Calculus (Answer Check)
88,703 results, page 35

precalculus
Can you check my answers? 1.Find the 5th term in the expansion of the binomial. (2x  4)8 458,752x3 286,720x4 458,752x3 35,840x4 answer: d 2.Find the 3rd term in the expansion of the binomial. (x  2y)12 264x10y2 1760x9y3 264x10y2 1760x9y3 answer:a 
Calculus Help!
At a price of $7.5 per ticket, a musical theater group can fill every seat in their 1500 seat performance hall. For every additional dollar charged for admission, the number of tickets sold drops by 95. a) What ticket price maximizes revenue? Round your answer to the nearest ... 
Foreign languages
Can you check these last sentences? Thank you, Writeacher! 1) He is learning to drive a moped. 2) I'm teaching him to speak French. 3) I wonder whether to reply to his email or not. 4) We were obliged to postpone the meeting. He was the first to hand in his test. He is the ... 
Nutrition of the young child
Which one of the following lunches provides in both color and texture? A.Egg salad sandwhich,applesauce,celery hearts,milk. B.Egg salad sandwhich,banana slices,buttered squash,milk. C.Egg salad sandwhich,raisins,wax beans,milk. D.Egg salad sandwhich,green grapes,raw carrots,... 
social studies
how did women help prepare for the civil war??? i cant find in s.s book you should double check your book. if you cant find it in there you could use the internet, but i would check the book 
calculus
Consider the following shaded region. Find the area S of this region if a = 6, b = 3. (Give an exact answer.) The two graphs intercept at 0 and the other limit is not given. The integral is int(axx^2)(bx. So y=ax+x^2 is the graph on top and y=bx is at the bottom. 
Calculus
Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Then find the area of the region. 2y=3sqrt(x), y=5, and 2y+3x=6 I tried this many times and i am getting it wrong. Please show me how you got to the answer. 
calculus
A management consultant estimates that the number of hours,h, per day that employees work and their daily pay of p dollars are related by the equation 60h5 = 2,000,000 = p3. Find dh/dp at p = 200 and interpret your answer. 
calculus
answer the following for the given quadratic function f(x)=x^22x+1 a. Does the graph of f open up or down? b. What is the vertex of (h,k) of f? c. What is the axis of symmetry? D. What is the intercepts? E. What is the domain? F. What is the range? G. On what interval is f ... 
Calculus
Use Newton's method with the specified initial approximation x1 to find x3, the third approximation to the root of the given equation. (Round your answer to four decimal places.) 1/3x^3 + 1/2x^2 + 8 = 0, x1 = −3 I got 3.4808, but it's wrong. Help? 
Language Arts
Rewrite each sentence below correcting the double negative. 1. He can't talk nicely to nobody. 2.The lady won't never find her lost cat. Answer: The lady won't ever find her lost cat. 3. There aren't no pictures in that book. Answer: There are no pictures in that book. 4. Jose... 
Economics
Could you please check these. Directions: Match each statement with it's correct definition or item. Here are the words productivity subsidy supply schedule supply elastic surplus profit price floor government regulations equilibrium price supply 1. amount of a good or service... 
Math
As you can see from my nickname, math and I don't have great history. That is why I would like someone to check my answer. Q: Samantha types 40 words per minute. How many words can she type in 8 minutes? My Answer: 320 How I got to this: This question wants me to do ... 
cultral diversity
Help! check my answer Emergent literacy skills are significantly enhanced by a. the educational or professional level of one or both parents b. engaging in literacy events with other persons,especially adults. c.the family's socioeconomic ststus and aspirations. d.quanlity of... 
Calculus
I'm having trouble trying to figure this problem out, I know the variables of the problem but I don't seem to get the right answer here is the formula that i'm using: A = P (1 + r/n)^n * t. Here is the problem: If Joe deposits $12,000 into an account that yields 3% annual ... 
calculus
8). Part 1 of 2: In the solid the base is a circle x^2+y^2=16 and the crosssection perpendicular to the yaxis is a square. Set up a definite integral expressing the volume of the solid. Answer choices: integral from 4 to 4 of 4(16y^2)dy, integral from 4 to 4 of (16+y^2)dy... 
English
Thank you for your corrections. Can you check these questions and answer them (if you can). 1) Do you happen to know the name of a website where I can improve my English speaking and listening skills? 2)I wonder if it would be possible to talk to some English native speakers ... 
Science please check my answer
Which of the following fossil types is best described as forming when minerals replace all or part of an organism's body? A) A mold B) A petrified fossil*** C) A cast D) A trace fossil 
chemistry
Element x Isotope 55x 60% Isotope 56x 30% Isotope. 57x 10% 55× 60 =3300 56×30=1650 57× 10= 570 Add them up5520 divide by 100 the atomic weight of x is 55.2 Pls check if this is correct , answer and method 
CHemistry....Please double check DrBobb
What mass of ethylene glycol C2H6O2, the main component of antifreeze, must be added to 10.0 L water to produce a solution for use in a car's radiator that freezes at 23C? Assume density for water is exactly 1g/mL. First we find out the freezing point: =(23.0)(0.0_ =23.0 ... 
Chem Check Please!!!
1) As bound ligands, which of the following causes the largest splitting of dorbitals? a. phen b. H2O c. I– d. CN– e. C2O4^2– Answer D 2) The spectrochemical series a. lists ligands in order from monodentate to hexadentate. b. lists ligands in the order of their ... 
probability Please check answer
A bag contains 7 red marbles, 2 blue marbles, and 1 green marble. If a marble is selected at random, what is the probability of choosing a marble that is not blue? 7 red marbles plus 1 green marble = 8/10 = answer = 4/5 
Algebra II
Solve x^2>_2x+24 x^22x24>=0 (x6)(x+4)>=0 So as long as x>6, it works. But what about two negatives? Try x=5..checks...check me on that. So it looks as if inf<x<=4 works, and 6<=x<inf works. check that. 
General Chemistry
Answer Check... A 3.00L sample of gas was collected over water at 45 degrees Celsius. The wet gas exerts pressure of 1.50atm. When dried the sample occupies 1.80L and exerts a pressure of 1.77 atm at 80.0 degrees Celsius. What is the vapor pressure of water at 45 degrees ... 
Health/Law
Please check my answer :) Martha the medical assistant is legally compelled to give her testimony in a under oath in a malpractice lawsuit Why must she do this ? I think it might be she got some type of subpoena or She is a key witness in the case 
Child Care
Samuel is beginning to realize that he has a talent for art,and he feels good about it. Which of Erikson's stages may he reached? A.Autonomy vs.shame B.Initiative vs. guilt C. Industry vs. inferiority D. Identity vs. confusion I pick the letter D can someone check my answer. 
SOCIAL STUDIES PLEASE HELP CHECK ANSWER
Which example best shows the United States as a mediator? A. Debating human rights with China**** B. Supporting democracy in the Philippines C. Promoting a peace agreement in Bosnia D. Encouraging the end of apartheid in Africa 
World History
What was one of Maria Theresa's successes as an absolute monarch? A. uniting the German states** B. forcing Frederick out of Silesia C. strengthening royal power D. adding Hungary to the Hapsburg empire I said A please check my answer. 
Physics  check answers please
1. A boy pushes a car to slow it down while the car is rolling horizontally down the road. If the boy pushes backwards on the car with 10N of force as the car rolls forward 3.0m, the amount of work done by the boy is: a)30 b)0 c)3.3 J d)30 N•m e)300J my answer: a 2. what is... 
AP Calc for Reiny
You did just fine and your second derivative is correct, if you meant (6y^2  4x^2)/(9y^3) except they took it a bit further. notice your numerator is 4x^2 + 6y^2 from the original 2x^2  3y^2 = 4 , then 4x^2  6y^2 = 8 , and 4x^2 + 6y^2 = 8 to get their 8/9y^3 If you were... 
AP Calc for Reiny
You did just fine and your second derivative is correct, if you meant (6y^2  4x^2)/(9y^3) except they took it a bit further. notice your numerator is 4x^2 + 6y^2 from the original 2x^2  3y^2 = 4 , then 4x^2  6y^2 = 8 , and 4x^2 + 6y^2 = 8 to get their 8/9y^3 If you were... 
calculus
Locate the position of Sun,using calculususing differential euation on sign curve of Sun's path. 
Law
Please check my answer thanks :) Mary files a suit in federal court. What would give the court subject matter jurissiction? I said the claim involves a federal statue 
Health care
please check my answer thanks :) Which health insurance program is designed to complement the retirement surivior and disability insurance enacted under Titlr II of the SSA I said Medicare 
dog behavior
please check my answer True or False The following statement describes classical conditioning. It involves the pairing of a conditioned stimulus with an unconditoned stimulus I say True 
Math check 2
Solve: (t+24)/(t^2t56)+7/(t8)=3/(t+7) I do know that (t^2t56) can be factored out to (t8)(t+7) so I have the equation as (t+24/(t8)(t+7) +7(t+7)/(t8)(t+7)3(x8)/(t8)(t+7) (t24) + 7(t+7)=3(t8) solve for t. The choices are: a.)97/5 b.)122/5 c.)13 d.)13/5 Math ... 
Assistance Dogs
Please check my answer thanks :) Service dogs are often taught to recall to a person A. sitting in a wheelchair. B. lying down. C. standing with crutches. D. kneeling down I picked A 
chem can u check answer please
the solubility of silver sulfate in water is 0.223%(w/v) at 35 degrees celsius.calculate the solubility product of this salt at this temp. I got 1.46 X 10^6 M is this right please thanks Andy 
5th grade math
ms. sue can you help me with another problem? whatnis the median of the following number? 24,99,101,93,14,29? by the way can you please!check my last problem that you posted to me an hour ago here is my answer is 20 the median 
Math(can you just check my answer please)
Lines x and y intersect to form angles 1,2,3, and 4. The measure of angle 3 is (3x  9) and angle 4 is 111 degrees. Can you help me make a equation I think the equation is 3x9 + 11 = 180 is this correct 
Algebra
After solving a rational equation, why is it important to check your answer? How is this done? What happens if you are checking a solution for the rational expression and find that it makes one of the denominators in the expression equal to zero? 
algebra
after solving a rational equation, why is it important to check your answer? How is this done? What happens if you are checking a solution for the rational expression and find that it makes one of the denominators in the expression equal to zero? 
Science 7R  HW Qs. Check (plzzz read!)
what are the carnivores shown in this food web? answer  mountain lion, hawks, deer, snakes am i correct?????? btw  i found it in the food web in my worksheet 
Check my answer?
Conditional statement based on a Venn diagram 2 circles: large circle says quadrilaterals smaller inner circle says squares If a shape is a square then it is a quadrilateral. 
Algebra (check answer)
The expression 17n + 11 represents the perimeter (in feet) of the triangle. Two sides are measured at 5n + 6 and 4n + 5. Write an expression that represents the measure of the third side. Would 8n + 22 be correct? 
His
4. The United States cut off sales of oil to Japan after the A. Japanese occupation of southern Indochina. B. Japanese occupation of Hong Kong. i chose B please can you check my answer 
Chemistry(please check my answer)
A radioactive isotope of radium (Ra226) has a halflive of 1620 years. How much of this isotope remains after three (3) halflives? A. 1/2 B. 1/4 C. 1/8*** D. None 
Social Studies
In Chinese society, the merchant class ranked below the 1. farmers and aristocrats 2. landowners and traders*** 3. aristocrats and priests 4. bankers and farmers Can someone please check my answer? 
Math
1. Which equation below matches the relationship shown in the table? Table X: 0, 1, 2 Y: 0.5,3.5, 6.5 A. y=2x+0.5 B. y=2x+2 C. y=3x D. y=3x+0.5 Please help, thank you. BTW I would share my answer for anyone to check but I am not sure how to do this so please give the process... 
Calculus part 3 so sorry
y = e^2xsin3x Find the derivative. So I used the product rule and I got sin3x(e^2x)+cos^3x(e^2x). But the actual answer is sin3x(2e^2x)+cos^3x(3e^2x) Where the the 2 and 3 before the e come from? 
calculus
PLEASE help me. y=log(x+1) a. Write the equation as an exponential equation and solve for x. b. Switch the variables in your answer to part a (Change x to y and vice versa). Write the new expression. 
Calculus
A spring has a natural length of 24 cm. If a 27N force is required to keep it stretched to a length of 30 cm, how much work W is required to stretch it from 24 cm to 27 cm? (Round your answer to two decimal places.) 
calculus
Find the equation of the tangent line to the curve y=sqrt(x) at x = c. Put the answer in slope intercept form y=mx+b. Use the definition of the slope of the tangent with no short cuts. 
math
A material has a halflife of 12 hours. If initially there are 4 grams of the material, how much is present after 8 hours? I know the answer is 8/3, but how would you solve this using calculus? please help. 
Calculus
The function defined below satisfies the Mean Value Theorem on the given interval. Find the value of c in the interval (1, 2) where f'(c)=(f(b)  f(a))/(b  a). f(x) = 1.5x1 + 1.1 , [1, 2] Round your answer to two decimal places. 
Calculus
Create a function which has the following properties: a. It has a horizontal asymptote at y=2 b. It has a discontinuity at x=2 which is not a vertical asymptote c. It has no other discontinuities or asymptotes Explain how your answer satisfies the previous properties. 
Calculus
Determine whether the sequence converges or diverges. If it converges, find the limit. (If an answer does not exist, enter DNE.) limit n approaches infinity of an = e^(−6/sqrt(n)) 
calculus
Find the interval on which the curve of y= the integral from 0 to x of 2/(1+3t+t^2)dt is concave up. Can someone please explain? I'm so confused about how to find the answer, all I know is if the 2nd derivative is positive then it's concave up. 
Math
Please check my answer thanks :) What is the dollar value of ending inventory if there was 300 units on hand Dec 31 Round your answer to the nearest dollar Use the FIFO method Inventory of windshelid wipers Jan 1 300 units @$11.00=3300 Mar 1 150 units @ $10.5=1575 Jun 1 200 ... 
accounting
On, April 1, 2015, Lester Company received a bank statement that showed a balance of $ 8,950. Lester showed a $8,000 checking account balance. The bank did not return check No. 115 for $750 or check No. 118 for $370.00. A $900.00 deposit made on March 31 was in transit. The ... 
math
Hi I need help with 5 questions..some of it is confusing to me. I just want to make sure my answers are right. 1.6^7 x 6^4 6^3 ; 6^11 ; 6^28 ; 6^11  my answer is 6^3 2. 7/ 7^5 = 7^2 (supposed to find the missing value which is the other exponent on top of the 7 that's ... 
Health
please check my answer thank you What is the first thing you should do if your bare hands accidentally comes in contact with a pt's blood. A report it to your doctor B wash your hands with and water C apply gloves D obtain a hep B shot I picked B 
Health/ Basic Clinical Procedures
please check my answer thanks True or False A physical or mechanical device used to remove healyh hazzards from the work place is called personal protective control I said True 
please check(Social studies)
please checkk 3. Mexico is building a stronger workforce by A.holding free elections B.permitting remissions C.eliminating competition D.investing in education(I PICK D.) if you answer i really hope your correct ! 
Social Studies
In return for offering the throne to William and Mary, it was demanded that all laws had to be approved by? A: Parliament B: King James C: The Catholic Church D: The Protestant Church My answer is A. Can someone please check if this is right? 
filling procedue
You have an inactive file. How do you decide if it must be sent to the archives or if it should be destroyed? A. Check the records retention schedule. B. Ask your employer. C. Ask the person who asked to have it filed. D. Make a decision on your own. My answer is C 
precalculus
Can you check my work? sketch the curve represented by the parametric equations. Then eliminate and write the corresponding rectangular equation whose graph represents the curve. x=2+3cosθ y=2sinθ answer: cosθ=x/5 sinθ=y/2 cos^2θ + sin^2θ=1 (x/5)^2+(y/2)^2=1 (x/5)^2+(y/4... 
World History (Check answer)
4. What practices among the Moche did the Inca adapt to unify their empire? A. Construction of roads B. etching of geoglyphs C. planting on artificial islands D. sharing power among Kings of citystates Is it A? 
Geography
how did the decade of prosperity affect the lives of many MexicanAmericans in Texas They became wealthier They became migrant laborers They Moved to other states They Entered New Industries My answer is the 3rd one please check that for me! 
Chemistry check and help
what is ... Sodium bisulphate hydroiodic acid ammonium dihydrogen phosphate Zn(HCrO4)2 Calcium metal ferrous bromide sodium carbide phosphate radical Check... sodium bicarbonate NaHCO3 
CALCULUS DERIVATIVES CONTINUITY
Let f be the function defined by the piecewise function: f(x) = x^3 for x less than or equal to 0 x for x greater than 0 Which of the following is true? a) f is an odd function b) f is discontinuous at x=0 c) f has a relative maximum d) f'(0) = 0 e) f'(x) > 0 for (x is not ... 
Calculus
Let f(x)=5x2+5x−12. Answer the following questions.Find the average slope of the function f on the interval [−1,1].Verify the Mean Value Theorem by finding a number c in (−1,1) such that f′(c)=m¯¯¯. 
Calculus
Using l'hopitals rule, evaluate the following: Lim x>infinity Inx/2(x)^1/2 Limx>0 (1/x  1/e^x 1) I tried both multiple times and I'm still not getting an answer. For the first one I tried l'hopitals rule 3 times and I'm still getting infinity over infinity for an ... 
dog behavior
please check my answer thank you very much for your help The Premack princciple suggets that A. reinforcement is highly frustrating the dog B. A more desirable activity can serve as a reinforcer for aless desirable activity C reinforcement isn't dependent on the dog ... 
Trig
Can someone check my answers so far? 1. Find the exact value of tan(3ð) Answer: tan(3ð) = tan (3 + 2ð) = tan (ð) = tan (ð + 2ð) = tan(ð) = sin (ð)/cos(ð) = (0)/(1) = 0 Exact value is 0 2. Solve triangleABC is C = 90 degrees, B = 20 degrees, and b = 10. Round the... 
Reading
In which sentence about A Christmas Carol is the word meager used correctly? a) The Ghost of Christmas Future used his meager finger to point to Scrooge's tombstone. b) Scrooge gave Adam a meager amount of money to reward him for buying an enormous turkey. c) Scrooge's ... 
algebra
please write an explaination why (x^3)(x^4) is not x^12. I am confused thank you. it is not the answer because, first of all, try replacing x with another number, in this case, let's say two. (2^3)(2^4)= 128, and if you try 2^12, you do not get 128, instead your answer would ... 
calculus
Suppose f (1) = 2, f ΄(1) = 3, g(1) = 5, and g΄(1) = 4. Evaluate (f g)΄v at x = 1. Answer 12 7 10 23 
Calculus Help Please!!! Check
When a cold drink is taken from a refrigerator, its temperature is 5°C. After 25 minutes in a 20°C room its temperature has increased to 10°C. (Round the answers to two decimal place.) (a) What is the temperature of the drink after 60 minutes? (b) When will its temperature ... 
language arts (check answer)
please check this... which of the following shows a correctly punctuated compound sentence? A.As the miners,slept soundly,the thieves made off with all their supplies and gold. B.As the miners slept,soundly the thieves made off with all their supplies and gold. C.As the miners... 
MATH
I have math questions I need to check my answers can you please help me 1. 4x4x4x4x4 as a power of 4 answer 4 to the fifth power 2.a bedroom is 10 ft by 11 ft what is the perimeter? answer 42 ft evaluate 72/89/3=6 3.Jamal is fencing a rectangular field that measures 25 ft by ... 
Statistics
# Statistics  bobpursley, Wednesday, October 6, 2010 at 4:30pm second applet. Set mean to zero, std deviation to .8 oz check below enter shaded area .05 Notice the answer comes up 1.31 ounces. So the mean must be 5.3+1.31=6.61 Put that in for the mean, and verify. You should ... 
English
Which sentence is correct? 1) Check the manufacturing dates of the products. or 2) Check the manufacture dates of the products. 
Science URGENT
Is there any website or any way I can get the science probe 10 check your understanding answers cause I want to check my answers? 
English
I urgently need you to check these sentences. Whad do you think I should do? 1) I graduated with honours in modern languages and I know how important memory is in learning a foreign language. 2) The headmaster of the school I'm teaching at has warned me not to check and ... 
computer forensics
1.Check the operating system’s swap file. Using the WinHex to go through the swap file, have you found any interesting results? 2.Design a plan to check the ram slack and drive slack on your computer with the tool WinHex. Report your findings. 3. Use WinHex to check ... 
Math (Calculus) (Related Rates)
A boat pulls away from a dock at 2 m/s, but the operator has neglected to remove the tow rope used to pull the boat up to the dock. This rope runs thru a pulley which is attached to the dock at a point 1 m higher than the point at which the rope is attached to the boat. A) How... 
calculus
A firework is launched at the rate of 10 feet per second from a point on the ground 50 feet from an observer. To 2 decimal places in radians per second, find the rate of change of the angle of elevation when the firework is 40 feet above the ground. Type your answer in the ... 
Physics check
A speeder traveling at 41 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 3.3 m/s2. To the nearest tenth of a second how long does it take the policeman to catch the speeder? Im sorry I am new to physics this is my first year and... 
math answer check
14. Knowing that you use 245 KWH 7 a.m. – 7 p.m. and 165 KWH 7 p.m. – 7 a.m., answer the following questions using the chart below: Constant Usage $0.05324/KWH Daytimer (Most usage between 7 a.m. – 7 p.m.) As long as most power used is 7 a.m. – 7 p.m., then you receive... 
science(check answers)
can someone check my answer thanks ! 2.The ability to do work or cause change is called A.velocity. B.energy.(I PICK B.) C.transfer. D.friction. 3.Which type of energy is demonstrated by a person jogging? A.electrical energy B.nuclear energy C.electromagnetic energy D.kinetic ... 
Calculus
You have a conical tank, vertex down, which is 12 feet across the top and 18 feet deep. If water flows in at a rate of 9 cubic feet per minute, find the exact rate of change when the water is 6 feet deep. You know the rate of dV/dt (inflow), and you can get the volume of a ... 
Ed. Tech
When you save documents, it is important to check the blank at the top of the navigation window to ensure you are saving your file in the correct location. A. address bar B. insert ribbon C. file type D. file name Is the answer D? 
calculus
One side of a right triangle is known to be 45 cm long and the opposite angle is measured as 30°, with a possible error of 1°. (a) Use differentials to estimate the error in computing the length of the hypotenuse. (Round the answer to two decimal places.) 
Calculus
Find a unit vector in the direction of v = (1,1). Write your answer as a linear combination of the standard unit vectors i and j. Round each component to the nearest hundredth, if necessary. A 0.71i  0.71j B 0i  0j C 1.41i  1.41j D 1i  1j E 2.83i  3.83j F 1i  1j 
Calculus
Oil spilled from a ruptured tanker spreads in a circle whose area increases at a constant rate of 7.5 mi^2/hr. How rapidly is radius of the spill increasing when the area is 8 mi^2? I tried using A=(pi)r^2 and dA/dt=2(pi)r(dr/dt) and plugging in 7.5=2(pi)8(dr/dt) but the ... 
Calculus
For the function ƒ(x) = x2 find the slope of secants from the point (2, 4) to each of the following points. (3, __ ) (2.5 , __ ) (2.1 , __ ) (2.01, __ ) (2.001, __ ) Using the pattern from question 1, what do you think the slope of a tangent at the point (2, 4) would be? ... 
calculus
The revenue from the sale of x units of a product is represented by the following formula. R = 10(5x + 1)–1 + 70x – 11 dollars Find the marginal revenue when 50 units are sold. (Round your answer to the nearest cent.) 
Calculus
Which plane goes through the origin and is perpendicular to the line r=(2,2,1) + s(2,3,4), seR? a) 2x2y+z=0 b) 2x+3y4z=0 c) 2x+3y+z4=0 d) none of the above. I got D, none of the above. I have substituted and couldn't find the answer equal to zero. 
PreCalculus
State the domain and range of the relation y = 2x + 3 My answer: y= 2x+3 y= 2(1)+3=5 domain: 1 range: 5 This is how my book showed me how to do it. I just wanted to make sure I did it right. If not could you please give me an example?