Wednesday
February 22, 2017

Search: Calculus - not sure if my work is correct?

Number of results: 70,964

see if this is correct
If the area is x2 + 5x + 6m2 and we know the area is a square which is base times height, we can factor the equation so that it comes out to (x+3)(x+2) since the height is x+3 then we know the base has to be x+2
February 23, 2009 by mason

french- passé composé
C'_______ (etre)terrible! (Fill in using the passé composé) Would the correct answer be "C'est été terrible"?
March 12, 2009 by Anonymous

french
is it correct to say "je vais mettre les affiches" or should it be "je vais monter les affiches" (as in "I'm going to put the posters up")? Merci
March 23, 2009 by kl

French
Place the following in the passé composé: Elle se lève de bonne heure. Would this be correct? Elle s'est lèvée de bonne heure.
March 25, 2009 by Anonymous

French1
Complete with the correct form of the partitive. -Benoit va au marche. Il achete _____ fromage. would it be du? -Il achete _____ poires. would it be des?
May 8, 2009 by sophie

geology(science) am i correct
What are the two categories of metamorphic rocks? What are the distinguishing characteristics between the two categories of rocks? the answer? Is that foilated and nonfoilated?
June 12, 2009 by scooby91320002

Math
Are these correct? two more than a number and four = 2 + n + 4 ten more than a number plus 3 = n + 10 + 3 three increased by a number minus 5 = n + 3 - 5 six and a number decreased by 7 = n+6-7
November 8, 2009 by JADEN

Earth Science
which geologic era had the shorest time span and the longest time span? 1) Longest = paleozoic 20 shortest = cenozoic Is this correct?
March 26, 2010 by Abbey

English
1. He was based on mountains and rivers, so he painted a lot of beautiful pictures. 2. He was based on the scenery, so he could paint many pictures containing mountains. (Are they correct sentences?)
August 31, 2010 by rfvv

3rd gr math
tyrell says $750 is about $800. Sara says $750 is about $700. Who is correct? Explain? Its number sense.
September 27, 2010 by nancy

science
A mineral can scratch any mineral harder than itself. True or False? I said it is false. My Mom told me I am wrong, it is true!! Can you tell me who is correct?
November 21, 2010 by Reed

3rd math
The commutative, or order, property applies to which operations? A. Add & Multiply B. Subtract & Mutiply C. Add & Subtract D. Mutiply (we chose A - is this correct?)
January 10, 2011 by Anonymous

psychology of personality
The way you see and define your self is known as your a) self-esteem b)self concept c)social identity d)self-esteem variability is a correct answer? thank you
July 20, 2011 by vedrana

english
Fill in the blank with correct option 1.Watch-----the milk;don't let it boil ---. a.No preposition required,down b.No preposition require,over c.over,up d.over,over
August 22, 2011 by swarna

Pre-Calc-Please check
Is this correct? Using Rational Roots Theorem, list all possible rational root of f(x) = 2x^3 - 3x^2 + 5x+6 Possible roots are p/a = -+1, -+2, +-3, -+6. -+3/2
January 10, 2012 by Julia

algebra
tow company A charges $50 + m and company C charges 80 + .1m. If both companies charged the same, how far are you from your garage? Are they asking for 2 different #? If so,I am 30 miles from A and 0 miles from C. Correct?
January 18, 2012 by John

math
find the area of a triangle with the base 1 1/4 and height 4/9 ( Hint the area of a traingle is equals half the product of its base and height ) I came up with .55 or 11/20 is this correct ???
May 21, 2012 by mike

7th grade math check my answers please quick
11. 17, 200 written in scientific notation is 1.7 x 10^5 21. 0.00105 written in scientific notation is 1.05 x 10^-3 are these correct?
September 28, 2012 by Delilah

Absolute Extrema
Find the minimum and maximum values of the function f(x)= 2/3 sin pix on the interval [1,2] (domain). I got (1.5, -2/3) as the minimum and no maximum on the interval. Is it correct? Thank you.
March 9, 2013 by Mary

Who is correct?
Sarah says that overhead includes utility, rent, and salary costs. Jonas says that overhead includes liabilities and accounts payable.
March 15, 2013 by Maria

language
Is this the correct past-tense helping verb and main verb for the rewrite of this sentence ? The leaves were shook from the branches . The leaves was shaken from the branches .
December 6, 2013 by Gabe

math
the triangle CDE, m<D=90 degrees, m<C=50 degrees, and ED=23. Which equation could be used to find CE? 1. sin50=CE/23 2. sin50=23/CE 3. cos50=23/CE 4. tan50=23/CE I say the answer is 2 because of the equation s=o/h Is this correct?
March 3, 2014 by B8

Math
What are the characteristics of a right angle? This is my answer: It is 90 degrees, it is also perpendicular line, it is also half a straight line of 180 degrees. Is this correct?
January 6, 2015 by Amy

Math
There are 24 marbles in a jar. Nine of the marbles are yellow and the remainder are blue. What is the probability of picking one blue marble from the jar? Is the correct response 5/8?
August 13, 2015 by kareen

English
1. She pulled him gently towards her. 2. She pulled him gently towards herself. ------------------------ Can we use both expressions? In Sentence 2, a reflexive pronoun is used. Is #2 correct?
July 14, 2016 by rfvv

Math
Each homeroom of a middle school receives 1/12- acre plot of 5/6 acre of land. How many classrooms receive a plot of land. 5/6 divided by 4840 is this correct
September 26, 2016 by Noel

MATH
Allyne said that she had 8/5 of pizza left from the party. Billy said that she had 1.3 pizzas left. Explain if Billys answer is correct or not.
October 16, 2016 by SHARON

Math correct me
5.The sales tax rate 6.3%. a. find the tax paid for a pair of earrings with a list price of $77 b. what is the total cost of the pair of earrings? $4.85;$77.79 $4.85;$81.85 ••• $0.49;$77.49 $0.49;$81.85
December 13, 2016 by Lily

Chemistry
If I add water to NaNO3 does it make HNO3 and NaOH? For example NaNO3 + H2O -> HNO3 + NaOH is that equation correct? Please explain if it's not. Thanks!
January 2, 2017 by Sherlique

Physics
Hi, I had some questions about Physics and Newton’s Three Laws of Motion and was wondering if someone could possibly help me. Some of the questions I wasn’t sure about the answers. #1 Write out in words what “acceleration ~ net force” means. My Answer: I think it means...
November 7, 2009 by Hannah

Geometry
The foundation for a cylindrical water tank is a cylinder 27 ft in diameter and 3 ft high. How many cubic ft of concrete are needed to build the foundation? for this problem I came up with 1716.8. 3.14*13.5*13.5*3= 1716.795 or 1716.8 Can someone let me know if this answer is ...
November 22, 2009 by aleah

Chemistry
42. List 2 things a chemical formula indicates about a compound: -It indicates the elements present in the compound. -The relative amount of each compound. Are those correct? 44. What element do most of the polyatomic ions contain? Thanks -MC
October 25, 2010 by mysterychicken

English
1.Everyone in the club (has, have) read this book. 2.Most of the field (needs, need) mowing. Tell if the indefinite pronoun is singular or plural. Then choose correct word in () 1.singular=has 2.singular=needs
December 8, 2010 by Chris

Linear Algebra
(1) Define T:R->R be a linear transformation such that T(x,y,z)= (2x,2y,2z) then the given value of T is A. 3 B. 2 C. 4 D. 6 (A) (B) (C) (D) (2) Let V and W be vector spaces over a field F, and let T:V-> W be a linear transformation then only one of the following ...
December 26, 2010 by Sower

Physics Check
How much does it cost to operate a 1.0-W electric clock for a year if electricity cost $0.05/k Wh? I think the answer is =$0.44 a year with the calculations of 1.01*24hrs*365=8,760Whr/1000kw = 8.76kWh 8.76 kWh * 0.05 = 0.44 a year. Is this correct?
January 29, 2011 by Anonymous

geography
Name three major mountain ranges and state to what continents they belong? My answer is--- Rocky Mountains,North America Andes Mountains,South America and Sentinel Mountains, Antarctica is this correct?
March 21, 2011 by Reed

Business Communication
Attention, Interest, Desire and Action (AIDA) is used for structuring: a. effective, persuasive communication b. incomplete communication c. the "you attitude". d. avoidance of a "call for action" Is A correct any other opinion please
October 16, 2011 by lisa

history
After Hitler came to power in 1933, he blamed Germany's defeat in World War I on A. Communists and Socialists. B. Jews and Gypsies. C. Communists and American imperialists. [D. Jews and Communists.] is my answer correct
December 12, 2011 by jake

Statistics
If red has a probability of occurrence of .70 and black has a probability of occurrence of .30 and they are the only choices what is the probability that you pick the right color 10 out of 10 times and what is the standard deviation. I keep getting (.70*.50) + (.30*.50) = .50...
February 11, 2012 by Joe D.

math
hermione puts $1000 into an account on january 1, 2008. if the account is compounded continuously at a rate of 7.9%, in what month of what year will the account reach $100,000? Is the correct answer January,2069?
April 23, 2013 by Beth

math
Eric has a two rocks samples. One has a mass of 600 grams and the other has a mass of 1 kilogram. He recorded the total mass as 7 kilogrmaas. Explain what he did wrong? What should be the correct answer in grams?
March 25, 2014 by Math

statistics
A test consists of 12 multiple choice questions with 5 choices for each question. As an experiment, you GUESS on each and every answer without even reading the questions. Probability of getting less than 4 questions correct on this test is:
May 20, 2014 by Ned

Algebra/can you help me
Write each expression in terms of common logarithms, and then give a calculator approximation (correct to four decimal places). log7^10= 1.183 How do you find the approximation log3^316 = 5.239 How do you find the approximation Thank you
June 2, 2014 by Mary Ann

Math
Estimate the answer to the following problem by rounding to the nearest 10: 13 + 46 + 87 = ? A: 130 B: 155 C: 160 D: 150 I personally think its 160, because look; 13 + 46 + 87 = 146. I rounded it, and I think it's 160. Could anybody find out if it's correct or not? Thank you.
November 14, 2014 by Lexi

math physics
What frequency is heard by an observer who hears the 450 Hz siren on a police car traveling at 35 m/s away from her? Assume that the velocity of sound in air is 345 m/s. Is this the correct? 450*345/(345+35) =408Hz
November 24, 2014 by Ben

Chemistry Physics
What frequency is heard by an observer who hears the 450 Hz siren on a police car traveling at 35 m/s away from her? Assume that the velocity of sound in air is 345 m/s. Is this the correct? 450*345/(345+35) =408Hz
November 24, 2014 by Ben

ENGLISH - GRAMMAR ????
Do you know how cheese is made? - active voice. A new airport will soon be built near the city. - passive voice. Absolute silence should be maintained. - passive voice.. Are the above are correct?
January 14, 2015 by Niya -

Math
THE POINT (8,-3)LIES ON THE CURVE Y=3/(7-X) (a)IF Q IS THE POINT (x,3/(7-X)) USE YOUR CALCULATOR TO FIND THE SLOPE OF THE SECANT LINE PQ CORRECT TO SIX DECIMAL PLACES FOR THE VALUE OF X. (i)7.9 Mpq? (ii)7.99 mPQ? (iii)7.999Mpq? (iV)7.9999 MPQ?
January 23, 2015 by Tee

Social Studies
Republicans in Congress easily overrode Johnson's vetoes and took charge of Reconstruction during? 1: Radical Reconstruction 2: Restoration 3: Congressional Reconstruction 4: Radical Rebuilding I believe the answer is #1...Is this correct?
April 29, 2015 by Marylyn

Math
The COE price for a small car in January was $16,525. In November, the COE price had increased to $24,725. Find the percentage increase in the COE. Express your answer correct to 1 decimal place.
October 4, 2016 by Sheen

Anatomy and Physiology
when the aortic valve opens into the aorta blood flows A. out of the body B. into the right atrium *** C. into the left ventricle D. out of the pulmonary artery my answer : C Am i correct?
January 23, 2017 by Lolaw

Psychology
The part of a person's self-conceop that is based on identification with a nation, culture, group or gender is called: A. Social identity B. Social stereotype C. Tacit identity D. Social concept I chose d is this correct
February 3, 2017 by Brenda

Communication
Is this statement correct? She is a very capable black woman? Remove the word "black" and it's fine. Or simply say, "She's very capable." The simpler, the better. =)
April 20, 2007 by Simone Blake

Writing...Grammar
Hello, The following sentence contains an unnecessary word... correct? Thank You The snake raised up its head and struck. Yes. This sentence has an unnecessary word. What do you think it is?
July 17, 2007 by Mandi

math
2 rectangles are similar. Which is a correct proprtion for corresponding sides? For one rectangle, the length is 12 and the width is 4. The other rectangle has 8 as the width and x as the length. I think it's 4/12=x/8. Is this right?
November 23, 2007 by keisha

Math correct
AM I RIGHT?? simplify (2x^2y^2z)^2(x^4y)^5 I CAME WITH 4x^13y^9z^2 FOR THE ANSWER.. convert the number to scientifc notation 13,550,000,000 I CAME WITH 1.355x10^9 FOR THE ANSWER
December 16, 2008 by Bryan

Math - exponential function
Find all real numbers that satisfy (6^x)(7^(2x)) = 86, 436. Here's what I did: ln(6^x)(7^(2x)) = ln86,436 ln(6^x) + ln(7^2x) = ln86,436 x = [ln(86,436)] / [(ln(6) + (2)ln(7)] x = 2 Please correct my answer! Thanks.
January 16, 2009 by Anonymous

Accounting
I can identified two stakeholders Big Eight accounting firm and Baker Greenleaf if these are correct and is there any others. In the case of The Dilemma of an Accountant. Who are the stakeholders and what is their stake in the case?
April 13, 2009 by tory

Physics
A table exerts a 1o newton force on a book which lies at rest on its top. The force exerted by the book on the table is? I think the answer is 10 newtons. Is this correct?
October 11, 2009 by Hannah

Math
Find csc(arctanx). Okay, I know arctangent is implied that it's x/1. I drew the triangle, and I believe the hypotenuse, c, is sqrt(x^2 + 1). I get sqrt(x^2+1)/x for csc(arctanx). Is this correct? If not, please explain. Thank you!
November 16, 2009 by Anonymous

Math(Please check)
Find f X g , g X f , and f X f f(x) = 3sqrt x-1 g(x) = x^3 + 1 For f(x) the 3 is little above the sqrt sign. My answers were: f(g(x)) = 3sqrt x^3 + 1 -1 g(f(x)) = 3sqrt (x-1)^3 -1 f(f) = 3sqrt x-1-1 My teacher said these were wrong. Please help. I do not know how to correct ...
March 30, 2010 by Hannah

math
find area of cirle 3.9cm radius to nearest tenth? a=pie 3.14 x r squared 3.14 x 3.9(15.21) 3.14 x15.21 =47.75 nearest tenth =47.8cm squared is this the correct answer?
May 23, 2010 by joshuah

science
is the following definition of smog correct: Smog is a mixture of smoke and fog or a noxious mixture of air pollutants that can often be seen as a haze in the air.
October 6, 2010 by Beauty

chemistry
What volume of 9.54M sodium chloride solution must be added to the correct amount of water to produce 750. mL of a .327 M sodium chloride solution?
November 17, 2010 by Dee

Spanish
Voy a la piscina means I'm going to the pool, correct? Would I say I'm going to the mail as Voy al correo. How do I say I need to send a card? Thank you
December 6, 2010 by Anna

English
I went to parent-teacher conferences, and it was not what I expected. I have learned that at parent-teacher conferences not all the parents show up. Are those sentences correct?
April 2, 2011 by Pete

Geometry
Rhombus ABCD has an area of 264 square units. If DB=12 units find AC. So far this is what I have- 1/2(264)=132 132/2=66 66-12=44units Is this the correct process?
April 10, 2011 by mary

French
I don't know when I should add an e to indicate female in verbs/tenses Is the following correct ? je me lave (masculine) or je me lavee (female) il se lave elle se lavee Many thanks Dympna
April 23, 2011 by Dee

biology
List 2 ways in which prokaryotic and eukaryotic cells are alike and 2 ways in which they are different. Is this correct? Alike= cell membrane and DNA Different=ribosomes and mitochondria
October 19, 2011 by Ty

biology
List 2 ways in which prokaryotic and eukaryotic cells are alike and 2 ways in which they are different. Is this correct? Alike= cell membrane and DNA Different=ribosomes and mitochondria
October 19, 2011 by Ty

Chemistry
I am stuck in the PLUG-N-CHUG PART. Here is what I get when I plug-n-chug...1.75 x 10-5 + log[0.164M/0.225M] I get the pH as 4.62 not confident in answer....please guide me to correct answer
November 17, 2011 by Chemistry Chick

math
I have solved the following questions, let me know if they are correct, thanks. 1. Simplify, and write in the base of 3: (9^x . 3^4x)^2 answer: 3^12x 2. Differentiate and simplify a. y= 3x^4 - 4e^x + 8 answer: 4(3x^3 - e^x) b. y= (3 + 4e^x)^5 answer: 20e^x (3+ 4ex)^4 c. y= (e^...
March 24, 2012 by help

Elem Math
The surface area of a rectangular prisms that are 3.5ft. x 4.25ft. x 6ft Answer 89.25ft 2.33 meters x 2.5meters x 4meters Answer 23.3 meters Am I correct
May 23, 2012 by AMERICAL

Chemistry
Most of the matter in the universe is of which element? How and where do elements more complicated than this form? Is this correct? Helium; more elements are form in the sun by nuclear fusion.
October 9, 2012 by Anonymous

physics
A charge of +Q and a charge of +2Q are separated by a distance r. The electric force of +2Q on +Q has a magnitude of F and is directed to the right. Which one of the following statements is correct regarding the electric force of +Q on +2Q?
November 7, 2012 by Lauren

Algebra2....
1.) Y=-lx+1l+3 Are these correct? y-intercept=(0,2) x-intercept=(4,0) (-2,0) vertex=(-1,3) domain=all real numbers range: y<=3 2.) A parabola has vertex (2,3) and it contains (0,0)....find the equation of the sleeping parabola.
December 19, 2012 by Anonymous

math
Find the base of a triangle whose area is 60in squared and whose height is 6 inches I did 1/2 bh=A 60=3b so b=60/3 b=20 then check so A=1/2bh A=1/2(20)6 A=1/2(120) A=60in squared is this correct?
March 17, 2013 by Liz

precalculus
Find all solutions for the equation 3cos(x)=cot(x). When do I use +2kpi? Is it only when I'm suppose to "find all solutions"? I got sin(x)=1/3. Is that correct?
April 14, 2013 by marie darling

math check
x is a binomial random variable. (Give your answers correct to three decimal places.) (e) Calculate the probability of x for: n = 3, x = 1, p = 0.45 P(x) = .I got 0.41 (f) Calculate the probability of x for: n = 6, x = 6, p = 0.25 P(x) = I got 1.50
June 7, 2013 by Gayle 57

Physics
A nurse counts 72 heartbeats in 1 min. Show that the frequency and period of the heartbeats are 1.2 Hz and 0.83 s, respectively. I responded as: frequency=72hb/min*1min/60sec Is this correct? Thank you
August 19, 2013 by Tracee

Grammar
This this grammatically correct? How much more did the United States buy than it sold in 1993? A: It bought $115 billion's worth more than it sold in 1993?
October 19, 2013 by Anonymous

Algebra
Write and then solve the equation for the following. Please correct me if I'm wrong!! 1. If 3x+2x is equal to 15, what is the value of x? Answer: x=3 2. If three times the quantity (4y-2) is equal to 18, what is the value of y? Answer: y=1
August 31, 2014 by Anonymous

Chemistry
A 5 oz carrot is burned in a calorimeter containing 10.0 lb of water. The water heats up from 20.5 oC to 22.8 oC. How many Calories are in the 5 oz carrot? Round to correct sig. fig. 1 Cal = 1000 cal.
September 11, 2014 by Izzy

English
Dogs have helped blind people for many years. They are not only helper animals. ---------------------------- Is the expression 'helper animals' correct? Do you have other expressions for that?
November 1, 2014 by rfvv

Pre-Calc/Trig...
is this the correct formula for me to solve this? A bacteria culture has 2,000 bacteria. The number of bacteria increases by 5% each hour. How many bacteria are there after 12 hours? 2,000*0.05^(12-1)
December 3, 2014 by Anonymous

Math
Choose all measurements that are equivalent to 45 meters. a 450 centimeters b 4500 centimeters c 0.045 kilometer d 0.45 kilometer e 4500 millimeters I pick b, d, e is this correct.
March 26, 2015 by Sam

geometry
I tried to figure this problem out, Did I do it correct? m<XWY = 2x+5, m<YWZ = 5x-79, m<XWZ = 122 degrees. m<XWZ = ? I got 28. (2x+5)+ (5x-79 = 122 degrees. 7x = 196 = 28. Did I do It right?
April 14, 2015 by miranda

Algebra ll
Please help..I do not understand any of this... Analyze the graph of the function f(x)=x^2+x-42/x+3 a.)what is the domain? b.)what is the equation of the vertical asymptote of f(x)? c.)What is the equation of the horizontal or oblique asymptote? d.) choose the correct graph.
May 11, 2015 by Sherri

reading
If you were reading a story and you came across a word you don't know, where would be the first place you would look for a definition -- glossary or a dictionary? I think glossary am i correct?
September 15, 2015 by hanah

science
In photosynthesis is carbon dioxide reduced to glucose while water is oxidized to oxygen? am I correct? If not, can someone explain what's reduced into what and what's oxidized into what? thanx =]
September 24, 2015 by Anonymous

Math
a test 50 problems on it. for every correct answer, 2 points are given. for each incorrect answer, 1 point is subtracted. sue scored 85 points. how many problems did she miss?
October 7, 2015 by Anonymous

bearing
Pq and R are point in the same horizontal plane.the bearing of Q from P is 150% and the bearing of R from Q is 060%.if line (PQ)is 5cm and line (QR)is 3cm find the bearing of R from P correct to nearest degree
November 2, 2015 by Max de-laurel model college

US History
What role did the media play in the development of popular thinking related to the Spanish-American War? What is the correct role of news media in war time?
February 5, 2016 by Anthony

English
In Act IV, of Romeo and Juliet, Why do Juliet's parents think she is crying? 1:Because Romeo wash banished 2: Tybalt is dead 3: Because she did not want to marry Paris I think it is 2 is this correct? Thank you
March 17, 2016 by Marylyn

English
Which word is the subject and verbs in the sentence. Jamie's dog and his cat are good friends, most of the time. subject: dog and cat verb: are Is this correct?
July 23, 2016 by Kimmy

math 7th grade
The length of a rectangle is 5 more than 3 times the width. Write and solve ad equation to find the width(w) if the length is 12.5cm 12.5= 5 + 3w w=2.5cm is this correct? thank you.
November 9, 2016 by judy/check my work thank you

Science
To become more stable an atom that has two electrons in its outer energy level will gain two electrons A.) True B.) False That false correct?
December 8, 2016 by Megan

Child Care
In which of the following situations do you,as a caregiver,act as a role model for prosocial behavior? A.You remind Josha to hang up his coat. B. You help Michael to clean up the box of crayons he dropped. C. Y ou create a corner in which musical instruments can be played. D. ...
February 14, 2009 by Cindy

Chemistry
I know this is supposed to be a really easy concept, but I need help with balancing redox reactions: KClO3 ==> KCl + O2 My textbook says to write the ionic equation next, which I have written like: K(+1) + ClO3(-1) ==> K(+1) + Cl(-1) + O2(-2) (the number in parentheses ...
May 17, 2010 by Emily

english
correct the following run-on sentences by combining them using a conjunction and,but,or or a semicolon ; A)Patty and I love to go to the berach we leave early in the morning to beat the crowds. b)Jim and Peter are my best friends they have been since grade ten. c)I cant go ...
June 3, 2010 by kristen

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