Calculus (Answer Check)

87,112 results, page 28

business

You have been retained to analyze how many check-in agents should be used at a check-in counter for a large hotel. During normal business hours, customers arrive at a rate of about 24 per hour, and it takes about 7 minutes to complete the check-in process. Both the poisson ...

Chemistry(Please check, thank you!!)

For my rate of reaction experiment I have to answer the question "why did we ask you to measure the room termperature and temperature of reaction solutions". For the experiment we used 5 flasks and we put one of them in an ice bath at 6-10 degrees C. My answer is that we ...

algebra

please check the following answers and review the questions. tank you 1. 2/3 * negative 6 * 5 my answer: -100 2. a landscaper installs 12 sections of trellis. each section of trellis is 3/4 yard long. how many yards of trellis are installed altogether? my answer: 9 yards of ...

Math check 4

Find the y-intercepts for the function given by: f(x)= 4/(x+5)-1/(x-4)/2/(x-3)+3/(x+2) Math check - Damon, Sunday, October 12, 2008 at 5:56pm The y axis intercepts are the values of the function when x = 0 4/5 - [(1/-4)] / [(2/-3)] + 3/2 Math check - shawn, Sunday, October 12...

precalculus

Find the difference quotient by using f(x+h)−f(x)/h 1) f(x) = √(2x+1) answer (√(2x+1+2h) - √(2x+1))/h can you check please

Can someone check my answer please

Can someone check this for me? Suppose that the number of cars, C, on 1st Avenue in a city over a period of time t, in months, is graphed on a rectangular coordinate system where time is on the horizontal axis. Suppose that the number of cars driven on 1st Avenue can be ...

PHYSICS (CHECK WORK)

Can somebody please check my work. I got part a right, but my answer for part b is wrong. (a) Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 25.6 m. Assume the density of the water is 1.00 103 kg/m3 and the air above is at a pressure of 101.3...

math - please check me

Identify the amount in the following application In a shipment if 1200 parts, 60 were found to be detective. What percent of the parts were faulty? a. 60 b. 1200 c. what percent d. shipment answer: c Write the following in the standard form of a number. Two billion, nine ...

Poem: Young by Anne Sexton

Could you check these answer thanks so much 1. How do you think the girl in "Young," feels about where she is in her life. Answer: The girl wonders what is coming next in her life because she is full of questions about what's her future going to be like. The girl was looking ...

Spainsh

Check? Choose the correct option to complete the sentence Choose the correct option to complete the sentence 1. Marco y Ana ______________ en Acapulco por 3 semanas A. estuvo B. estuvieron C. estuvimos D. estuvisteis My answer: A Yo no _____________ comprar ropa muy cara en la...

calculus

The problem is to evaluate the integral 10secxtanx dx, from -1/7 pi to 3/8 pi. What I've done so far is evaluated the integral since secxtanx is a trig identity, so the integral of that is secx. I took out the 10 since it was a constant which leaves me with 10[sec(3/8)pi - sec...

Calculus

A box of fixed volume V has a square base with length x. Write a formula for the height, h, of the box in terms of x and V. Sketch a graph of h versus x. Is the answer h=V/x^2

Pre-calculus

A set of data is normally distributed with a mean of 500 and a standard deviation of 40. What percent of the data is between 460 and 540? Answer: 68.3%

Calculus I

Hi, I'm trying to figure this out, but the answer I keep coming up with is incorrect. Can anyone help me out? Thanks. Problem: y=2(6-x^2)^5 I know I'm supposed to use the chain rule, but I'm getting confused.

Calculus

I don't understand how to answer this problem: The base of a solid is bounded by y=x+1 and y= x^2-1. Find the volume of the solid if the cross section is perpendicular to the x axis are equilateral triangles.

calculus

How many critical points does the function: (x+2)^5 * (x-3)^4 have? How would I solve this quickly? The answer says something about an effect of multiplicity of the zeros of the function?

calculus

Evaluate integral of e^x^(1/2) / x^(1/2) I've looked at the answer but I don't understand what people do in their steps. When I substitute x^(1/2) for u, I get: 2du = 1/x^(1/2) dx But what do you do with the 1/x^(1/2) dx? It just disappears in the solutions I've seen people give.

calculus

The given curve is rotated about the y-axis. Find the area of the resulting surface. y = 1/4x^2 − 1/2ln x, 4 ≤ x ≤ 5 The answer is supposed to be 64/3*pi

Calculus - Series2

Find the sum of each of the convergent series: b) 5 - 1/3 + 20/9 - 40/27 + 80/81 ..... so first we need to find the general term, and I'm not sure of my answer, but I got: ((-1)^2 * 2!)/3^n and a0 = 5 From here on I'm lost.

Calculus

Determine the convergence or divergence of the series. Indicate the test that was used and justify your answer. Sigma (lower index n = 1; upper index infinity) [(-1)^n*3^n]/(n*2^n)

calculus

f(x)=sqrt(x-2) what is the inverse of f? I got inverse f(x)= x^2+2 however, you need to specify the domain of x. the answer key says when x=>0 can you please explain why? I thought it would be when x=>2 ?

Calculus Can you help

Suppose the functions f and g and their derivatives have the following values at x = 1 and x = 2. Let h(x) = f(g(x)). Evaluate h′(1). X | f(x) G(x) f'(x) g'(x) ____________________________ 1 | 8 2 1/3 -3 2 | 3 -4 2π 5 My answer: -6π but I'm not really sure if I...

Pre-Calculus

x = 2/7 is a root of 49x^3 - 126x^2 + 60x - 8 = 0. Factor the polynomial completely and list all real solutions. My answer: (x - 2)(7x - 2)^2 = 0 factored, and the solutions are x = 2 and x = 2/7.

Calculus

Use Simpson's Rule with n=10 to estimate the arc length of the curve. Compare your answer with the value of the integral produced by your calculator. x = y + y^(1/2), 1 ≤ y ≤2

Calculus

A mineral deposit along a strip of length 8 cm has density s(x)=0.07x(8−x) g/cm for 0≤x≤8. Calculate the total mass of the deposit. Your answer must include units.

calculus

the fence around a rectangular compound costs $4 a foot for three of the four sides. the fourth side is the wall of a building, so no fence is needed for that side. we will call the distance of the fence parallel to the wall w for width and the two other sides d for depth. a) ...

Chemistry

please check my answers. THANK YOU. 1) The percent by mass of carbon in acetone, C3H6O is. Answer: 62.1% 2) What is the percent by mass of zinc, Zn, in ZnCO3? Answer: 52.3% 3)What is the percentage of water in the compound BaCl2 * 2H2O? Answer: 7.96% 4)How many atoms are in ...

Math!!!

Suppose Y ∼ N(μ=0, σ). Find σ so that the normal population contains 90% of its probability between -1 and 1. Please round your answer to two decimals.  . [Hint: The normal distribution is symmetric around 0, so you can simplify the problem and only ...

French

Could you please check these answers thanks so much. Directions: give own answers 1. Qu' est-ce que tu fais comme langues? Du français? De l'espagnol? Answer: Je fait du français. 2. Et tes copains, qu'est-ce qu'ils font comme langue(s)? Answer: Ils font de l'espagnol. 3. Qu...

algebra check

at 7a.m. the temperature was -15degree F by 1 p.m the temperature had increased by 18degrees F what was the temperature at 1 pm? -15+18=3 answer:3degree F Looks good to me.

prealgebra/ check answer please

What single discount is equivalent to two successive discounts of 15% and 7%? x= 100 [1-(.85)(.93)] = 100 (1-.79) =100 (.21) =21%

math

The function f(x)=2x+8/3x-7 is one to one. Find its inverse, and check your answer. f^-1(x)= I haven't one clue how to do this...help me pleaaaase someone!

Statistics- Need someone to check

Ok so i don't know how i got that answer i think i typed in a wrong formula or read something wrong. I got .8926 for the first one. And the second one i don't know what i am suppost to use from the first answer to get that. Can someone help me. It is known that about 20% of ...

Calculus

Determine the measure of A if 0 degrees is less or equal to angle A and if angle A is less or equal to 360 degrees. Tan A = 0 Answer is somehow supposed to be 0 degrees, 180 degrees, and 360 degrees, but don't know how to get the answer, just really confused. Sin A = -1

English

I need to check my answers. The assignment was to write the appositives and appositive phrases in the following sentences, along with the words they rename or identify. 1. Wilma Rudolph, another champion sprinter, also overcame a disability. *ANSWER* AP=another champion ...

Calculus

I have trouble finding the second derivative, my answer is a little off from the answer key. f(x)=(log(base2)x)^5 f'(x)=[5(log(base2)x)^4]/xln2 f"(x)=[20(log(base2)x)³(xln2)-(ln2+(x/2))(5(log(base2)x)^4)]/[x²(ln2)²] for the f"(x), is g(x)=xln2? It is a product so I think it...

Calculus (Normal Line, please check my work)

The slope of the line normal to the graph of 4 sin x + 9 cos y = 9 at the point (pi, 0) is: Derivative: 4cosx - 9siny(dy/dx) = 0 (dy/dx) = (-4cosx) / (-9siny) (dy/dx) = (4) / 0 Normal line = -1 / (4/0) Does this mean that the slope of the normal line is undefined, or did I do ...

Math

Combine like terms to simplify the expression. 1/_4+6+9y= Answer: 5y+6 2/ 20a+7+3= Answer: 20+10 3/_5k+9_2+9k= Answer: 4k+7 4/ 17+2.9h+3= Answer: 30+14 Simplify the expression. 5/ _4(3+d)+7d_d= Answer: _16+6d 6/ 8+5(j_5)+3j_1= Answer: 32+8j_1 7/ 9(b_3)+4(b_5)= Answer: 5b+22 8...

English

Can anyone check my essay? I could send the rubric for scoring. Thanks You have to include the essay itself, so we can check it. Respond to this post with the essay. Thanks for asking. Whats your question..?

dog behavior

please check my answer thanks What is one social characteristic that both wolves and humans share which may have helped the process of domestication ? I think it i thr formatio of extended families

Applied Dog Behavior

please check my answer thanks The best way to test a puppy for temperament is to A. chase it. B. ignore it. C. observe its general level of activity and excitability. D. shout and see what it does. I pickecd C

Teaching dogs Tricks

Please check my answer thanks Mimicking should be used only for behaviors that A. can't be elicited any other way. B. the dog can't perform well. C. are very involved. D. are difficult to lure I say A

child care mangement

children create _ when they talk about certain kinds of information many times. a. cultural schemes b. socialization strategies c. motivations d. attitudes I think its b please check my answer

Chemistry answer check

What quantity of heat is required to produce 5 mol of oxygen gas by this reaction? HgO(s) → Hg(l) + ½ O2(g), ΔH = +90.7kJ I calculated 90.7*5, but my online homework says its wrong how do I calcuate this?

science(check answers)

i don't think the answer could be A. so i pick B. One reason people around the world use coal as an energy source is: A. It is nonrenewable. B. it can be found many places C. it is a fossil fuel D. it cannot be used up

Social Studies ( Check my answer)

1. What group of people made up the largest percentage of workers in American industry during the late nineteenth century? Native Americans Immigrants *** Plantation Owners

HISTORY

11. The Spanish monarch Charles III established Venezuela, Colombia, and Ecuador under the viceroyalty of A. Bogotá. B. Rio de la Plata. C. Peru. D. New Granada. I chose C please can you check my answer

math help

What is the smallest number i must multiply 315 in order to make it a perfect cube? Please tell me the method you sed and how you got the answer. I've been doing guess and check and it is time consuming.

Physical Science

Hello! Thanks for checking my question out! ____ 2. Milk is an example of a (1 point) a) solution. b) homogenous mixture. c) colloid. d) compound. My Answer: C Could someone please check if I'm right? Thanks! - Da Fash

World History (check answer)

Which characteristic of the Avignon papacy drew harsh criticism? A. inclusion of women in Church services B. lavish lifestyle C. persecution of non-Christians*** D. worship of icons

CALCULUS. Check my answers, please! :)

The domain of f(x)=(1)/(sqrt(x^2-6x-7)) is (1, 7) [-1, 7] x > -1 or x < 7 ***{x < -1}U{x > 7} (-∞, -1]U[7, ∞) 2. In which of the following is y a function of x? I. y^2=9-x^2 II. |y|=x III. y=(sqrt(x^2))^3 I only II only III only ***I and III only I, II ...

Pre-Calculus

Help------I'm confused. I am trying to convert the linear equation 4x+3y-10=0 to polar form. Thus far, I have 2= r cos(theta -?????). I understand that I must get the arctan of 3/4 but I get the answer of 36.9. Is this correct and if not--what am I doing wrong. Thanks

Calculus

Find the amount of an annuity if $210/month is paid into it for a period of 20 yr, earning interest at the rate of 8%/year compounded continuously. (Round your answer to two decimal places.)

Calculus

Find the amount of an annuity if $210/month is paid into it for a period of 20 yr, earning interest at the rate of 8%/year compounded continuously. (Round your answer to two decimal places.) $

Calculus

Find the limit as x approaches infinity. sqrt(81x^2 + x)− 9x. I've worked this two different ways and have gotten 0 and 1/9, neither of which is the right answer according to the homework system??

calculus

Use the Left and Right Riemann Sums with 100 rectangle to estimate the (signed) area under the curve of y=−2x+1 on the interval [0,50]. Write your answer using the sigma notation.

Calculus

Find the number a such that the line x = a divides the region bounded by the curves x = y^2 − 1 and the y-axis into 2 regions with equal area. Give your answer correct to 3 decimal places.

pre calculus- math

$2500 is invested in an account that pays 12% interest, compounded continuously. Find the time required for the amount to triple. Round your answer to the nearest tenth of a year.

alGEBRA 2 help please would appreciate

x over (x+3) -x over(x-3)=x^2+9 over X^2-9 solve for x and check answer

science (check new answer)

please check my answser .A car driver accelerates to a speed of 35 mph and then takes her foot of the gas pedal.Even though she does not press the brake pedal at any time,she eventually rolls to a stop.which of the following most likely causes the car to come to a stop? A....

Math (pre-celc 12)

Write the expression as a single logarithm: 3log(a)-log(b)-(1/2)log(c) I want to check my answer. I got log(a^3/bc^(1/2))

Algebra

Please check my answer. Solve the system of linear equalities graphically. 3x-y<=6 x>=1 y<=3 For the answer I have: Equation in slope intercept form: Equation 1:y-intercept as ordered pair=> (0, -6) Equation 1: x-intercept as an ordered pair=> (2,0) Do I have ...

Physics Help

State the number of significant figures. 1) 809 Answer : 3 2) 0.0060 Answer : 5? 3) 0.00000095 Answer : 9? 4) 5.60 Answer : 3 5) 5.743 Answer : 4 6) 0.010 Answer : 4?

Chemistry

X2 + Y2 <=> 2XY 0.50 mole each of X2 and Y2 are placed in a 1.0 litre vessel and allowed to reach equilibrium at a given temperature. The equilibrium concentrations of XY is found to be 0.025 mol/L. What is the equilibrium cosntant for this reaction? Do I just get the ...

Pre Calculus HELP!?

The length of a day in Philadelphia, Pennsylvania, is given by the sinusoidal function, f(t), which represents the number of hours of daylight t days into the year: f(t)= 10+2.8sin(2pi/365)*(t-1.35). How many hours of daylight are there on the 100th day of the year? Round the ...

other Quadratic equations

The problem is 7x^3-x+1=x^3+3x^2+x. Find all real answers. I came upwith two answers 3x^2=1 and 2x=1/2. The first answer just does not look right. I must be forgeting something! You can check them by putting in x=1/4 (the second answer), and then x=+- sqrt(1/3) These are three...

grammar

please check and let me know if this is correct. What the teacher is asking for for the sentence be changed to is to the left. Rewrite the following sentences, focusing on the grammar area specified in the left column. To enter your answer, click next to the number and begin ...

calculus

Annual sales of bottled water in the country in the period 1993-2003 could be approximated by the function below, where t is time in years since 1990. Were sales of bottled water accelerating or decelerating in 2000? How fast? R(t) = 10 t**2 + 100 t + 2400 text( million ...

algebra

please review the questions and table and check my answers. tank you tutors. table planets' orbital velocity planet orbital velocity (mi/s) mercury 29.74 venus 21.76 earth 18.5 mars 14.99 jupiter 8.12 saturn 6.02 uranus 4.23 solve. show your work. express the answer in ...

Math

Jake can carry 6 1/4 pounds of wood in from the barn. His father can carry 1 5/7 times as much as Jake. How many pounds can Jake's father carry? Answer: 1 3/28 Can you please double check the above answer. I don't know if it is right or wrong. 2. A glass can hold 3 1/3 cups of...

Math

Could someone please check my math questions? My answers are under the questions... 32. Six times a number less than ten is eight. Find the number. a. 1/3 b. 3 c. -1/3 d. -3 My Answer ~ b 33. Jane works at the public library after school. She makes $7.00 per hour. She cannot ...

SS7R - HW Check

I'm going to repost my homework questions because now I'm all over the place and confusing you. Please delete my other posts. 1. The ___________ states the responsibilities of the government and protects the rights of states and citisens answer - constitution. 2. to keep ...

Ethics

please check my answer thanks :) Answer True of False to the following... 1. All pt authorzations to relase medical info are sufficient authorize relase I said True 2. All jurisdictions require both a subpoeana ansd a relase from the pt to relase medical records I said false

French

I would like to double check my work: A. Invert the following: Est-ce qu’elle veut boire un apéritif? Answer: Bois qu'elle un apéritif? B. Make the following statement negative: Nous allons au cinéma et au théâtre. Answer: Nous n'allons pas ni cinéma ni au théâtre.

physics (check my answers)

When the nuclear fuel in the sun is gone, the sun will collapse to a a. black hole b. white dwarf c. supernova d. neutron star My answer: I think its a black hole. If the mass of the Earth were suddenly doubled while the radius was unchanged, your weight would be? My answer: ...

Please check my calculus

A conical tank has a height that is always 3 times its radius. If water is leaving the tank at the rate of 50 cubic feet per minute, how fast if the water level falling in feet per minute when the water is 3 feet high? Volume of a cone is V=1/3(pi)r^2h A. 1.000 B. 5.305 C. 15....

English

Please check my answer tahnks :) Choose the plural noun that is spelled correctly. Phenomenons pianoes Father-in-laws Editors in cheif I picked Phenomenons

Enghish

Please check my answer thanks :) In the sentence "Although the book was more than 50 years old, it still contained helpful information", the word although is what. I said it's adjective

dog behavior

please check my answer thanks True or False Edward C. Thorndike studies the effects on dogs behaviors using a reward system I said True

Health/ Basic Clinical Procedures

please check my answer thanks For which of the following procedures should you wear gloves ? A veinipuncture B CT scan C EKG D hand washing I picked A

Health/ Basic Clinical Procedures

please check my answer thanks True or False Assessing a patient through the use of a stethoscope is called ausculation I said True

Health/ Basic Clinical Procedures

please check my answer thanks true or false Taking your temp digital it does not come in contact with mucous membranes I said true

dog behavior

please check my answer thanks so much for your help. True of False generalization means The tendecy to respond to stimuli resmbling the conditioned stmulus I said True

Algebra

Could someone please help me figure out this question. If I paid $76.08 for something that was 40% off, what was the regular price? I got $127.98 but when I check my answer I am off by 2 cents. What am I doing wrong?

Math(Please check)

g(x) = (3/2)^x+2 I need to find the intercepts. My teacher told me to press trace on my graphing calculator to find them. I got x = 0 and y=3 everything else is decimals so is my answer just (0,3)?

math

A caterer offers a choice of five desserts from a list of eight for the dessert bar at the prom. How many different groups of desserts could be served? please check my answer = 120

math

If a McBurger employee is expected to work four of the seven days in a week, how many different weekly schedules are possible for the employee? Please check my answer = 840

Math 115

Please check answers 461mm=_____m answer 461/1000=0.461m Second one 20lb= 320oz 20lbs*16ounces= 320oz

Science(egg in vinegar) PLease check my answer

what biological model does the egg represent? stomach it shows what happens to protein iif you put it into an acid.

MATH ✿╣Check╠✿

what is the surface area of a sphere with a radius of 5 meters rounded to the nearest square meter? MY ANSWER: 314m^2 (is it correct?)

please check my answer!!!

through their study on earth, geographers learn how earth and its people affect ? human health the solar system *** each other political systems

Check Answer!!

You deposit $4,300 in an account earning 3.5% interest compounded semiannually. How much will you have in the account after 9 years? 4300(1+.035/2)^(2x9) ~~ 5876.08

science: plz help Mrs. Sue

Which of the following is a behavioral adaptation of a spider? a. poisonus venom b. web spinning c. eight legs d. body color My answer is a. plz check.

Physics

I thought I did the problem right, but I don't think I came out with the right answer! Please someone check to see if I got this problem right. Calculate the force of gravity between Earth (mass=6.0*10^24 kg) and the moon (mass=7.4*10^22 kg). The average Earth-moon distance is...

Precalculus

Calculate the solution set. x^2+y^2+8x=-15 9x^2+25y^2=225 My work: I did elimination...multiplied -25 to the top equation and got..... -16x^2-200x-600...I then used quadratic formula ... And got -7.5 and -5..... Is -7.5 an EXTRANEOUS SOLUTION because when I plugged -7.5 in for...

calculus

Hi i need help in this. Some of the parts i got the answer but some i don't. please help! A ship uses $(7v^2) of fuel per hour when travelling at a constant speed of v km/h. Other expenses in operating the ship (i.e. crew and equipment) amount to $345 per hour. The ship makes ...

Algebra( check my answers)

1. Juan deposited $200 in a savings account earning 3% interest over 2 years. What was the total amount of interest earned after 2 years? $12 $24 $120 ( my answer) $240 2. Mary borrowed $11,000 at 5% interest for 4 years. What was the total interest? $22 $220 $2200 (my answer...

Pre-Algebra Checkk

1. Convert the rate using dimensional analysis. 30 miles/hour = _______ feet/second a. 0 b. 44 c. 43 d. 2 answer: b 2. Convert the rate using dimensional analysis. 16 feet/second = _____ yards/minute a. 240 b. 120 c. 10 d. 320 answer: b Can someone check my answers please?

Math

There are 72 boys and 90 girls on a math team. For the next competition, Mr Johnson would like to arrange all the students in equal rows with only girls and only boys in each row. What is the greatest number of students that can be in each row? Answer: 72 + 90=162 162/2=86 Can...

Math

1. Rishi ram obtained an installment loan for $3,000.00. He agreed to repay the loan in 6 monthly payments. His monthly payments is $516.50. What is the APR? MY ANSWER=0.33% 2. Tim Newman took out a simple interest loan of $1500 at a 10 percent interest for 12 months. After 4 ...

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