Calculus (Answer Check)
88,467 results, page 64

Chemistry(Please check)
1)A piece of metal with a mass of 5.50 grams changed in temperature from 25 to 55 degrees celsius when 21.3 joules was absorbed. What is the specific heat of the metal? a)0.256 b)0.129 c)3.91 d) 7.75 e)0.710 Jg^1 C^1 I chose 7.75 because I did 5.50/21.3 and then multiplied ... 
Physics  Charges on objects (check + help)
Two identical objects have charges from +6.0*10^6 and 2.0*10^6, respectively. When placed a distance d apart, their force of attraction is 2,0N. If the objects are touched together, then they moved to a distance of separation of 2d, what will be the new force between them? ... 
Early Child Ed.
Would someone also please check thse questions and my answers to make sure I have chosen the best possible answer? 1. A good example of peoplefirst language is: A. "He has cerebral palsy." B. "She's a Down's baby." C. "This is a child with attention deficit disorder." D. "... 
English
The new drug proved to be highly efective,it has no side effects. A. PROPERLY CONSTRUCTED SENTENCE B. COMMA SPLICE C. LACKS PARALLEL PARTS D. HAS UNCLEAR PRONOUN Please post your answer, and we'll discuss it. A Please check this site. http://ace.acadiau.ca/english/grammar/... 
Physics
I need help on the following questions, I am stuck and not sure on what to do, can someone work it out and or tell me steps to obtain the answer. Thank you 1) A point charge of 0.90 microC is fixed to one corner of a square. An identical charge is fixed to the diagonally ... 
Calculus
Can anyone help me with these two optimization problems? A boat leaves a dock at 9:00 P.M. and travels due south at a speed of 20 km/h. Another boat has been heading due east at 15 km/h and reaches the same dock at 10:00 P.M. How many minutes after 9:00 P.M. were the two boats... 
Chemistry
You work at a fastr food restaurant 5 days a week, 6 hours a day, and are paid $840 every two weeks. Each hour you wrap 184 burgers. How many burgers will you have to wrap to make a million dollars? I got $7142857 from the proportion: $1,000,000x 2 weeks/$840 x 5 days/1 week x... 
math check please
Newton’s law of cooling states that for a cooling substance with initial temperature T0 T 0 , the temperature T(t) T ( t ) after t minutes can be modeled by the equation T(t)=Ts+(T0−Ts)e−kt T ( t ) = T s + ( T 0 − T s ) e − k t , where Ts T s is the surrounding ... 
Calculus
ABC Daycare wants to build a fence to enclose a rectangular playground. The area of the playground is 900 square feet. The fence along three of the sides costs $5 per foot and the fence along the fourth side, which will be made of brick, costs $10 per foot. Find the length of ... 
calculus
A box with a square base is to be constructed with a surface area of 726 square centimeters. 1. Draw a diagram of the box. Label the diagram appropriately with variables. 2. Write an objective equation and a constraint equation (label each one as objective or constraint). 3. ... 
Math
Can someone check my answer for this homework assignment? What is the volume of a square pyramid that is built in a cube with edges of 12 inches? Square pyramid in 12inch cube A. 48 in3 B. 144 in3*** C. 576 in3 D. 1,728 in3 Find the volume of a square pyramid with base edges ... 
Check Answers PLEASE
Paula asked 30 students what they ate for lunch. All the students had at least a sandwich, salad or fruit. ********************************* QUESTION A Draw a Venn Diagram. * * * * * * * * * * * * * * * * * THIS IS THE INFORMATION FROM THE DIAGRAM: 5 students had a sandwich, ... 
math***check answerss****
please check answers... 2.yesterday ,a parking lot had 10 cars parked in it.of the cars parked in the parking lot l,40% were silver,3 were red,and the rest were blue.how many of the cars were blue? A.2 cars B. 5 cars C. 3 cars (I PICK THIS) D. 8 cars 3.everyone in andy's class... 
Chemistry
Hi! I am having some trouble with this question, can you please help me? Which of the following describe chemical properties? Check all that apply.  Iodine (a purple solid) becomes a purple gas.  Titanium is less dense that iron .  Water freezes at 0'C  Sugar burns in air ... 
Algebra
Could someone correct my answers and help with the other problems? 1. Are the following lines parallel, perpendicular, or neither? L1 with equation x – 5y = 10, L2 with equation 5x + y = 5. Answer: Neither (I'm not to sure but i think this is the right answer) 2. Divide: a^... 
Propagating error
Find the absolute and percent relative error for each calc. b) 81.5 (+/ 0.5) x 40.2 (+/ 0.2)/ 21.8 (+/ 0.2) my answer for absolute error was 150. +/ 200, which is outrageous. Can someone show how they would do it so I can compare and find my mistake? error/(81.5* 40.2/ 21.... 
Algebra
Can you please check my answer: Solve the problem. A person with no more than $4000 to invest plans to place the money in two investments, telecommunications and pharmaceuticals. The telecommunications investment is to be no more than 3 times the pharmaceuticals investment. ... 
Someone Please Check My Answers?!?!?
18. Which action during westward expansion had the most negative impact on the lives of slaves? A.) The Fugitive Slave Act**** B.) The MexicanAmerican War C.) The Treaty of Washinton D.) The Missouri Compromise 19. Which answer best describes why towns and cities were built ... 
math please help
please check my answer thanks :) I messed up somewhere.:( Using the FIFO method of inventory pricing, what is the dollaor value of ending inventory if there were 17,000 units on hand on Dec 31 Must show all of work Jan 1 5,ooo @ $0.89 = 4450 Feb 15 10,000 @$ 0.69 = 6900 Apr 15... 
Calculus
I did an experiment where I had to measure how fast water flowed out of a container at different times and with different volumes. I also had to record the values into a table and graph them. (I got an exponential function). I am to answer the following questions and I do not ... 
Science, please check my answer Ms Sue!
How does a hurricane form? a.)It forms over a warm ocean water as a lowpressure area*** b.) it forms over a warm ocean as a highpressure area. c.) it forms over cool ocean water as a lowpressure area d.) it forms over a cool ocean water as a highpressure area. My answer is... 
Business Accounting
why does the bank tell you they are "crediting" your account when they increase it and "debiting" your account when they decrease it? I know this is a simple question but I just want to make sure I am currect with my answer before I post it to my class forme. Answer: A bank ... 
Algebra
1. Given g(x) = x^2 x, find g (2/3). Answer 2/9 2. The scatterplot of this data would suggest a Study Time (Min) 14 20 23 25 28 32 Test Score 60 67 68 70 72 73 Answer positive correlation 3. The scatterplot of this data would suggest a # of cookies consumed each week 1 3 4... 
Pre Calculus 12
Im on the chapter of permutations/combinations/fundamental counting principle need help with 2 questions 1. emma is arranging her books in piles on her desk. she has 5 math books, 3 english books, and 4 science books. how many ways can she arrange them if she wants to keep the... 
math,correction
is this correct: solve: 5(x2)^2=3 My answer: (10 +/ sqrt 15)/(5) looks like you expanded, then used the formula and you got the right answer properly reduced. I think you are getting this!!! I don't want to confuse you but I would have done the following: (x2)^2 = 3/5 x2... 
Mathprobability
In a multiplechoice test, each question has five options. Students will get 5 points for each correct answer; lose 2 point for each incorrect answer; and receive no points for unanswered questions. A student does not know the correct answer for one question. Is it to her ... 
physics
A newly established colony on the Moon launches a capsule vertically with an initial speed of 1.453 km/s. Ignoring the rotation of the Moon, what is the maximum height reached by the capsule? km The answer key is 1040km. I have tried v^2/2g (1.4532km/s)^2/(2*.0162km/s^2) and ... 
algebra
x^2x35 x(2x35) x(x35) check this for me thank for your help. 
algebra
3/2y3/2y+4= 3(y)2(y+4)= 3y2y+8= y=1/8 check this 
algebra
a+4/2=a+4/a= a^+4a+ a+4a a^=44 a^=8 Check this for me 
algebra
y/4+2y=2y^2/4 check this 
algebra
2y+1/y^2Y6= 2y+1/(y+2)(y3) check this 
algebra
What is the check of 40/5=8 
math check me
(3)/(5)y=15 Does y=25 
math check
2k=14.6 K=29.2 
math *check*
x:1,2,3,4,5,6,7,8,9  y:0.8,2.1,3.1,3.8,5.2,8.4,6.9,8.1,9 
Math
Check for 2/3(k+8)=52 
Check answers?
1. (3x + 4)(x – 2) A)3x^2 – 2x – 8 B)x – 8 C)3x – 2x – 8 *** D)3x^2 + 2x + 8 
help
do you check papers 
math (Damon) check step by step for me
A mixture of pure k2cr207 and pure kmno4 weighing 0.561g was treated with excess of ki. In acidic medium. Iodine liberated required 100ml of 0.15M of sodium thiosulphate solution for exact oxidation. The right answer 43.67 k2cr207 and 56.33 kmn04 K2cr207 = 294 (X) kmno4 = 158... 
Intermediate Algebra
Please help with the below. I know the answer I need help figuring out how to get the answer I am obviously doing something wrong, because I come up with a different answer that what I am supposed to. Here it is: F(X)3Xsquared5X+1 The correct answer is 12Xsquared70X+101, the... 
PreCalculus
The Hotel Ventor has 400 rooms. Currently the hotel is filled. The daily rental is $ 600 per room. For every $6 increase in rent the demand for rooms decreases by 7 rooms. Let x = the number of $ 6 increases that can be made. What should x be so as to maximize the revenue of ... 
Chemistry(Please check)
1) Which statement below is correct (true)? a) Since HNO2 is a stronger acid than HF it must have a greater pKa. b) Since HOCℓ is a stronger acid than HCN, then OCℓ– is a stronger base than CN–. c) The dissociation (or ionization) of HOCℓ in water is HOC... 
grammar
Grammar Exercise 3 To Be Distributed to Students in Week Five 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 typing. If the sentence is already correct, write No Change. ... 
science check
An elastic object strikes to ground and compress when it touches the ground. What is energy transformation? a gravitational to electric b electric to gravitational c A Answer i don't know which one is right for the second one. A study shows treatment of peptic ulcer with... 
Calculus
A train is heading due west from St. Louis. At noon, a plane flying horizontally due north at a fixed altitude of 4 miles passes directly over the train. When the train has traveled another mile, it is going 80 mph, and the plane has traveled another 5 miles and is going 500 ... 
essay check please
This is the introduction of my essay , please check it !!!!!!!!!!!! It would really help “All men are born equally free”Salmon P. Chase. A very important character that shapes our society is equality, but many people don’t believe in it. Racism and discrimination are ... 
Chemistry
Can someone please check my answers for me for the following questions. THANK YOU! 1) An ion with an oxidation number of 3+ can combine with three other ions, if each of these ions has an oxidation number of....3 2) The correct formula for nickel(II) chloride is...NiCl2 3) A ... 
computers please check my answer
List five important points to remember when you're planning a PowerPoint presentation? This what I got say what you need to say in as few lines as possible. I think it's generally recommended no more than 7 lines per slide. Also, make the presentation as short as possible ... 
WorldHistory
Check? What are the three ways that civilization in western Europe declined after the Roman Empire fell? Answer: 1. All government stopped and didn't exist after the fall of Rome. The society fell apart . 2. Because of no government there was no army for protection and there ... 
Maths
Dear Genius, Good day! The number of apples in a basket is between 60 and 120. If i put these apples into bags of 5, there will be a remainder of 1 apple. If i put these apples into bags of 8, there will be a remainder of 6 apples. Find the total number of apples in the basket... 
math
*This is orders of magnitude* 1)So, I have to estimate 16,700,000,000,000,000 the product of a single digit of 10.  2 x 10^16  2 x 10^15 *my answer*  1 x 10^16  1 x 10^15 2)0.00000394 estimated as the product of a single digit. ____ x 10____ *fill in the blanks* *my answer... 
Math  Problem solving
I used the guess and check method for solving this problem but would like to know how to set up the equation. A camp counselor buys granola bars and juice drinks for the campers. She decides to buy 3 times as many drinks as granola bars. Predict how many of each she can buy on... 
Math
*Ms. Sue or Reed, please check my other question as well if you have time, thank you :) 1. Which sentence has proper subjectverb agreement? A) Even my cousin Steve feel sad today. B) Even my cousin Steve look sad today. C) Even my cousin Steve feels sad today. D) Even my ... 
5th grade LA
Can you check this sentence. Each pair has a problem with a change in verb tense. Rewrite the sentences so that verbs are correct. 1. Honey never spoils. Honey from tombs of ancient Egypt still tasted good today. answer: Honey never spoils. Honey from tombs of ancient Egypt ... 
English
Question 12 He wrote a hot check. The word hot is used poorly clearly connotatively denotatively Question 13 Hot flames poured out of the grill. The word hot is used poorly clearly connotatively denotatively my answer 12. poorly because its slang for bad 13connotatively 
chemestry please check my anwer.
1.How do acidbase reactions differ from oxidationreduction (or "redox") reactions? Answer Acidbase reactions involve an exchange of protons whereas redox reactions involve an exchange of electrons.<<< Acidbase reactions and redox reactions involve different ... 
Math
Hello! Can you check my answers for these questions? Thank you in advance (= 1. The following ordered pairs give the scores on two consecutive 15point quizzes for a class of 18 students. (7, 13), (9, 7), (14, 14), (15, 15), (10, 15), (9, 7), (14, 11), (14, 15), (8, 10), (9, ... 
Physics
A superhero flies 235 m from the top of a tall building at an angle of 25 below the horizontal. What is the horizontal component of the superhero’s displacement? Draw the vectors to scale on a graph to determine the answer. Answer in units of m Your answer must be within... 
probability
Paul is vacationing in Monte Carlo. On any given night, he takes X dollars to the casino and returns with Y dollars. The random variable X has the PDF shown in the figure. Conditional on X=x, the continuous random variable Y is uniformly distributed between zero and 2x. ... 
English
I urgently need you to check these sentences. Thank you. 1) As our students we'll probably have to learn science in English in their last year of high school, we would rather they used English as the lingua franca for their Comenius project. 2) I think either your school or ... 
Science Check Please
Which of these is true? The nervous system doesn't react as quickly as the endocrine system. The endocrine system doesn't react as quickly as the nervous system. (My Answer) The nervous system and the endocrine system have similar reaction times. The endocrine system and the ... 
Technology
1. Which of the following is NOT an example of a objective question? A. multiple choice B. essay** C. true/false D. matching 2. Why is it important to recognize the key word in an essay question? A. It will provide the answer in an essay B. It will show you a friend’s answer... 
calculus
Sorry to post this again, but I am still unable to understand it and need help. Please help.1) Using 3(x3)(x^26x+23)^2 as the answer to differentiating f(x)=(x^26x+23)^3/2, which I have been able to do, I need to find the general solution of the differential equation dy/dx... 
English  Check these?
Can someone help me check these? 1. The main purpose of a research paper is ____________. (1 point) to verify information to expand a body of knowledge*** to persuade the reader to commit to a course of action 2. Which of the following is NOT a guideline for choosing a topic ... 
English
Can you please check the following sentences? I just want to make sure that the tense choice is correct. 1.Enter the airport and look at the departures board to check your flight number and the departure time of your flight. 2.Go to the checkin desk to weigh your luggage. ... 
Potential Energy Q
Q A rollercoaster of mass 400 kg is stationary at the highest point on the track. It then drops to the lowest point through a vertical distance of 24 m. Calculate: a) the potential energy of the car at the top of the ride. b) the speed of the car at its lowest point, ignoring ... 
History of old Europe
The Middle Ages began with the collapse of... A. Renaissance. B. Roman Empire. C. Kingdom of Mali. D. Tang dynasty. My answer A Why did the system of feudalism arise drink ht eMiddle Ages? A. to develop an economic system b. to determine jobs within city C. to defend the ... 
math  marginal analyis
A factory's output is Q=600K^1/2L^1/3 units, (read 600 x K to the 1/2 power x L to the 1/3 power). K denotes capital investment and L denotes the size of the labor force. Estimate the percentage increase in output that will result in a 2% increase in the size of the labor ... 
Honors PreCalculus
It is known that when a car with wheels of radius 14 in. is driven at 35 mph, the wheels turn at an approximate rate of 420 revoulutions for minute. Show how to obtain this rate of turn. If you ride a bicycle a distance of 5 miles in 15 minutes at a constant speed and if the ... 
computer science
I need to write a program that ask the student to enter an answer to a math problem. The user should enter two values, one at a time, and then ask for an answer. The program should display if the entered answer is correct or not and display the correct answer if the user ... 
Math
Ok I'm on castle learning and for homework this weekend we have to do #14 (assignments) that is due on Saturday @ midnight because that the time it will close and I need help on this question. My assignment is: Math 7 (Q1) Assign #2  Fractions (i already did the others) Qs. ... 
chemistry Damon check my calculation
25g of a sample of ferrous sulphate was dissolved in water containing dilute h2s04 and the volume made up to one litre. 25ml of this solution required 20ml of this solution required 20ml of n/10 kmn04 solution for complete oxidation. Calculate the percentage of f2s047h20 in ... 
Calculus
Ian's house is located 20km north of Aida's house. At 9am, one saturday, Ian leaves his house and jogs south at 8km/hour. At the same time Aida leaves her house and jogs east at 6km/h. When are Ian and Aida closest together given that they both run for 2.5 hours? The answer is... 
chemistry
thanks DrB I got AgCl also Could you check this problem as well? If you start with .500 moles of NaF, how many moles of CaF will form? I got .250 that is correct as far as i know i got the same thing That's correct. Your answer is right. I can only assume you worked it right. ... 
Physics  Half Life Question Check!!!
An ancient rock is found to contain 40Ar gas, indicating that 77% of the 40K in the rock has decayed since the rock solidified. Any argon would have boiled out of liquid rock. How long ago did the rock solidify? The halflife of 40K is 1.25 billion years. A) 2.6 billion years ... 
chemistry(check my answer)
Which of the following will be affected by the addition of a catalyst to a chemical reaction? a)the value of the reverse rate constant, kr b)the magnitude of the equilibrium constant c)the value of the forward rate d)ΔHo e)the value of the forward rate constant, kf f)&#... 
Grammar
Which of the following sentences displays a correct use of punctuation? A.The Dutch master, Rembrandt, is famous for his selfportraits. B.The Dutch master Rembrandt is famous for his selfportraits. C.The Dutch master Rembrandt, is famous for his selfportraits Pretty sure ... 
Physics SHM
An automobile can be considered to be mounted on four identical springs as far as vertical oscillations are concerned. The springs of a certain car are adjusted so that the oscillations have a frequency of 4 Hz. (a) What is the spring constant of each spring if the mass of the... 
Dogs Hunting Training
Please check my answer thanks :) Which sporting breed was not developed in North America Chesapeake Bay Retriever Nova Scotia Duck Tolling Retriever Golden Retriever Ok I am not to sure about this one becase I have been told that the Yarmouth County, Nova Scotia, Canada, is ... 
chem
which of the following is a chemical reaction? A) propane forms a flame and emits heat as it burns. B) Acetone feels cold as it evaporates from the skin. C) Bubbling is observed when potassium carbonate and hydrochloric acid solutions are mixed. D) Heat is felt when a warm ... 
teaching in early chldhood programs
A teacher is concerned about monitoring the progress of individual children in the secondgrade classroom. What would be the best advice to give the teacher? A. Give a test periodically to see if the children have achieved according to the standards set. B. Use centers only ... 
teaching in early childhood programs
A teacher is concerned about monitoring the progress of individual children in the secondgrade classroom. What would be the best advice to give the teacher? A. Give a test periodically to see if the children have achieved according to the standards set. B. Use centers only ... 
college algebra
A store sells cashews for $5.00 per pound and peanuts for $1.50 per pound. The manager decides to mix 30 pounds of peanuts with some cashews and sell the mixture for $3.00 per pound. How many pounds of cashews should be mixed with the peanuts so that the mixture will produce ... 
Spanish Check
Hi! Can someone check these for me? Thanks! Directions: Label each sentence with the correct tense they are in. They translate it into full Spanish. 1.) I will study. (Future) (Translation: Estudiare) 2.) Mom made tacos. (Present) (Translation: Mama hizo tacos) 3.) I’m happy... 
Math \ Algebra
Hello! Can you check my answers for these questions? Thank you in advance (= 1. The following ordered pairs give the scores on two consecutive 15point quizzes for a class of 18 students. (7, 13), (9, 7), (14, 14), (15, 15), (10, 15), (9, 7), (14, 11), (14, 15), (8, 10), (9, ... 
Math
Hello! Can you check my answers for these 4 worksheet questions? Thank you in advance (: 1. The following ordered pairs give the scores on two consecutive 15point quizzes for a class of 18 students. (7, 13), (9, 7), (14, 14), (15, 15), (10, 15), (9, 7), (14, 11), (14, 15), (8... 
LeadershipCheck #2
Please check: 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. Seeking for improvement helps make the idea grow better and better. A leader must be able to lead in... 
spanish help please
A nosotros se ____perdieron las llaves del auto. answer nos Se me _____ (forgot) hacer la tarea anoche. answer olvida A Rita y a Pedro se _____dano la motocicleta answer les 
Algebra
3.29x=5.5√(x)+10,000 How in the world do I solve for x without using a calculator? I swear I've been on this for hours. I know the answer is 3133 because I estimated the answer and then began plugging in numbers until I got to the actual answer. 
English
Which of the following is a good testtaking strategy for multiplechoice questions? 1.Answer C is almost always the correct answer, so pick C if you don’t know the answer. 2.Read the answers first, and then read the question. 3.When in doubt, provide two answers. 4.After ... 
Math 6th Grade
Can someone please help I been trying to figure this out for a long time and you guys help me? 2. Which of the following is a true statement? (1 point) A.) –2 < 1 *** My answer B.) 1 < 0 C.) –1 < –2 D.) 1 > –2*** My answer (but there is one ... 
language arts(CHECK ANSWERS)
PLEASE CHECK MY ANSWERS /.,. 1.select the dependen clause that best completes the sentence below. jeff and his parents went to a nice Italian restaurant________. A.located down town near the river.(I PICK THIS) B.even though his mother prefers Chinese food. C.after his piano ... 
English
Can you please tell me if the following expressions are possible? 1) Would it be all right with you if I got my book from the other room? I left it in my backpack. 2) Can you wipe the blackboard off? 3) You should return the book to the library in two week's time. 4) Can you ... 
political science
1) Scenario: The President appoints Dan Evans to Senator Adams' seat when Adams resigns due to a personal scandal. This scenario is: a) Constitutional, because it is within the President’s powers to appoint Senators when one dies or resigns in the middle of his/her term. b) ... 
Calculus
using the following information in place of that in the book. The machine earns the company revenue at a continuous rate of 50000 t + 35000 dollars per year during the first six months of operation, and at the continuous rate of $60000 per year after the first six months. The ... 
Calculus
Sorry for posting another quesiton..; f(x) = { 7x^2 + 7x for x<=0 { 3x^2 + 7x for x>0 According to the definition of derivative, to compute f'(0), we need to compute the lefthand limit lim x> 0− = _____ and the righthand limit lim x>0+ ______ We conclude... 
Poem: A Voice by Pat Mora
Could you please check my answers thanks 1.What happens when the mother goes to the state capitol to give her speech? Answer: When the mother goes to the state capitol to address her speech she wanted to hide her face. Also she faked hoarseness, and she felt her breath was ... 
Grammaragain
Determine if the following sentences are: a. runon b. fragment c. correct as is. 1. An appendectomy yesterday. Answer: b. fragment 2. When she felt better, the patient ate. Answer: c. correct as is 3. Her pain was evident on palpation the medication did not help even though ... 
Chem
Could you check my answers and if wrong, suggest the right one. 1. In gas chromatography, two measurements are made. Identify the qualitative and quantitaive measurements. dye color and retention time 2. Why are components such as polymers like starch and cellulose unsuited to...