86,593 results, page 76

### Calculus

(kx^2)+m, x<-2 g(x)=e^(ln(2x+3))-2<x<3 kx-m, x>3 Find values of k and m

### Calculus integrals

(e^(3x)-2e^(2x)+(5e^x))/(e^x+1) how do I do this what is the techniques??

### Calculus

What is the unit vector of v: <-6, -8>?

### Calculus

If f(x) = 2xsqrt(x-6), what is the value of (f^-1)(40)?

### calculus

y'? 1.y=arctan(a+x/1-ax); a is constant 2.y=e^x-e^-x/e^x+e^-x

### Calculus

What is the absolute value of: 3 - 8i? A. 9 B. 64 C. √55 D. √73

14cos+7=O

### Calculus

Suppose that f(x+h)-f(x) =-4 h x^2 - 1 h x + 4 h^2 x + 3 h^2 -3 h^3. Find: f^1(x)

### Calculus

Evaluate ∫tan(3x)dx

### pre calculus

find (a)2v+u, (b)u-3v, and (c)5u-v u=<0,-4>, v=<-2,-8>

### pre calculus

find (a)2v+u, (b)u-3v), and (c)5u-v u=<-2,-3> v=<-1,-10>

### pre calculus

find (a)2v+u, (b)u-3v), and (c)5u-v. 1.u=i-j, v=6i+9j 2.u=2i+3j, v=-i-2j

### pre calculus

solve 2x + y = 8 4x + 2y = 16

### Calculus

Sinx=e^y , 0 <x <pi, what is dy/dx in terms of x?

### Calculus

If f(x)=(x^2+1)^(2-3x), then f'(1) = -3/2ln(2)-1/2 Is this correct?

### Calculus

Find f'(1) if f(x)=(h(x))^3 Chart: x= -3,-2,-1,0,1,2,3 g(x)= 0,1,3,2,0,-2,-3 h(x)= 1,2,0,3,-1,-2,0 g'(x)= 1,2,-1,-2,-2,-1,0 h'(x)= 0,-3,-2,3,-2,0,1

### Calculus

How do you fine the derivative of (x-3)^-3

### calculus

limx-->3 sin 3x/4x

### Calculus

Integrate x^2/(sqrt(x^2-25)dx

### Calculus

Integrate sqrt(16+x^2) dx

### Calculus

What is y=-2/7x-1 in standard form?

### Calculus

What is the function y (x) if it statisfies Y"=6 y'(1)=4 and y (1)=6

### calculus

Evaluate the integral. from 1 to 5 (ln(x))^2/x^3 dx.

### Calculus

Find f if f''(x)=2+cos(x) f(0)=5 f(pi/2)=−3

### Calculus

Find the derivative f'(x)= : f(x)=∫[2,x] ((1/2)t^2-1)^8 dt

### Math - Calculus

g(x)=∫[6x,3x] (u+2)/u-5) du Find g'(x)

### Pre-Calculus 12

how to graph y= (x^2-3x-10)/(x-2)

### Pre-Calculus 12

how to solve 3^(x-2) = 5^x

### Calculus

What how do you compute the sum of 1/2 + 1/4 + 1/8 + 1/16 + 1/32 +++ 1/2N ?

### Calculus

What how do you compute the sum of 1/2 + 1/4 + 1/8 + 1/16 + 1/32 +++ 1/2N ? ..

### calculus

Differentiate the function. f(x) = e^7

### calculus

Differentiate the function.((x^2)-((3x^2)(ln(4x))))/(x^6)

Could you check these please? Firewood is usually sold by a measure known as a cord. A full cord may be a stack 8x4x4ft or a stack 8x8x2ft 10. what is the volume of a full cord? 8*4*4=(128ft) 11. A short cord or a face cord of wood is 8x4xThe lenght of the logs. What is the ...

### chemistry

1) Starting with 75.00 g of 1-propanol and 75.00 g of PCl 3. Calculate the theoretical yield of 1-chloropropane. 3CH3CH2CH2OH + PCl 3 --> 3CH3CH2CH2Cl + H3PO3 Answer in terms of grams. the answer that i got is 98.12, is this right and how many sig figs should it be? 2) What...

### ENGLISH 11

1. When Thomas Paine writes about reconciliation, he is referring to (1 point) {A.}the southern Colonies staying peacefully connected to the northern Colonies. B.the Colonies staying peacefully connected with Great Britain. C.the Colonists staying peacefully connected to ...

### math,correction ,

can someone correct these for me please... Remove the parentheses. -(3x+5y) My answer: -3x-5y Find the value of the polynomial -x^2+3x-1 when x=4 My answer: -5 multiply. 10x(-4x-7) my answer: -40x^2-70x all correct. awsome.....thank you...i just want to make sure....

### Algebra

Hi jiskha! I was wondering if anyone could answer this ~fun~ question. f(x)=5x^2-2x+3 and g(x)=4x^2+7x-5. I have to find f+g. For my answer, I got 12x^4+-2x+-2, while the answers in my packet said 9x^2+5x-2. Could anyone explain this? (Unless I wrote down the wrong answer in ...

Thanks for your answer DrBob. I am still stumped.The question I was asked to answer is Do acetic acid and stearic acid undergo controlled oxidation reactions? Explain why/why not and draw an equation to illustrate the answer.

If θ is an angle in standard position and its terminal side passes through the point (−3,2), find the exact value of cscθ . I know the answer...but i want to know how you get the answer... The answer is radical 13/2

### Chemistry

A first order reaction has a rate constant of 0.0733 s−1. What is the half life for this reaction in seconds? when I plug in the numbers in the formula, my answer was 9.45. But on the computer it says the answer is wrong. How do I find the right answer?

### Math (putting the question back up, again)

- 5/8c = 20 Answer choices: 34 . -32 . -34 . 32 I keep getting -100, I think I'm multiplying something wrong. But my next answer would be -32 because if you did -8/5 x 20 it would equal -32,am I right? -12.8 = 4t *not multiple choice* but my answer is 3.2 because -12.8/4 .

### Trigonomrtry

I had asked help for a question and Steve gave me this answer on how to set up equation 20-x/6.11=tan28 degrees The answer is approx 16.75 ft. I still don't know how to do this! When I do it I get different answer. Could you please break this down step by step so I can ...

### math

Another problem that I am disagreeing with the answer key - I am once again solving for b -9 = -24/7 + b I add -24/7 to both sides to get -9 + 24/7 = b When I make 7 my denominator for both I get -63/7 + 24/7 = b My final answer is -39/7 = b The answer book says it's positive ...

### Math (Riemann Sums)

Measurements of a lake’s width were taken at 15-foot intervals, as shown: x= 0 15 30 45 60 75 90 105 120 f(x)= 0 15 18 20 19 23 24 22 12 Estimate integral (0,120) f(x) dx with n = 4, using Midpoint approximation. For this question, I ended up with 7200 but compared to the ...

### (For BobPursely )

Question: Calculate the frequency of the AA, Aa, and aa genotypes after one generation if the initial population consists of 0.2 AA, 0.6 Aa, and 0.2 aa. What I have done is: P = (0.2)+(0.5)(0.6)= 0.50 q = 1-p = 1 - 0.50 = 0.50 Can someone check my answer plz. http://www.kursus...

During exercise, the recommended maximum heart rate in beats per minute is modeled by the formula M = 176 – 0.8A, where M is the maximum heart rate and A is the person’s age. Approximately, at what age would you have a recommended heart rate in beats per minute of 125? (1 ...

### ENGLISH

I need to make sure I understand this. I need to rewrite each sentence twice, once as a periodic sentence and once as a cumulative sentence. To me, both look like cumulative sentences though, so I am a little confused. If someone could check my work I will be very grateful. 1)...

### English

Can you please check these sentences? I forgot to include them before. I really need to check them with you. 1) My family and I have been on holiday in (to?) Greece (he has come back from Greece). We stayed on (not in) Mikonos, a little island... 2) There wasn't (any necessary...

### Algebra

Can someone verify if my answers are correct? Solve. 1/x+6-1/x-6 My answer is: -12/x^2-36 Solve. 1/x+5+2=5/x+5 My answer is: -3 Subtract. Express your answer in simplest form. 13x/30-4x/15 My answer is: x/6 Can someone verify if my answers are correct? Solve. 1/x+6-1/x-6 My ...

### physics

You have a parallel plate capacitor (with air between its plates) which is attached to a voltage source until the capacitor is fully charged. (a)After detaching the capcitor from the voltage source, you move the capacitor's plates farther apart; which of the following will ...

### Math

1. Solve the proportion: z z+9 ---- = ---- 3 12 A. 4 b. 3 c. 2 d. 1 my answer is c ? 2. Solve the proportion: 16 = 8 --- --- 4d+2 3 A. 1^ 11 --- 12 b. 1^ 1 -- 3 c. 1 d. 2 My answer is D ? 3. A solution contains 2.2 liters of water. Convert this measurement to milliliters. A. ...

### U.S History - can u help to check my answer :)

Document B “An insinuation had fallen from the gentleman from Tennessee (Mr. Grundy) that the late massacre of our brethren on the Wabash [at Tippecanoe] had been instigated by the British government. Has the President been given any such information? Has the gentleman [...

### Literacy 3

Please Check my work. Thank you. 6. To avoid plagiarism in you written research paper, you must provide a citation for which of the following? A. The United Nations ruling on the Soviet-bloc countries B. The date the berlin Wall was pulled down by a crowd in Germany C. ...

### Physics - Charged objects (check + help)

Three charged objects are located t the vertices of a right triangle. Charge A (5*10^-6) has Cartesian coordinates (0,4; Charge B (-5.0*10^-6) is at the origin; charge c (+4.0*10^-6) has coordinates (5,0), where the coordinates are in meters. What is the net force on each ...

### Calculus

A smoke detector contains 0.2 mg of Americium 241 (Am-241), a radioactive element that decays in t years according to the relation m = 0.2(0.5)^(t/432.2). Where m is the mass, in milligrams, remaining after t years. A) The smoke detector will no longer work when the amount of ...

### Calculus

A smoke detector contains 0.2 mg of Americium 241 (Am-241), a radioactive element that decays in t years according to the relation m = 0.2(0.5)^(t/432.2). Where m is the mass, in milligrams, remaining after t years. A) The smoke detector will no longer work when the amount of ...

### CALCULUS

A smoke detector contains 0.2 mg of Americium 241 (Am-241), a radioactive element that decays in t years according to the relation m = 0.2(0.5)^(t/432.2). Where m is the mass, in milligrams, remaining after t years. A) The smoke detector will no longer work when the amount of ...

### Calculus

Which of the following integrals cannot be evaluated using a simple substitution? the integral of 1 divided by the quantity x squared plus 1, dx the integral of 1 divided by the quantity x squared plus 1, dx the integral of x divided by the quantity x squared plus 1, dx (MY ...

### Writing this equation

how do I write the equation of a line perpendicular to the line 6x – 3y=10 and containing the point (-6, 2). The line you are given can have its equation rewritten im y = mx + b as: y = 2x - 10/3 That tells you that is slope is m = 2. A line that is perpendicular to that ...

### Chemistry II

Hydrochloric acid (77.0 mL of .267 M) is added to 236.0 mL of .0730 M Ba(OH)2 solution. What is the concentration of the excess H+ or OH- ions left in the solution? Done two of these. They are all alike. Use the template from the previous problem. Post your work if you get ...

### Grammar

Circle the nouns that can be used with the adjectives on the right , Development-environment-figures. (Recent) Answer:development and environment Crisis-supply-estimates. (Reliable) Answer:supply and estimates Awareness-theory-concern. (Public) Answer:Awareness and concern ...

### Economy

The Good’n’Fresh Grocery Store has two checkout lanes and four employees. Employees are equally skilled, and all are able to either operate a register (checkers) or bag groceries (baggers). The store owner assigns one checker and one bagger to each lane. A lane with a ...

### English (Check)

1.Read the sentence below: Your anger at the game's final score is as my despair for my exam scores. What type of figurative language does this sentence use? A.Allusion B.Analogy C.Hyperbole D.Simile**** 2.Read the sentence below: Simplicity is to garden design as symmetry is ...

Please check my new copy: I believe the essential qualities a leader must possess are to set a vision and to be able to lead. A leader must be able to set a vision to seek for improvement and change the mistakes. A leader must be able to set a vision for improvement to make ...

### physics

Question Part Points Submissions Used 1 2 3 4 5 –/5 –/5 0/5 –/5 2/2 0/10 0/10 1/10 0/10 2/10 Total 2/22 A block of mass m = 2.00 kg is released from rest at h = 0.400 m from the surface of a table, at the top of a θ = 35.0° incline as shown below. The frictionless ...

A rectangular piece of tin has an area of 1334 square inches. A square tab of 3 inches is cut from each corner, and the ends and sides are turned up to make an open box. If the volume of the box is 2760 cubic inches, what were the original dimensions of the rectangular piece ...

### Math

How do you solve this? I posted this question last night and someone answered but it wasn't the right answer. I have tried so many times and still can't get the right answer. the right answer is suppose to be 15/2 5/6-1/3+ 7/8/(1/2)^3 Thank you for your help!!

### Calculus II: Finding the volume of a revolution

Question: Find the volume of revolution bounded by y-axis, y=cos(x), and y=sin(x) about the horizontal axis. Since the rotation is happening at the horizontal axis, I thought the limits of integration would be [-1,1] and if the curves are rotated they would over lap so i used ...

### History

British troops were out moving across the back bay. In Concord and Lexington, trained militiamen were waiting to respond. Where and approximately when is this? Check this site for your answer. Note: the Back Bay is in Boston. http://www.kidport.com/REFLIB/UsaHistory/...

### English

Please check my answers! I'm like 92.7% sure there correct but I want to be sure. My answer has the ~~~. Which of the following is the indirect object in the sentence? Lizzie gave Charles a hige birthday gift. A.Lizzie B. Charles~~~ C. Huge D. Gift Which of the following is ...

### english

perseverance,expanse,stifle,weary,writhe,premises 1.In order to meet their goals,Olympic hopefuls require persistence as they train and(perserance) in the face of obstacles. 2.Readers must leave library(expanse)by the stated closing time unless permissions for after hour ...

### algebra

1)Find the exact solutions to 3x^2=5x-1 using the quadratic formula. answer=5 plus or minus the square root of 37 over 6 2)Use the discriminant to determine the number and type of roots for the equation 2x^2-7x+9=0 answer=2 complex 3)Identify the vertex,axis of symmetry,and ...

### 4 CALCULUS study problem

1. How fast does the radius of a spherical soap bubble change when you blow air into it at the rate of 15 cubic centimeters per second? Our known rate is dV/dt, the change in volume with respect to time, which is 15 cubic centimeters per second. The rate we want to find is dr/...

### English2- revised

Question In what ways are full-sentence outlines more beneficial than topic outlines? If someone asked, ¿Wouldn¿t it be simpler just to write your paper than to create a full-sentence outline?¿ how would you answer? Explain your response. What steps will you take to turn ...

### algebra

1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(-1/4)n-1 on the right side a.25 b.80/3 c.16 d.does not exist answer=c 3)Find the sum of ...

### algebra

1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(-1/4)n-1 on the right side a.25 b.80/3 c.16 d.does not exist answer=c 3)Find the sum of ...

### algebra

1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 a.15 b.15/2 c.-15 d.1/15 answer=a 2)Find the sum of the infinite geometric series n=1 at the bottom of the sigma notation 20(-1/4)n-1 on the right side a.25 b.80/3 c.16 d.does not exist answer=c 3)Find the sum of ...

### Calculus

Boats A and B leave the same place at the same time. Boat A heads due North at 12 km/hr. Boat B heads due East at 18 km/hr. After 2.5 hours, how fast is the distance between the boats increasing? You are looking at a right-angled triangle, let S be the distance between them ...

### Math: Calculus - Vectors

A plane flies on a bearing of 120 degrees at a constant speed of 550 km/h. If the velocity of the wind is 50 km/h on a bearing 220 degrees, what is the velocity of the plane with respect to the ground? Textbook Answer: 543.5 km/h at a bearing of 125.2 degrees My answer: 543.6 ...

### Government Check

What is the primary claim made by those who oppose hate crimes legislation? a)There is no way to catch all perpetrators of hate crimes, so all perpetrators should be punished equally. =b)There is no way to determine the motivations behind a crime, so all criminals should be ...

### Calculus

i was just wondering if the limit of a funtion exists as it approches a value if both the right side limit and the left side limit both equal the same infinity ( postive inififnty for both sides, or negative infinty for both sides). i know that if one side is negative infinity...

I'm in seventh grade and working on my test for Reading. Everything is fairly simple and easy, but I came across a question that I cannot determine the answer for. The question is: "What is the meaning of the prefix pro- in the word 'proposed'?" The answer choices are: "above...

### french

Can you check my paragraph and make sure its grammatically correct in passé composé? Paragraph: Je suis allé à l'église hier. Après la messe, je suis allé en ville pour chercher quelque chose dans le magasin. Moi et ma famille sont allés manger au restaurant restuarant...

### calculus

hi! just needed help on an FRQ for ap calculus ab. let me know if you have any questions for me. I'm just really confused as far as what I am meant to do. If you could walk me through it that would be amazing. THANKS!! A population is modeled by a function P that satisfies the...

### Calculus - Need help please

Given the following​ function, y=tan(pi-3x) 1)determine the interval for the principal cycle. (^ Type your answer in interval notation) 2)Then for the principal​ cycle, determine the equations of the vertical​ asymptotes 3)find the coordinates of the center&#...

### Electrolytic Cells

Hey...can u check my two answers for a and b and can u help on the rest? 8. An electrolytic cell consisting of an aqueous solution of NaCl is set up. Answer the following. a. What is the strongest oxidizing agent present? My answer: Na; sodium b. What is the strongest reducing...

### probobility

4 -letter "words" are formed using the letters A, B, C, D, E, F, G. How many such words are possible for each of the following conditions? (a) No condition is imposed. Your answer is : Preview (b) No letter can be repeated in a word. Your answer is : Preview (c) Each word must...

### Math check

The number of ships to arrive at a harbor on any given day is a random variable represented by x. The probability distribution of x is as follows. (Give your answers correct to two decimal places.) x 10 11 12 13 14 P(x) 0.37 0.09 0.05 0.14 0.35 (a) Find the mean of the number ...

### Check my CALCULUS work, please! :)

Question 1. lim h->0(sqrt 49+h-7)/h = 14 1/14*** 0 7 -1/7 Question 2. lim x->infinity(12+x-3x^2)/(x^2-4)= -3*** -2 0 2 3 Question 3. lim x->infinity (5x^3+x^7)/(e^x)= infinity*** 0 -1 3 Question 4. Given that: x 6.8 6.9 6.99 7.01 7.1 7.2 g(x) 9.44 10.21 10.92 -11.08 -...

### Spanish

I need help understanding how to ask/answer questions using the word 'Que'. If the question is ?Que' estudias tu'? is the correct answer: 'Yo estudio ___' and then whatever you're studying or could I simply answer 'Estudio ____' Also, in these questions, does one add the ...

### Ann

Need to correct the punctuation for each sentence. then right if it is declarative, interrogative, imperateive, or exclamatory. 1. What a strang name that is. Answer=dec 2. Some mushrooms are very poisonous! Answer=exclamatory 3. Don't eat that mushroom! Answer=exclamtory

### Math, Algebra.

2. Sylvia has 6 1/2 boxes of chocolate to share at a family picnic. If she gives each person 1/3 of a box, how many people can receive chocolate? 13, 17, 19, or 21? I believe that the answer is 19. Take 6 1/2, divided by 1/3, and get 19 1/2. Since 19 is the closest answer, the...

Consider the parameterization of the unit circle given by x=cos(4t^2−t), y=sin(4t^2−t) for t in (−InF, INF). Describe in words and sketch how the circle is traced out, and use this to answer the following questions. (a) When is the parameterization tracing ...

1.¿Comó te sentiste ayer? Me sentí muy bien ayer. 2. ¿Adonde fuiste ayer? Yo fui al cine. 3. ¿Adonde fue tu mama ayer? Mi mama fue a la tienda. 4. ¿Visitaste a tu familia la semana pasada? Sí, yo visité mi familia la semana pasada. 5. ¿Donde estudiaste ayer? Yo estudi...

Can you check my answer What do you think the political and economic future of Cyprus will be like? The future of Cyprus will be a future governed by a new and different governmental and political structure. Like focusing on the economy instead of the politicial problems on ...

### Algebra

1. If m∠1=37º , what is m∠4? a) 53º b) 43º c) 37º d) 27º 2. If m∠1=50º , what is m∠5? a) 50º b) 40º c) 35º d) 25º 3. If m∠4=25º , what is m∠8? a) 105º b) 75º c) 175º d) 25º 4. What is the sum of the interior angles of a ...

Of the 4800 students at Medium Suburban College (MSC), 50 play collegiate soccer, 60 play collegiate lacrosse, and 96 play collegiate football. Only 6 students play both collegiate soccer and lacrosse, 6 play collegiate soccer and football, and 16 play collegiate lacrosse and ...

### Algebra 1

Can you check this one for me. Evalute the polynomial for x=1. 2x^2-2x+4 When x=-1, 2x^2-2x+4=8

### math help

can someone check and see if i did this right x+2y=8 x-x+2y=8-x 2y=8-x 2y/2=8/2-x y=4-x y=4-x/2 y=4-1/2x

### math

can someone check my answers if f(x)=4x-3 find f(-1) f(-1)=4*(-1)-3=-4-3= -7