor D. appear just after the clef in each line of music 2) a short musical...


Apply the concepts of calculus (limits and derivatives) to describe the graph y = sec(x). Include a quality graph


Can someone check if these are right: Tell the reaction rate 1.)Question: one antacid tablet is placed in a glass of cold water, while another table is placed in a glass of hot water. Answer:TEMPERATURE 2.) Question: a mixture of baking powder, flour, sugar, and eggs is placed...


Could you please check these thanks. Directions match each item with the correct statement. Not all terms are USED. Here are the words to fill in the blanks. business planning demand curve complements elastic demand expensive goods demand marginal utility expectations market ...


Please check, if there is something wrong please explain what I did wrong. Thank you! Calculate the d^2y/dx^2. y= e^-x + e^x y' = e^x - e^-x y'' = e^x + e^-x Find the x-coordinace of all critical points of the given function. determine whether each critical point is a relative...


Posted by MG on Wednesday, March 26, 2014 at 6:54pm. The hands of a clock in some tower are 4.5m and 2m in length. How fast is the distance between the tips of the hands changing at 9:00? (Hint: Use the law of cosines) The distance between the tips of the hands is changing at ...

Physics waves- check answers please

1. In a standing wave, the medium at the tip of a loop is a) showing destructive interference b) not moving c) at the original amplitude of the wave d) showing constructive interference my answer: b 2. If a motorcycle is travelling toward an observer the frequency the observer...

Physics waves- check answers please

1. In a standing wave, the medium at the tip of a loop is a) showing destructive interference b) not moving c) at the original amplitude of the wave d) showing constructive interference my answer: b 2. If a motorcycle is travelling toward an observer the frequency the observer...

Social studies

Could you please check these other sets of terms. Here are the terms: scarcity cost benefit analysis marginal revenue needs incentives economy opportunity cost variable costs capitalism marginal cost food, clothing,shelter, and other things required for survival. Answer: needs...


Could you please check these thanks Directions: Un peu de culture: Answer in the affrimative using a pronoun follow the model -Tu ne connais pas ce musée -Si, je le connais Part 1 1. -Te ne connais pasa cet acteur? Answer: -Si, je le connais. 2. -Tu ne connais pas cette ...

Calculus II

Hello! I have a problem on volumes but I am having trouble visualizing the object. y=ln(x), y=1, y=2, x=0, about the y-axis For the graph, I graphed y=ln(x), then I have from 1 to 2. Is this one with a washer where I have integral fom 1 to 2 of pi*ln(x)^2 - pi* something? I'm ...


estimate the absolute maximum and minimum values of f if any, on the stated interval, and then use calculus methods to find the exact values: f(x)=10ln(x^2+1)-8x; [0,3]


Verify the identity: arctanx + arctan(1/x)=∏/2 using calculus theory. (Hint: Differentiate the left hand side of the identity)


I need help with these two review calculus problems for my final exam. What is the derivative of a). (5x^2+9x-7)^5 b). Lne^x^3 For a. I got 50x+45(5x^5+9x-7)^4 For b. I got 3x^2 Can you verify please?

math,correction please..

(x)/(x-2) - (x+1)/(x) = (8)/(x^2-2x) I keep getting x = 6 can someone show me how you guys are getting x = -10 The lowest commond denominator is x(x-2) x/x *(x)/(x-2) - (x+1)/(x) *(x-2)/(x-2)=(8)/x(x-2) multiplying both sides by the common denominator.. x^2 -(x^2-1x -2)=8 x+2=...


A rectangular wire loop with current i=200mA, width W=20cm and length L=50cm is placed in a uniform magnetic field B=7T as shown. The normal to the loop, represented by the dashed line, is θ=20degrees from the magnetic field direction. #3A (6 points possible) What is the ...

Computer Programming

Hello, Any help on the following problem would be greatly appreciated. The assignment is done with .java in eclipse. I have a class and a form with a Jlist, 2 text fields to enter the check amount and the ending Balance and a calulate button. I have some aspects working, but ...

Written Communication

At the library, the quickest way to locate varied, reliable information for your research paper is to A. check the encyclopedias. B. search the card catalog for related titles. C. ask the reference librarian. D. check the Readers' Guide.


Please check my answer thanks :) Sue's dog had flees. This sentence is a homonym used correctly True False. I said True

Law and Ehtics in med

please check my answer thanks :) Privileged communication is pertinent in a legal or court context. True or False I said True

medical reimbursement methodologies

please check my answer thanks :) True or False The committe on social welfare implements fee schedules I said True

Anatomy and Physiology

Please check my answer thanks True or False Keratinized cells are found in the body by the subcutaneous layer of the skin I said True

Science 8th grade

please check my answer thanks True or false Blood gains oxygen when it passes through the liver I said True

Science 8th grade

please check my answer thanks True or False Blood gains oxygen when it passes through the liver I said true

Health/ Basic Clinical Procedures

please check my answer thanks True or False The Fowler's position is used for an exam of the abdomen I said False


please check my answer According to JCAHO standards, the delinquency rate for incomplete medical records should be no greater than 20% I said True


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