Calculus (Answer Check)
88,560 results, page 94

Calculus
How do we integrate [(cosx)^2(nx)(sin(nx))]/[a(cos(nx))] dx? 
calculus
Find the derivatives of the following function: i)y=3x^3 +2x^2 + x2 
Calculus
Find the limit lim tan^2(7x)/9x x> 0 
PreCalculus
If w varies directly as z and w = 9 when z = 6, find w when z = 3. a) 0 b) 4.5 c) 2 d) 4.5 
PreCalculus 12
Solve using logarithm: 2^(4x+1)=3^x 
Math/calculus
Graph f (x) = 3cos (4pix pi/2) 2 
Calculus help
Lim(x>inf)=2000x^4/200x^4= 10 
Calculus  Identity crisis
A function has f''(x) = 10 and has f'(4) = 0 and f(2) = 4. Find f(x). 
Calculus
what is average value of cos(x) on the interval [3,5]? 
AP Calculus AB
Hi. Please help me with the following question: lim x>1 (x)/(ln(x)) 
Calculus
What is the area of the inner loop of r = 3+6sinΘ? 
Calculus
Suppose y = sqrt(2x + 1), where x and y are functions of t. (a) If dx/dt = 15, find dy/dt when x = 4. dy/dt = ? 
chemistry
In the chemical plating experiment zinc powder is dissolved in a hot NaOH solution to form sodium zincate according to the following reacton: Zn(s) + 2NaOH(aq) Na2ZnO2(aq) + H2(g) Answer true or false for each of the following statements regarding the reaction above. Zn(s) is ... 
Math algebra (check plz)
ok say i was trying to find y in this equation 2x + 3y + 6z =4392. I was given x=37891.5y , and z = 531. so i did the working and ended up with 75783y+3y=7578 . If i do the math correctly ill end up with 0y = 7578 :S im pretty confused, can someone clarify if that would be ... 
English
Could you check this exercise, I had to complete the text. I wrote my answer with capital letters. Thanks so much When I first met Steve, our senior manager, he seemed to me rather PATIENLY and somewhat DECISIVE especially when it was necessary to take some serious decisions ... 
accounting
CHOI ENTERPRISES Inv. No. Check Date Description Name or Date No. Terms Amount Dec. 16 Merchandise sold (cost $4,600) Hanna Seppa 916 2/10, n/30 $7,700 17 Received credit memo on returned merch. Funk Company Dec. 15 1,040 17 Purchased office supplies KK's Supply Company Dec. ... 
math (double checking)
I've posted this question before but I forgot to say that I was dealing with polynomial inequalities (not sure if that makes a difference) The question is: Solve the following polynomial inequalities. (9 marks) 4x  5 ≤ 2(x  7) x^3  5x^2 + 2x ≥ 8 2(x^3  2x^2 + ... 
MATH
WHY IS IT I NEVER GET AN ANSWER TO A QUESTION? IT SAYS I HAVE SUCCESSFULLY SUBMITTED THE QUESTION, BUT NEVER RECEIVE AN ANSWER. HOW DO I ACCESS AND ANSWER IF IN FACT, ONE IS POSTED? 
Differentiation
for the curve x^2+z^2+2gx+2hy=0 value of dy/dx at(0,0) is A. g/h B. g/h C. h/g D. None Please help me. In the answer page it shows option A as answer. I don't know deeply of differentiation . Please could you help me by explain how the answer is A 
English
Have a question on Simple Verb Tenses. Need to reswrite each sentence, using the correct form of the verb in parentheses with s,ed,or will.. Thank for looking and helping me~~ 1. Long ago Plutarch___ stories of Greeks and Romans. (RELATE) Answer=related 2. Today we___a person'... 
Math
2. Rename .709 as a percent. a. 709% b. 70.9% * c. 79% d. 7.09% 4. Alice plays basketball. In one game she shoots 21 free throws and makes 81.25% of them. Estimate how many free throws she makes. a. about 16 b. about 2 c. about 20 d. about 14 5. Estimate 48% of $20.00. a. ... 
Physical Science
Hello! Thanks for checking my question out! ____ 4. Water is a compound because it (1 point) a) can be broken down into simpler substances. b) always has two hydrogen atoms for each oxygen atom. c) is made of water atoms joined together. d) both the first and second choices ... 
CalculusRationalizing Denominator
I am very confused on how to rationalize a denominator, it just gets harder and harder.*will be using the V symbol again as a square root symbol.* I get how to rationalize something simple as V2/V7, I would get V14/7 as the answer, but I get confused on how to solve 1/V6 +2, ... 
Calculus
The tank shown is full of water. Given that water weighs 62.5 lb/ft3, find the work required to pump the water out of the tank. The tank shown is a hemisphere with r = 5 ft. The water is to be pumped out at the top. First I solved for ri, ri / (5  xi) = 5 / 5 ri = 5  xi Vi... 
Math
So she saw 461 dolphins that are 5 year so we don't need to estimate on this problem. So I did 461/5 is 92 is the answer. Then the said how many did he spot per summer in the 5 summers he worked so I think we need to divide the answer which is 92 and the 5. 92/5 18 is your ... 
maths
a mathematics question contained 20 items. every wrong answer scores 2marks, every correct answer scores 4marks and no mark for no answer. find the maximum possible score 
calculus
Find complete length of curve r=a sin^3(theta/3). I have gone thus (theta written as t) r^2= a^2 sin^6 t/3 and (dr/dt)^2=a^2 sin^4(t/3)cos^2(t/3) s=Int Sqrt[a^2 sin^6 t/3+a^2 sin^4(t/3)cos^2(t/3)]dt =a Int Sqrt[sin^4(t/3){(sin^2(t/3)+cos^2(t/3)}]dt=a Int Sqrt[sin^4(t/3)dt =a ... 
english
Could someone check mty work? Which of the following would not be a good strategy for delivering a speech? Make sure your presentation is running properly Start talking over the audience to quiet them down (anser) Use correct grammar and well formed sentences Look directly at ... 
algebra can somecheck my answers
please check my answer thank you Write the phrase “the quotient of 3 more than a number, and 3 less than that same number. “ (x+3/(x3) . It is estimated that the Earth is losing 4000 species of plants and animals every year. If S represents the number of species living ... 
Physics
I have these two equations that I'm supposed to set equal to each other and find the answer for h which is height for this problem. But I don't think I'm solving it correctly. 0  (h/5) = 1.1(v0)  (1/2)(9.8)(1.1)^2 (v0)^2 = 2(9.8)(h/5  h) My final answer was h = 412.90 to... 
Calculus
I have two problems that I can't figure out for my test review... 1. Productivity: Because a new employee must learn an assigned task, production will increase with time. Suppose that for the average new employee, the rate of performance is given by dN/dt=1/2?(t+1) where N is ... 
Chem Check
Can someone verify my answers please? convert the folowing into a pressure reading expressed in torr A. 1.25atm * 760torr/1.0atm = 950. torr B. 2.48 x 10^3 atm * 760torr/1.0atm = 1.88 torr C. 4.75 x 10^4 atm* 760torr/1.0atm = 3.61 x 10^7 torr D. 7.60 x 10^6atm * 760torr/1.... 
math check my answer ?
What is the range of f(x)=−3x−1? the set of real numbers less than 0 the set of real numbers greater than 0 the set of real numbers greater than −1 the set of real numbers less than −1 <my choice 
Grammar
Can someone please help me check these for me.And help me correct them the correct way. I'LL APPRECIATED YOUR HELP :) I have to rewrite the sentences under the grammar rule of "Punctuating Sentences" if they need no change i have to write no change. (1) The goose bit the ... 
Gr.12 Chem  PLEASE CHECK MY ANSWER
Hi, Im learning about polymers. I did a lab to make slime where I mixed PVA glue & water. I then added borax to some water in another container, and the poured off the water from the wet borax. I then added the borax to the glue/water solution. I have to make a procedure that ... 
Check Business Law
(TCO 4) State court jurisdiction can be established in all of the following ways EXCEPT: a)when the defendant is a resident of the state, a summons may be served at that residence. b)cases involving more than $75,000 where the plaintiff and the defendant are citizens of ... 
Physics
The patient in the figure below is to receive an intravenous injection of medication. In order to work properly, the pressure of fluid containing the medication must be 108 kPa at the injection point. (a) If the fluid has a density of 1024 kg/m3, find the height at which the ... 
linear algebra check question
I just want to make sure my reasoning is correct. Let A be a 7X3 matrix whose rank is 3 a)are the rows of A linearly dependent or independent? I said dependent because a matrix whose rank is 3 means the row rank is 3, but if there are 7 rows then they have to be dependent on ... 
Chemistrycheck answer please
I am given a question where I have to state which combination of electrodes will result in the greatest voltage and which will result in the lowest voltage. The metals given are Zinc, Copper, Silver and Hydrogen I think that silver and copper would give the greatest voltage ... 
Physics
A sphere of radius R has inhomogeneous charge distribution on its surface. Its surface charge density is σ = σ0 cos θ, where σ0 is a positive constant, and θ is the angle from the “north pole” to the point of interest and satisfies 0 ≤ θ... 
Please HElp CHemistry MIDTERM
A 2.00 ml sample of an aqueous solution of hydrogen peroxide, H2O2 (aq) is treated with an excess of Kl (aq). The liberated I2 requires 12.40 mL of 0.1025 M Na2S2O3, for its titration. Is the H2O2 up to the full strength (3% H2O2 by mass) as an antiseptic solution? Assume the ... 
calculus II
(A) 2 students are sharing a loaf of bread. Student A eats half of the loaf, then student B eats half of what remains, then student A eats half of what remains, and so on. How much of the loaf will each student eat? (B) 2 students are sharing a loaf of bread. Student A eats 2/... 
World History Answer Check (Ms.
Why does Plato believe that philosophers would make the best rulers? What men would make poor ruler? A: Plato believe that philosophers would make the best rulers because, according to Plato, they have knowledge of truth that others do not and only they can make crucial ... 
Math
Look at the given triangles. Large triangle left side says 4x+2 top says 7x+7 bottom days 5x4. Small triangle left side says x+3 top says 2x5 and bottom says X+7. a. Write an expression in simplest form for the perimeter of each triangle. b. Write another expression in ... 
Math(Check Please)
1. Which line is the flattest (or is less steep)? Why? a. 
More Math To Check Please
4c^2  12c + 9 This is what I got: (2c+3)(2c3) *Is that correct.? No, it is (2c3)^2. 
word unscramble
xhfzhgzhoita Check the spelling. I found no matches. 
English
Could someone check my answers for this exercise. Dangling Modifiers 
computers
What is the main disadvantage of relying on spell check on your computer? 
algebra
what does it mean to solve and check for extraneous solutions for sqry+9=1 
algebra
I need help with: solving and check for extraneous solutions. sqrt y+9=1 
for bobpursley please check
ok So The American Association of Labor legislation did what then n 
algebra
When solving a rational equation, why is it necessary to perform a check? 
algebra
graph and check to solve the linear system. problem: 2x3y=3 x+6y=6 
english
i had a parargrahp writen i want you to check if its right orno t. 
prealgebra
can someone check if this inequality is solve right 5x + 3 >= 28 3 3 5x >= 25 5 5 x <= 5 
Math 116 algebra please check
Solve 0.8x < 56 The solution is x<70 
Math 116 algebra please check
Solve 8x  (5x + 7)= 17 The solution is x= 8 
Math 116 algebra please check
Solve 5/2x + 1/4x = 9/4 + x The solution is x 9/10 
math  scientific notation
please check. thanks. (8.3 x 10^15) (7.7 x 10^4) = 6.391 x 10^10 Is that right? 
science
i need help making a catapult. im gonna check my pc tomorrow 
Math check
Find the yintercepts for the function given by: f(x)= 4/(x+5)1/(x4)/2/(x3)+3/(x+2) I am stuck 
Math check
express in terms of i and simplify: srqt54 is it 3isqrt6? 
college
What is the ICD9CM code for a routine infant health check? 
math
Could someone please check these for me? 1. Find the function value if x=2 f(x)=x^3 F(2)=8 
7th grade
how do check to see if your caluator does order of opreations 
math
can someone check this please find indicated outputs for f(x)= 4x^2  2x f(0)=0 f(1)=6 f(2)=14 
science
what is radiation? What are some good sites that I could check out? Thank you!!:) 
To:Sabrina
Do you think you have time to check my french homework. thanks 
algebra
Find the slope, it it exists x+7y=14 x=7y/14=2 check this problem for me please 
math
8x 5y =20 5y 8x=20 x= 4 Solve the system of equations by graphing. Check this problem for me. 
algebra
Everytime I send a problem for someone to check no one does why!! 
social studies
article on "role of media to check corruption" 
Algebra
When solving a rational equation, why is it necessary to perform a check? 
Math
Can you please check to see if these are right? We have to set each of them to y. Thank You. xy=3: y=3x 2x+y=5: y=52x 2x+y=8: y=82x 
Math Check
Is this correct we have to set this problem equal to y? 2xy=4: y=4+2x 
ALGEBRA
When solving a rational equation, why is it necessary to perform a check? 
science
Dr bob, can you check my reply to chem question from andy thanx 
math
x+4/2x*6x^2/x^16= (x+4)/2x*6x(x)/(x+8)(X8) rational expression using factoring could some check this. 
Alg 2 Please can Someone Check this???
1) 8^2y = 52^4y+3 2) 2^3(2y) = 2^26(4y+3) 3) 6y = 104y+78 4) 98y = 78 5) y= 0.796 
algebra
12x^6+24x^518x^2/6x^2 3x^4+x^33x check see if I did it right. 
Math
Why is it necessary to perform a check when solving rational equations? 
Math(please check)
Simplify each expression: 1) (x+8)^2 = x^2 + 64 2) (x2)^3 = x^3  8 3) (x2y)(x+y) = x^2  xy 2y^2 4) (x+2)(x^2+3x2) = x^3 + 5x^2 + 4x4 Are my answers correct? 
Algebra, ( check please)
A/3+4=6 I subtracted 4 from 4, and 4 from 6. and I got A/3+2= But how do I solve it from here? 
Math
Check please Rewrite using distubutive property 3(x2) 8(z3) (t4)5 2(x7) 3x6 8z24 5t20 2x+14 
5 th math
what is 1/8= ? Equivalent fraction THIS IS WHAT I GOT ? = 2/16 ,4/32 AND 8/40. CAN YOU PLEASE! CHECK IT FOR ME MS. SUE THANKS!! 
Algebra
solve the eauation check for extraneous solutions. log5 x=4 
Math
Solve each equation by using the properties of equality. Check. 4x – 18 = 65 
Basic Algebra
solve the equation & check your solution: 2/5x9/25x=5 
Basic Algebra
solve the equation m, and check the solution: 5/6x1/5x+4=7/10x 
Algebra
Solve the equation 5x+7=137x graphically. then check your solution algebraically. 
Algebra
Solve algebraically and check your potential solutions: sqrt((x+2) x =0 
help in math
solve and check each of the following quadratic equation (1) x^2=6x (2) x^2=3x (3)x^2=17x (4) x^2=5x+6 (5) x^2+9x=10 
Lif oritation
Wht are the check and balance that control the media? 
Math
Solve & check your solution ( if checking isn't possible, explain why ) 5x/4 + 1/2 = x  1/2 
Ms. Sue Help me with my poem
Please look at my last post, so you can check my answers. 
Algebra2
Check? Give the slope and yintercept of the given line. 1. 2x3y=6 = 3y = 2x6 y = 2/3 x  2 2. y=2x = 2/1x + 1 3. y=3 = y=3/1x + 3 3y = 2x6 y = 2/3 x  2 
Algebra2
Check? Give the slope and yintercept of the given line. 1. 2x3y=6 = 3y = 2x6 y = 2/3 x  2 2. y=2x = 2/1x + 1 3. y=3 = y=3/1x + 3 3y = 2x6 y = 2/3 x  2 
Grammar
He came in for his preoperative _____. A) check up B) checkup I answered B 
math
solve 9x<27 I did 9x/9<27/9 x<3 Just a double check. I believe this is right Thanks