# Calculus (Answer Check)

88,560 results, page 33

1. ### Business 101

Please check my work. 1.The employees of Abs “R” Us, which includes 12 fitness parlors in and around the metro area, feel they can improve the performance of the company. They decide to pool their resources to purchase the company. This would be called a blank buyout. A....
2. ### chem - check my answers?

i already posted this but i tried to solve it on my own can you check at the end of this paragraph? The study of kinetics group 1: Temp: 12.6 C T(K): 12.6+273= 285.6 1/T(K): 3.50X10^-3 this one is the x value Time: 816 sec Rate ®: 7.66 x10^-6 LnR: -11.8 this is the y value ...
3. ### Calculus

Find the relative extrema, if any, of the function. Use the second derivative test, if applicable. (If an answer does not exist, enter DNE.) f(t) = 7 t + 3/t relative maximum (x, y) = relative minimum (x, y) =
4. ### math

Shorten fraction: (x^2+2x)/(4x+8)= ? and reduce: (8a^3*b*a^-2)/(2b)^2= ? First. In the numerator, factor out an x. In the denominator, factor out a 4. this will leave a common factor that can be divided out. Second.change the numerator to 8ab. Check that to see if it is right...
5. ### Algebra

Check my answer please! A tower of blocks has 1 block in the top row, 3 blocks in the next row, 5 blocks in the next row, and so on. there are six rows in all. how many blocks are in the tower? 11 blocks 47 blocks 36 blocks *MY ANSWER* 49 blocks
6. ### English

Could you check these few sentences n travelling. Thank you 1) Go to the check-in desk. Put your luggage on the conveyor belt for it to be weighed. 2) Once you get your boarding card, go through security. Put any metal thing in a basket for it to be scanned. Collect your ...
7. ### English Check answer

The birds "chirped" loudly every morning before sunrise. (1 point) action verb (THIS ONE) helping verb linking verb none of the above
8. ### Calculus 1

Consider the following. B(x) = 3x^(2/3) − x (a) Find the interval of increase.(Enter your answer using interval notation.) Find the interval of decrease. (Enter your answer using interval notation.) (b) Find the local maximum value(s).(Enter your answers as a comma-...
9. ### chemistry

Can somebody please check my answer for this one? Calculate the number of atoms for the following: 2 mol Na atoms I got 1.2*10^24 Correct. twice avagradro's number. Thank you!

Amy bought a computer for a total of \$676.24 In the state where she lives the sales tax is 7% What is the amount of her sales tax ? I got \$44.24
11. ### sensory abilites of the dog

please check my answer thanks A dog's ability to smell can be disturbed by problems with the A. ears B. teeth C eyes D tongue I said teeth (b)
12. ### dog behavior

Please check my answer thanks True or False Robert Rescorla studied the effects of rewarding a dog for not jumping on people I said False
13. ### math

Could someone check my answer to the following question? Find the other end point given the endpoint of (7,7) and midpoint of (0,0). the other endpoint would be (-7,-7)right?
14. ### Chem

Can u guys check my answer?? Question: convert 24 grams of ice at -10 degrees Celsius to water at 45 degrees Celsius. I got q= 13022 joules Is that correct?
15. ### Algebra

I think this is a easy trick question, so I probably know the answer but I just wanted to double check. What is the domain and range of the function f(x) = 3^x Find the f^-1 and its domain and range? Thanks for your help.
16. ### Converse of the Pythagorean Theorem

Can you please help me and my grandson? It says: The length of the sides of the triangle are 5m, 6m, and 7m. Is the triangle acute, right, obtuse? How can I check my answer to see if it was right?
17. ### drwls please check

Can you please check my physics posts. Thanks!
18. ### Spanish Check??

Check my spanish work on page 2 please? Anyone?
19. ### math help!

Hi! How may you check 2+3w=12+2w to equal each other and check out equal
20. ### math help!

Hi! How may you check 2+3w=12+2w to equal each other and check out equal
21. ### Calculus

Match the rule with the title: ____ 3. d/dx [f(x)/g(x) ]=(g(x) f^' (x)-f(x) g^' (x))/[g(x)]^2 ____ 4. d/dx [f(g(x))]=f^' (g(x))∙g'(x) ____ 5. d/dx [f(x)∙g(x)]= f(x) g^' (x)+g(x) f^' (x) ____ 6.d/dx [x]=1 ____ 7. d/dx [f(x)+g(x)]= f^' (x)+g^' (x) or d/dx [f(x)+g(x...
22. ### U.S History DBQ (Pls check my answer)

Document 2 - As the woman suffrage movement gained momentum, Booker T. Washington issued the following statement to the New York Times: I am in favor of every measure that will give to woman, the opportunity to develop to the highest possible extent, her moral, intellectual, ...
23. ### pre algebra answer check

The probability that you will win a contest is 76%. What is the probability that you will lose the contest? 24%
24. ### Health

When conmparing the flow of lymph in the lymphatic system with the flow of blood in the circulatory system. It can be said that the Lymphatic system also A. uses a pump B. contains fluid that travels in only one direction C.Uses valves to prevent baclward flow D. contains ...
25. ### Algebra 2(check pt 4)

1)Cramer's Rule is used to solve the system of equations:3m-5n=12,4m+7n=-5 Which determinant represents the numerator for n? answer=[12 -5] [-5 7] 2)Cramer's Rule is used to solve the system of equations:3x-y+2z=17,4x+2y-3z=10,and 2x+5y-9z=-6 Which determinant represents the ...
26. ### trigonometry (repost) Mathmate

I want to start by saying thank you . You have no idea how much u have helped me understand logarithms, even better then the books i have (it poorly explains the subject of trigonometry let alone logarithms and antilog). Your last explanation was very clear and i even ...
27. ### chemistry lab

Here are 2 questions I worked out, but need them checked. Also, can't get answer to another question correct unless question 1 is correct. Would you check the first 2 and help me with the third? 1) What is the pH of a 0.05 M solution of TRIS acid (pka = 8.3)? My answer: I used...
28. ### pre-calculus

solve for z writing the answer in polar form: #1 z=(3,115 degrees)*(4,290 degrees) #2 (8,50 degrees)* z=(6,172 degrees)
29. ### Calculus

If the tolerance on the volume of a cube is a 2% error then what should the tolerance be fore each side? So what i did was V=x^3 dV = 3x^2 dx dV/V = 2% What should I do next? the answer is 2/3% but I don't know how it works. Thanks.
30. ### pre-calculus

convert the numbers to polar form and then divide.leave the answer in polar form. 10-10i/3root3+3i
31. ### Calculus

If 12x − 52 ≤ f(x) ≤ x2 + 4x − 36 determine lim x→ 4 f(x) = What theorem did you use to arrive at your answer?
32. ### Calculus

Simplify. State the nonpermissible values. 4a^2-1/4a^2-16*2-a/2a-1 This is what I did to try and solve it out: (2a+1)(2a-1)/(2a+4)(2a-4)*2-a/(2a-1) I cancelled out the (2a-1)'s and don't get how to solve. I'm supposed to get the answer : -2a-1/4(a+2) But I don't get how to get...
33. ### Calculus

Please verify the answers~ Thank you! 1. Which of the following is the x-intercept of the plane 2x-4z+1=0? a) P(2,0,-4) b) P(0,0,0) c) P(-1/2,0,0) d) P(0,0,1/4) Answer is C. 2. Which of the following is not a direction vector for the plane 3x-2y-z+4=0? a) v(3,-2,-1) b) v(0,-2,...
34. ### Calculus

Find the absolute maximum value and the absolute minimum value, if any, of the function. (If an answer does not exist, enter DNE.) f(x) = x^3 + 3 x^2 - 1 on [-3, 1]
35. ### verbals: gerunds answer check

sorry for the repetitive questions! otherwise thank you for taking the time to check my answers. Underline the gerund, some do not have a gerund if so write ''no gerund.'' 1. Sketching is fun for me. Sketching - Subject 2. Marya exercises every day by swimming. Swimming - ...
36. ### math,correction

can someone check these for me please.... problem#4 Directions: Factor each polynomial completely by factoring out any common factors and then factor by grouping. Do not combine like terms. 3a^3+3ab^2+2a^2b+2b^3 My answer: (a^2+b^2)(3a+2b) you are correct
37. ### physics

The fundamental frequency of a string fixed at both ends is 375 Hz. How long does it take for a wave to travel the length of this string? Please check my answer Solution: f=v/2L v=2Lf t=1/2f=l/v 1/2(375hz)= .0013 sec
38. ### English

please check my answer thanks :) What is this sentence missing and where ? One day my dad and his brother stop me if you've heard this story started on what they thought would be an uneventful drive to work. I thinks it's missing commas
39. ### Law

Which discovery tool would be especially appropriate to use against a plaintiff claiming physical injuries that the defendant believes are being faked please check my answer thanks :) a request for physical examination
40. ### dog behavior

please check my answer thanks Which of the following activites seems to be innate for dogs ? 1.Demonstrating gaze alteration 2. submitting to its owner 3. sending intraspecific signals 4. sending interspecific singals I say # 1
41. ### Health/ Basic Clinical Procedures

please check my answer thanks An objective sign is one that A can be observed by another person B precedes a disease C is felt by the patient and can not be obsserved by another person D causes the pt the most trouble I picked A
42. ### Health/ Basic Clinical Procedures

please check my answer True or False The medical assistant measured the circumference of the infant's head the method of the exam has occurred is called observation ? I said false
43. ### dog behavior repost

please check my answer again thanks Pupillary constiction in the presence of bright light is an example of what reponse ? A active tropic B passive tropic C unconditioned D conditioned I now say it's C
44. ### Dogs Hunting Training

Please check my answer thank you :) True or False AKC Retriever field Derby stakes sre open to Retrievers younger than two years of age I said True
45. ### Literacy

Use one of the sources available in the Almanacs and Yearbooks section to identify the approximate time of sunrise in Anchorage, Alaska, on December 25, 2015. (Hint: Check the source's Astronomy section.) A. 10:15 A.M. B. 11:30 A.M. C. 8:10 A.M. D. 9:45 A.M. my answer is A
46. ### Physics(Please check)

A 5-kg ball is thrown straight up in the air with an initial speed of 24m/s. After its release and before it hits the ground when is the ball in free fall? My answer is at all times. Is this correct? Thank you.
47. ### math check

Consider a normal population with ì = 49 and ó = 6. Calculate the z-score for an x of 44.2 from a sample of size 22. (Give your answer correct to two decimal places.) 3.75 is what I got.. and I have only one more try on this one.
48. ### Math (please check)

Compute the indicated derivative. d/dt [ ( t^2 + t^0.5 ) ( t^0.5 - t^-0.5 ) ] |t=1 I took the f and g prime then I used the quotient rule my final answer came out to 3t^1.5 - 1.5t^0.5 + t + 0.5t^-1 then I plugged 1 in for t and got 5.196 Please let me know if this is right, if...
49. ### english

Please check my answer because i don't know for Sure Which pronoun or pronouns correctly complete the sentence? Everybody had chosen __________ own meal to eat on the field trip. A. its B. his or her C. their D. they're I think it is either B or C but i don't know for sure
50. ### English

The sentence below requires a citation. In the last three years, Ford has sold more automobiles in America than any other auto-manufacturer. 1.True 2.False I say False. Please check my answer.
51. ### physics. Can you check my answer?

Two spherical objects are separated by a distance of 2.41 x 10-3 m. The objects are initially electrically neutral and are very small compared to the distance between them. Each object acquires the same negative charge due to the addition of electrons. As a result, each object...
52. ### calculus

determine whether the series is convergent if so find sum it is the sum from k=1 to infinity of ((-1)^k)/(3^(k+1)) i found this series to be geometric where a=-1/9 and r=1/3 my answer was converges to 1/6
53. ### Calculus

Find the derivative of y with respect to x: y=3sin^4(2-x)^-1 y=[3sin(2-x)^-1]^4 y'=4[3sin(2-x)^-1]^3 (-3cos(2-x)^-1)(-1) -(2-x)^-2 y'=[12cos(2-x)^-1][3sin^3(2-x)^-1][2-x]^2 but the answer does not have a 3 in front of sin. What happened to the 3?
54. ### calculus

find f'(x) for the following: f(x)= cos^5(4x-19) I keep getting 20cos^4(4x-19)sin, but the answer is supposed to be -20cos^4(4x-19)sin(4x-19). I can't seem to get there with derivatives
55. ### pre cal

The given equation is a partial answer to a calculus problem. Solve the equation for the symbol y'. 6y2y' − y − xy' = x y' =
56. ### Calculus (RATE OF CHANGE)

Estimate the instantaneous rate of change at the point indicated. (Round your answer to four decimal places.) y(x) = 1/ x + 2; x = 2
57. ### calculus

Estimate the area under the curve f(x) = x2 from x = 1 to x = 5 by using four inscribed (under the curve) rectangles. Answer to the nearest integer.
58. ### Calculus

Find the first three nonzero terms and the general term of the Maclaurin series generated by e^(-6x). My answer: 1 + x + (x^2)/2, general term (x^(n-1))/(n-1)!
59. ### Chemistry - check answer

A 20.0 L reaction vessel contains 0.016 moles CO2, 1.05 moles of CO, and 2.00 moles of C. The mixture is approaching the following equilibrium: CO2(g) + C(s) <--> 2CO(g) a) Calculate the reaction quotient Q. b) If value of K is 1.17, predict which direction the reaction ...
60. ### calculus

Is this a correct answer, I'm trying to integrate the marginal revenue function to get the function for total revenue. R'(x)=(30/(2x +1)^2)+30 =R(x)=(-15/2x+1)+30x
61. ### math-calculus

if graoh of y = g(x) passes through point (-3,-6) then graph of y = |g(x)| must pass through point. how it be this answer i want to know (-3,6)
62. ### Calculus AB

What is the maximum volume in cubic inches of an open box to be made from a 16-inch by 30-inch piece of cardboard by cutting out squares of equal sides from the four corners and bending up the sides? Your work must include a statement of the function and its derivative. Give ...
63. ### Social Studies

Why was inflation a problem after World War II? A)Many people went into debt buying on credit without the income to pay in cash. B)Many men came home from the war without being able to get a job. C)Government controls ended,and prices of goods rose without workers getting ...
64. ### precalculus

Can you check my answers? 1.Use the Binomial Theorem to expand and simplify the expression. (2 - 3x)3 -27x3 + 104x2 - 36x + 8 -27x3 + 54x2 - 36x + 8 -27x3 + 8 -27x3 + 54x2 - 18x + 8 answer:b 2.Find the 5th term in the expansion of the binomial. (2x - 4)8 -458,752x3 286,720x4 ...
65. ### Math

Write a sequence of transformations that maps quadrilateral ABCD onto quadrilateral A''B''C''D'' My answer: Reflection across the y axis then translate 2 units down. I searched the question up to check the answer but everyones says Reflection across the y axis then translate 1...
66. ### Algebra: x and y intercept, someone check please

1. Find the x-intercept and the y-intercept of 8x - 2y = -24. a. x = -7, y = 2 b. x = -4, y = 14 c. x = -3, y = 12 d. x = 7, y = -2 answer: d 2. Find the x- and y- intercept of the line 2x + 3y = -18. a. x-intercept is 18, y-intercept is 18. b. x-intercept is -6, y-intercept ...
67. ### math

can someone check my answers subtract 7/9-(-13/19)=3/2 multiply (4)(-3/2)=-6f find the first and third quaritles q1 and q3 of the following set of numbers 13,4,12,16,8,14,8,3,10,8, my answer 4:12 find the first and third quaritles q1 and q3 of the following set of numbers .16...
68. ### calculus help

find the producer's surplus at a price level of p=\$150 for the price-supply equation p=S(x)=100-0.25x is received p=200 the final answer is 5000 is this correct and can you do the steps so i can see if i did i correct You have not defined x. Is S supposed to be Supply or ...
69. ### Calculus

Calculus Limit Problem: Evaluate the function at the given numbers (correct to six decimal places). Use the results to guess the value of the limit, or explain why it does not exist. f(x)=cosx-1/sinx x=1, .5, .4, .3, .2, .1, .05, .01 What should I do? A table of values??
70. ### French

Could you please check my answers thanks. Directions: Give my own answers. 1. Tu fais quelquefois la cuisine chez toi? Answer: Oui, je fais quelquefois la cuisine chez moi. 2. Tu fais études dans un lycée français ou dans une école secondaire américaine? Answer: Je ne ...
71. ### my math

True or false? Intentionally writing a check on an account with insufficient funds is allowed under certain conditions. I say false? Ben Spender writes a \$50 check which is returned by his bank with additional charges. The company he wrote the check to, Art Supply Inc., also ...
72. ### calculus

Another problem: determine whether the series is convergent if so find sum it is the sum from k=1 to infinity of ((-1)^k)/(3^(k+1)) i found this series to be geometric where a=-1/9 and r=1/3 my answer was converges to 1/6
73. ### Calculus

log(subscript2)*4 = log(subscript8)*8 + .5log(subscript4)*16 True or False. I do not know how to do this if anyone could show me the steps not the answer, but the steps that would be nice.
74. ### Calculus

How do i find the derivative of f(t)= 20- 30/rooot 9 + t^2 heres how i did it f'(x)= 20' - 30/root(9+t^2) ' = 0 - 30/root(9+t^2) ' (Quotient rule) f'(x)= 30' (root(9+t^2) - 30(root(9+t^2) ' f'(x)= -30(0.5(9+t^2)^-0.5) (2t) the answer at the back of the book is 30t/(9+t^2)^1/2...
75. ### Calculus

Use the graph to estimate the limit: lim x->0 sin(3x)/x When x is in degrees lim x->0 sin(3x)/x = ________ I thought the the answer was (3*180)/pi but it's not... please help... Thanks
76. ### calculus help

consider lim -->0^+ 1)sin(4x)/sin(3x) find the limit using a table of values 2)based on your answer what should the limit equal?
77. ### Calculus

Test for convergence or divergence. Indicate the test that was used and justify your answer. Sigma (lower index n = 4; upper index infinity) 1/(3n^2-2n-15)
78. ### Calculus

Test for convergence or divergence. Indicate the test that was used and justify your answer. Sigma (lower index n = 2; upper index infinity) [ln(n)]/n
79. ### calculus

Use a linear approximation of f(x)=log(x) at x=1 to approximate log(3/4). Express your answer as an exact fraction; remember that log denotes the natural log.
80. ### Calculus

Find the area of the shaded region below. x=(y^2)-2 x=e^y y=1 y=-1 I was doing a horizontal split so I had the integral from -1 to 1 (y^2-2)-e^y dy and had the answer -5.683... and it's wrong. What am I doing wrong?
81. ### pre - CALCULUS

Find the reference angle for the given angle. Show your work. -404° my answer is 44 degree , But i don't know how to put my work together..
82. ### Math: Calculus

Answer the following questions for the function f(x)=sin(x/4)^2 defined on the interval [-12.266371, 2.241593]. Rememer that you can enter pi for 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 ...
83. ### medical insurance forms

please check my answer thanks True or False The information for Blocks 1-9 on the CMS-1500 can be obtained from the medical treatment record I said True
84. ### econ

My professor asked to take the derivative of profit for fun so I just wanted to check if my answer was right. profit=PQ(p,a)-c(q(a))-a dΠ/dQ = -2bQ + (a-c) ≡ 0. Thus, -2bQ = -(a-c) and Q = (a-c)/2b.
85. ### Math(Check)

if the exchange rate between venezuelan and american currencies is 2144.6 bolivars per u.s dollar, about how many u.s dollar can you get for 500 bolivars i think the answer is \$4.28

Please help-I'm stuck really bad Thank you for any help you can provide What are the roots of the equation x^2 -4x + 3 = 0 x^2 - 4x = 3 x^2 +2(-2)x + -2^2 = -3 = -2^2 x^2 + -4x + 4 = 1 (x + -2)^2 = 1 qrt (x+-2)^2 = sqrt 1 x+-2 = plus or minus 1 therefore x=1 x=3 roots are 1 and 3
87. ### Check Fib. Number problem please

For any prime number p except 2 and 5, either Fp-1 or fp+1 is divisible by p. If I showed that this is true for p=7, the answer should be F8---is this correct because f8 is 21. P=11 would be divisible by 55 which is F10.

Which section of a personal narrative requires the most development? a. introduction b. conclusion c. character introduction d. plot My answer: D. Please check!
89. ### Math Answer Check

csc^2 x = 5 over the interval 0 <= x < 2pi 1. 26.57 degs 2. 153.43 degs I think the solutions in the third and fourth quadrants don't work because they don't fall in the interval.

Which of the following is an oxidation reaction? A. AuCl4- → AuCl 2- **** B. Mn7+ → Mn2+ C. Cl2 → ClO3- D. Co3+ → Co2+
91. ### English

In a research-based paper it is sometimes OK to quote directly from a research source without any attribution. True False I say False. Please check my answer.
92. ### calculus

A plane flying along a straight path loses altitude at the rate of 1000 ft for each 5200 ft covered horizontally. What is the angle of descent of the plane? (Round your answer to one decimal place.)
93. ### Pre Calculus

Determine all discontinuities that exist on the graph of y = f(x) shown below. Please show your reasoning by justifying your answer with the conditions of continuity. If there is a discontinuity, identify it as removable or non-removable.
94. ### Calculus

It requires 8 inch pounds of work to stretch a certain spring 2 inches from its rest position. Assuming that the spring follows hooke's law, what is k? Please answer this question. Thanks for your answers in advance.
95. ### calculus 1

lim x---> 2 4x+1/3x-4 illustrate definition 2 by finding values of delta that correspond to epsilon=0.5 and epsilon= 0.1 I having trouble setting this up. do i set up two different functions then divide? 0.2898 that's the answer i got....
96. ### calculus 2

Use Euler's method with a step size of 0.2 to estimate y(1), where y(x) is the solution of the initial value problem y' = 6x+y^2, y(0)=0. Round your final answer to 4 places, but keep more places on the intermediate steps for accuracy.
97. ### calculus

A variable force of 7xâˆ’2 pounds moves an object along a straight line when it is x feet from the origin. Calculate the work done in moving the object from x = 1 ft to x = 19 ft. (Round your answer to two decimal places.)
98. ### Math/Calculus

How would I evaluate the following integral by using integration by parts? Integral of: (t^3)(e^x)? You mean (x^3)(e^x)? x^3 exp(x) dx = x^3 d[exp(x)] = d[x^3 exp(x)] - exp(x) d[x^3] = d[x^3 exp(x)] - 3 x^2 exp(x) dx So, if you integrate this you get x^3 exp(x) - 3 Integral of...
99. ### calc check

<<y=(1/A)*integral from a to b of: (1/2)[f(x)]^2 dx >> If that is the y value of the center of mass, I don't know why the factor (1/2) is there I also don't agree with your calculation of the x value, which should be 1/(ln 2). I agree with you that the area is ln 2...
100. ### calculus

Please check this for me: the lenght l, width w, & height h of a box change with time. At a certain instant the dimensions are l=1m & w=h=2m. L and W are increasing at a rate of 2m/sec while H is decreasing at a rate of 2m/sec. At that instant, find the rate at which the ...