# Short answer find the quotient 6x^3-x^2-7x-9 ------------ 2x+3

143,010 questions, page 165-
## Instructional materials:Their preparation and Use

if you could help please do 3. A document camera is more versatile than an opaque projector because you can use it to A. record sound. B. project three-dimensional objects. C. display book pages on a screen. D. view colored items. 4. Which one of the

*asked by beth on June 9, 2011* -
## Chemistry

1. Which metal is the most easily oxidized? A.) highly active metal *B.) moderately active metal C.) slightly active metal D.) an inactive metal 2. What happens in a voltaic cell? *A.) Chemical energy is changed to a electrical energy. B.) Electrical

*asked by Jose on March 27, 2013* -
## Chemistry

1. Which metal is the most easily oxidized? A.) highly active metal *B.) moderately active metal C.) slightly active metal D.) an inactive metal 2. What happens in a voltaic cell? *A.) Chemical energy is changed to a electrical energy. B.) Electrical

*asked by Jack on March 27, 2013* -
## Math

A teacher asks each student in the class to randomly choose a number between 1 to 80 and write it down. Devon and Michiko write down a number. What is the probability that both of their choices will be greater than 60? Express your answer as a decimal. If

*asked by Nikol on March 5, 2018* -
## physics

A window washer drops a brush from a scaf- fold on a tall office building. What is the speed of the falling brush after 2.7 s? (Neglect drag forces.) The acceleration due to gravity is 9.8 m/s2 . Answer in units of m/s How far has it fallen in that time?

*asked by Melanie on September 20, 2012* -
## Math

Hayley has 16 square boxes to make an array of rectangular shapes on a grid. Harry says if she uses 19 square boxes she will get more arrays. Do you aree or disagree with Harrys' claim? Explain your answer using prime and composite numbers. Use the

*asked by Parker on February 12, 2012* -
## Chemistry

A 110g piece of copper is heated and the temperature changes from 38C to 172C. The heat absorbed is 686 cal. What is the specific heat of copper. I think the answer is .385, but I have tried 100 different ways to get this answer or anything close, and I am

*asked by lulu on April 17, 2016* -
## Physics (algebra-based)

A child holds a candy bar 13.4 cm in front of the convex side-view mirror of an automobile. The image height is reduced by one fifth. What is the radius of curvature of the mirror? Answer in units of cm. I did 1/5=-image distance (i)/13.4-->i=-2.68

*asked by Rebecca on December 1, 2013* -
## math

What is the height of the coaster when the velocity is 90 ft/sec? Show all work using the equation editor and label your final solution. Round your final answer to the nearest hundredth, but remember you should NOT round in the middle of the question.

*asked by ayoma on July 30, 2016* -
## world history

where was Srivijaya centered? a.Cambodia B. Burma C. Sumatra D.The Malay peninsula MY answer C which of these characterized Baghdad under the Abbasid's? A. small, Arab, agricultural b New ,cosmopolitan, multi ethnic c. small, commercial, Persian d. large,

*asked by sandra on July 17, 2015* -
## chemistry

2Al (s) + 3Cl2 (g) 2 AlCl3 (s) i)obtain the limiting reagent. when 2.00 mole of Cl2 (g) is reacted with 54.3 g of Al (p). ANSWER : Cl is limiting reagant. 54.3gAl(p)/27 = 2.01AI(P) Initial = 2.01 mol 2 mol divied = 2.01/2 2/3 = 1.005 =0.67 cl is

*asked by ren on November 23, 2014* -
## English

Identify each sentence with declarative, interrogative, imperative or exclamatory and add punctuation. 1. Be thankful that George Eastman invented the film for your camera. Answer: declarative 2. How easy is it to take pictures today? Answer: interrogative

*asked by Kimmy on July 23, 2016* -
## Algebra

Square lot. Sam has a lot that he thought was a square, 200 feet by 200 feet. When he had it surveyed, he discovered that one side was x feet longer than he thought and that the other side was x feet shorter than he thought. a). Find a polynomial A(x) that

*asked by michelle on July 28, 2010* -
## English

Can you help me check these sentences on family and hobbies? I need to know if the word choice is correct. Thank you. 1)I’ve got short, curly, blond hair and blue eyes.In my family we are three: my mother, my father and I (not me). Correction: In my

*asked by Henry2 on September 20, 2011* -
## math

ben and glen are practicing short golf shots. they are aiming for a flag that is 110 yards away? they consider any shot between 105 and 115 yards to be accurate. here are their results in yards. ben: 110,130,88,105,108,110,118,100,120,103.and Glen:

*asked by theresa on January 6, 2012* -
## English

I left out the last sentences on "fiction". Thank you very much, Writeacher! 1) The point of view can be fixed, when the story is told from a single point of view, as in Defoe’s Robinson Crusoe, or shifting, when perspective moves from one character to

*asked by Henry2 on February 20, 2012* -
## Calculas

Find an equation of the line that is tangent to the graph of f and parallel to the given line. Function Line f(x) = 2x^2 6x – y + 4 = 0 I know i have to find derivative 1st which will be f'(x)=4x but then how to i find equation do i plug 6 in for x so

*asked by Anonymous on February 14, 2012* -
## Math please help

Find an equation of the line that is tangent to the graph of f and parallel to the given line. Function Line f(x) = 2x^2 6x – y + 4 = 0 I know i have to find derivative 1st which will be f'(x)=4x but then how to i find equation do i plug 6 in for x so

*asked by Anonymous on February 14, 2012* -
## MATH

Find an equation of the line that is tangent to the graph of f and parallel to the given line. Function Line f(x) = 2x^2 6x – y + 4 = 0 I know i have to find derivative 1st which will be f'(x)=4x but then how to i find equation do i plug 6 in for x so

*asked by Anonymous on February 14, 2012* -
## math

Find the dimensions of a rectangle with perimeter 40 with the largest area. (hint: Find an equation for area and one for perimeter, use both to find perimeter in terms of one variable)

*asked by Jordan on March 20, 2012* -
## Algebra 2

ABCD is a square . if the coordinates of three of its vertices are A(-1,2a), B(a,2a), C(a,0), find the coordinates of D. BC is obviously 2a (it's a vertical line) then AB must be 2a (notice AB is horizontal) so BC = AC because it is a square 2a = a+1 a=1

*asked by lana on July 25, 2007* -
## stats

A researcher hypothesizes that a new herbal supplement improves memory. A sample of n = 25 college students is obtained and each student takes the supplement daily for six weeks. At the end of the 6-week period, each student is given a standardized memory

*asked by Komal on October 23, 2012* -
## physics

A jet travels at 433 m/s. How long does it take to travel 210 m? Answer in units of s How long to travel 12.4 km? Answer in units of s How long to travel 11 in? Answer in units of s thank you

*asked by anon on September 25, 2011* -
## math

The amount of pollution, A (in part per million), present in the air outside a factory on a recent weekday is represented by the equation A= -t^2+16t+6, where t is the number of hours after 7 AM. (a) find the Times (in radical form) when there were 42

*asked by Evy on November 18, 2013* -
## Physics

A vibrating structural beam in a spacecraft can cause problems if the frequency of vibration is fairly high. Even if the amplitude of vibration is only a fraction of a millimeter, the acceleration of the beam can be several times greater than the

*asked by Cooper on November 17, 2011* -
## English

I have to write a thematic essay and a characteristic essay. I have a few questions in the writing. I am in grade 11 right now. 1) what should I include in the introduction? Whenever I write anything about the story, my tutor says that is summarizing and I

*asked by Anonymous on August 28, 2015* -
## Early Childhood Ed. Question--Please Help!

To capitalize on children's different learning styles, teachers should: 1.teach lessons using a multi-sensory approach. 2.use their own learning style to teach and let the children match them. 3.separate children by learning styles and seat children near

*asked by Bethany on April 7, 2007* -
## calculus

A corporation starts to invest part of its revenue continuously at rate of P dollars per year in a fund for future expansion plans. Assume the fund earns money at an annual interest rate, r, compounded continuously. The rate of growth of the amount A in

*asked by Anna on February 6, 2018* -
## phys urgent!

A particle leaves the origin with a speed of 2.4 times 10^6 m/s at 38 degrees to the positive x axis. It moves in a uniform electric field directed along positive y axis. Find Ey such that the particle will cross the x axis at x = 1.5 cm if the particle is

*asked by kenzie on September 2, 2014* -
## physics

A pinball machine launches a 139 g ball with a spring-driven plunger. The game board is inclined at 8 ◦ above the horizontal. Assume: The plunger’s mass and frictional effects are negligible. The acceleration of gravity is 9.8 m/s2 Find the force

*asked by Anonymous on December 7, 2015* -
## Need help World Geograpy

3. Among the northern Andean countries strongly involved in the illegal coca and drug trade, __________ is now the predominant coca producer. A. Colombia B. Bolivia C. Peru D. Ecuador Student Answer: C Answer: Incorrect Reference: 6. Which of the following

*asked by sue on January 3, 2014* -
## business

Write a four paragraph answer, citing the text, to – Would you be willing to pay $500 today in exchange for $10,000 in 30 years? What would be the key considerations in answering yes or no? Would your answer depend on who is making the promise to repay?

*asked by charrise on September 15, 2010* -
## Math

Tiffany is using wooden cubes to make rectangular prisms. if she has exactly 8 wooden cubes, make a model to find the length, width, and height of the two possible rectangular prisms. i don't quite understand the question so can u help me comprehend what

*asked by Angelina on March 29, 2015* -
## trig

Find all solutions to the following triangle. (Round your answers for angles A, C, A', and C' to the nearest minute. Round your answers for sides a and a' to two decimal places. If either triangle is not possible, enter NONE in each corresponding answer

*asked by janice on November 16, 2012* -
## Phy

The index of refraction for a diamond for red light of wavelength 655 nm is 2.35, while that for blue light of wavelength 437 nm is 2.26. Suppose white light is incident on the diamond at 29.5. Find the angle of refraction for red light. Answer in units

*asked by Joila on February 18, 2012* -
## trig

Find all solutions to the following triangle. (Round your answers for angles A, B, A', and B' to the nearest minute. Round your answers for sides a and a' to the nearest whole number. If either triangle is not possible, enter NONE in each corresponding

*asked by janice on November 16, 2012* -
## Trig

A force of 323 newtons makes an angle of 54 degrees and 20 minutes with a second force. The resultant of the two forces makes an angle of 39 degrees forty minutes with the first force. Find the magnitude of the second force. I have the answer, 814.3022,

*asked by Brittany on October 19, 2010* -
## math

sarah owns a small business there was a loss of 19 dollars on thursday and a loss of 12 dollars on friday on saturday there was a profit of 15 dollars find the total profit or loss of the four days A- $35 loss B- $ 19 profit C- $ 27 loss D- $ 57 loss my

*asked by Megan on April 12, 2016* -
## maths

in a group of 60 children 31 speak French 23 speak Spanish 14 neither French nor Spanish find the number of student who speak: (a)both French and Spanish (b)French only (c)Spanish only draw a venn diagram please answer quickly

*asked by amrita on September 23, 2014* -
## Physics

Find the torque on the meter stick for each situation. Ignore the mass of the meter stick. At 1/2 meter there is a 1000g weight. At 1 meter on the same stick there is a 500g weight. What is the torque? Not understanding how to come up with this answer.

*asked by John on July 3, 2016* -
## Math

Please help! I am confused about this question and can not seem to get the answer. Thanks! 1) You choose a marble at random from a bag containing eight brown marbles, seven yellow marbles, and one purple marble. You replace the marble and then choose

*asked by Tia on May 14, 2015* -
## Calculus

Using the Fundamental theorem of Calculus find the derivative of F(x) = sec(3x) + ∫ [e^-(t^(2))] Integral from ( 0 to tan(3x) ) f(x) = sec(x) f'(x)= sec(x)tan(x) and according to the fundamental ToC, u plug the x value of the integral into the the t

*asked by Cold on November 21, 2018* -
## Algebra

A rectangular picture is twice as long as it is wide and is to be mounted on a mat with the same proportion. If the picture is 18 inches wide, can it be mounted on a mat of 259 square inches? To answer this, find the width of the mat.

*asked by Jocelyn on October 2, 2016* -
## math

So for this question it says, the graph of the function f(x)= radical of x+4 is shown. The domain of the function is 1) {x|x is greater than 0} 2) {x|x is greater or equal to 0} 3) {x|x is greater than -4} 4) {x|x is greater than or equal to -4} I know

*asked by mariam on May 25, 2017* -
## Physics

1-A car is lifted a certain distance in a service station and therefore has potential energy with respect to the floor. If it were lifted twice as high, how much potential energy would it have? Answer: twice as much 2-Two cars, one twice as heavy as the

*asked by Emily on December 9, 2009* -
## Physics

A uniform cylindrical spool of mass M and radius R unwinds an essentially massless rope under the weight of a mass m. If R = 12 cm, M = 400 gm and m = 50 gm, find the speed of m after it has descended 50 cm starting from rest. Solve the problem twice: once

*asked by Nora on March 31, 2015* -
## math,correction

can someone correct these for me i'll appreciate it thank. dirctions: solve 3x-7=2x+8 my answer: x = 15 directions: solve 2/5x=-10 my answer: x = -25 Directions: solve -3(x+1)=2(x-8)+3 my answer: x= -3.2 1 looks ok. Show your work on 2 and 3 and we can

*asked by jasmine20 on January 11, 2007* -
## CRT

Identify at least two arguments in the article. Outline the premises and conclusions of each argument you find. Then, answer the following questions for each argument, making sure to explain how you arrived at your answers. o Do the premises sufficiently

*asked by Gail on October 29, 2009* -
## Math Problem (please help)

A company that manufactures bicycles estimates that the profit P (in dollars) for selling a particular model is given by the equation shown below, where x is the advertising expense (in tens of thousands of dollars). P = –35x3 + 2500x2 – 275000, 0 ≤

*asked by Ada on September 12, 2014* -
## Math

I'm really struggling with how to set this up: A company has 18 members on its management team,10 men and 8 women. There is a conference in Hawaii, and the company decided to send 5 people. If the selection of five people is random, find the following

*asked by Samantha on November 4, 2010* -
## Math

The weight w of an object varies inversely as the square of the distance d from the center of the earth. At sea level (3978 miles from the center of the earth), an astronaut weighs 110 pounds. Find her weight when she is 139 miles above the surface of the

*asked by Stacy on September 24, 2014* -
## math

The cottage will be built on a concrete slab 100 mm thick. Concrete costs $150/m^3 and reinforcing mesh for the slab costs $7/m^2. Find the cost of materials for the slab. Both the concrete and the reinforcing mesh will be ordered in lots of whole units.

*asked by Anonymous on October 6, 2018* -
## chemistry

In a buffer pre-lab, we were asked to complete a table for 10 test tubes. In tube 1, you had 0.20 M of acetic acid only and were asked to find the pH. I think the answer is 2.72 (using a ICE table). In tube 2, you have 90 mL of Acetic Acid and 10 mL of

*asked by Trina on May 16, 2011* -
## Statistics

smith is a weld inspector at a shipyard. he knows from keeping track of good and substandard welds that for the afternoon shift 5% of all welds done will be substandard. If Smith checks 300 of the 7500 welds completed that shift, would it be unusual for

*asked by Samantha on December 1, 2013* -
## physics

An object rests on the surface of planet y. Its mass is unknown. Find the acceleration due to gravity near the surface of planet y. Answer in m/s/s. G=6.673x10^-23 radius of planet y=2439700m mass of planet y=3.302x10^23kg radius of planet x=71492000m mass

*asked by camille on April 10, 2011* -
## physics

A car is driving in the negative X direction at a steady speed of 15 m/s. if it starts at a position of 30m: What is its displacement in the first second? My answer was 15m and used Xf-Xo (final-initial) to find the displacement What is his displacement in

*asked by Matt on September 21, 2016* -
## algebra

can someone please help me with my algebra? you don't have to answer every question but I'm very confused, this is algebra 1b unit 6 sample work simplify the rational expressions. state any excluded values 1. 36x^3 / 42x^2 2. -70n^2 / 28n 3. 2r-4 / r-2 4.

*asked by help on June 12, 2019* -
## Calc

A paper cup is to be designed in the shape of a right circular cone. It must have a capacity of 12 fluid ounces (1 fluid ounce = 1.80469 cubic inches) of soft drink but it must use a minimum amount of material in its construction. What should the

*asked by jo on July 30, 2012* -
## prob and stats

11. Assume that the population of heights of male college students is approximately normally distributed with mean m of 72.15 inches and standard deviation s of 6.39 inches. A random sample of 96 heights is obtained. Show all work. (A) Find (B) Find the

*asked by Anonymous on October 24, 2012* -
## stat

Assume that the population of heights of female college students is approximately normally distributed with mean m of 67.26 inches and standard deviation s of 5.96 inches. A random sample of 78 heights is obtained. Show all work. (A) Find (B) Find the mean

*asked by tina on December 10, 2011* -
## algebra

find the equations that represent the graph below. i know how to find the slope but this graph gives me numbers in hundreds for the vertical axix. and one-digit numbers for horizontal axis how do i find the slope if its like that?

*asked by Anonymous on March 29, 2013* -
## Pre-Cal

1) Write the first five temrs of the geometric sequence a1 = 2 r=sqrt3 I know the first term is 2 but the sqrt 3 threw me off so I do not know how to find the next numbers. 2) Find the nth term of the geometric sequence. a2 = 3 a5 = 3/64 n=1 I know the

*asked by Abbey on April 4, 2010* -
## Pre-Cal(Please help)

1) Write the first five temrs of the geometric sequence a1 = 2 r=sqrt3 I know the first term is 2 but the sqrt 3 threw me off so I do not know how to find the next numbers. 2) Find the nth term of the geometric sequence. a2 = 3 a5 = 3/64 n=1 I know the

*asked by Abbey on April 4, 2010* -
## Calculus

Find the outside and inside functions of the following to find their derivatives: 1) sqrt(2x+9) 2) cos(cos(x)) 3) tan(x) I already know how to find their derivatives I'm just not exactly sure what parts of the chain rule equation would be considered the

*asked by Robin on June 18, 2013* -
## AP Calculous

A particle moves on the x –axis so that its position at any time is given by x(t) = 2t3 + 1. a. Find the acceleration of the particle at t = 0. b. Find the velocity of the particle when its acceleration is 0. c. Find the total distance traveled by the

*asked by Yoona on November 6, 2011* -
## calculous

A particle moves on the x –axis so that its position at any time is given by x(t) = 2t3 + 1. a. Find the acceleration of the particle at t = 0. b. Find the velocity of the particle when its acceleration is 0. c. Find the total distance traveled by the

*asked by Yoona on November 7, 2011* -
## physics

The time needed for a water wave to change from the equilibrium level to the crest is 0.4185 s. What fraction of a wavelength is this? What is the period of the wave? Answer in units of s. What is the frequency of the wave? Answer in units of Hz

*asked by amaaa on April 18, 2013* -
## Algebra

What are the coordinates of the points where the graphs of $f(x)=x^3-x^2+x+1$ and $g(x)=x^3+x^2+x-1$ intersect? Give your answer as a list of points separated by semicolons, with the points ordered such that their $x$-coordinates are in increasing order.

*asked by Math N00b on January 4, 2018* -
## Intro to chem

What is the volume of 19.7g of oxygen at STP? Heres what i got but did not get the same answer..pls tell me where i am wrong! (grams to moles) 19.7g x 1 mol/ 16.00 = 1.23 mol Oxygen (Pv=nRT) looking for V 1.23 mol x 0.0821 x 273K / 1.00 atm = 27.57 CORRECT

*asked by pooja on April 14, 2011* -
## chemistry

Using your answer from Part A, calculate the volume of a mole of Na atoms (in cm3/mol ). Assume that the entire volume is occupied by Na atoms leaving no gaps or holes between adjacent atoms. (Answer A is V= 2.70*10^7)

*asked by sara on November 10, 2008* -
## Physics

A(n) 12600 lb railroad car traveling at 7.4 ft/s couples with a stationary car of 6490 lb. The acceleration of gravity is 32 ft/s2. What is their velocity after the collision?Answer in units of ft/s. What impulse did the first car receive?Answer in units

*asked by Anonymous on April 7, 2016* -
## Physical Science

Hello, Do I have the right answer? my answer D Thank You, In the chemical equation Zn+2HCL -> ZnCI2 + H2, the reactants are A: zinc chloride and hydrogen B: zinf and hydrogen carbonate C: zinc chlorate and water D: zinc and hydrochloric acid

*asked by Mandi on March 6, 2008* -
## Physics

The time needed for a water wave to change from the equilibrium level to the crest is 0.4185 s. What fraction of a wavelength is this? What is the period of the wave? Answer in units of s. What is the frequency of the wave? Answer in units of Hz.

*asked by Aj on October 21, 2012* -
## Math

there are 10 questions in a quiz competition 5 marks will be given for each Correct answer 3 marks will deducted for each wrong answer or no response m be the number answers and s be the obtained .write down the formula for calculating the marks obtained

*asked by Venus on February 5, 2017* -
## Pysics

A(n) 12600 lb railroad car traveling at 7.4 ft/s couples with a stationary car of 6490 lb. The acceleration of gravity is 32 ft/s2. What is their velocity after the collision?Answer in units of ft/s. What impulse did the first car receive?Answer in units

*asked by PLS HELP!! on April 9, 2016* -
## physics

The figure below shows three charges at the corners of a rectangle of length x = 0.65 m and height y = 0.42 m. What is the electric potential at the center of the rectangle? the picture is of a rectangle with -6.1,+2.7,-3.3 as charges. Your submitted

*asked by cassie on February 2, 2015* -
## math 2

brittany has a gift box in the shape of a cube. each side of the box measures 15 centimeters. what is the volume of the gift box? is the answer 255, 1,250, 3,375, or 3,475 and how did you arrive at that answer

*asked by kimmy plus on March 6, 2014* -
## Math

A car travels 27 miles in 30 minutes. How is the rate in miles/min. I understand I need to divide 27 by 30 and when I do that I get .90, but then how do I correctly label my answer, .9 miles/min? That doesn't seem like an answer that really makes sense for

*asked by Anonymous on January 19, 2016* -
## Quadratic Equations

The question is Is the point (-3, -2) a solution of the intersection of the following set of quadratic equations: Y < -X^2 X^2 + Y^2 < 16 I guess I am somewhat confused by the way it's written. Would I be graphing this to find out? I'm so confused with

*asked by Greg B. on June 12, 2012* -
## Math

I need help with these 3 problems. 1. An amusement park charges admission plus a fee for each ride you go on. 2 admissions and 5 rides cost $22. 2 admissions and X rides cost $24. What is the charge for 1 admission and the charge for 1 ride. 2. Find the

*asked by Jessica on June 28, 2010* -
## algebra

find two numbers such that if 7 is added to the greater the answer is four times the smaller number, while 28 added to the smaller number is equal to twice the greater number.

*asked by fatimah on July 9, 2014* -
## Math

A boy is 42 years younger than his father .In 8 years' times , he will be 1/4 times as old as his father .Find their present ages. (Answer is boy= 6, father= 48)

*asked by Sam on October 10, 2017* -
## Geometry-PLEASE CHECK ANSWERS!

In isosceles triangle DEF, DE=DF. Which of the following is true? 1)

*asked by Laurie on February 23, 2010* -
## College Algebra

Part 1: What is the formula for the volume of a rectangular solid? Find an object in your residence that has the shape of a rectangular solid. Measure and record the length, width, and height of your object in either centimeters (to the nearest 10th of a

*asked by Nicole on January 25, 2009* -
## Algebra

1. Nine students ask to visit a college admissions counselor. Each scheduled visit includes one student. In how many ways can they be scheduled? **They can be arranged in 45,360 different ways.** 2. Evaluate 8P2 Using the permutation formula, **The answer

*asked by |-/ on April 25, 2018* -
## physics

We're in class with a SIL decibel meter up front, and everyone is screaming at the top of their lungs, hooting and shouting and pounding on their desks, shooting off firecrackers, its Phys 1240 gone wild...and the meter is reading a reasonably steady sound

*asked by Student in Need on March 29, 2011* -
## Law and Ethics

1. Rollo says that the standard of behavior required in specific situations that arise in medical office is referred to as protocol. John sys its precedent. Who correct A. Both are correct B. Only John is correct C. Only Rollo is correct D. Neither is

*asked by Kim on June 20, 2013* -
## Chemistry

A mixture of 1.39 g H2 and 1.60 g He is placed in a 1.00-L container at 27°C. Calculate the partial pressure of each gas and the total pressure. PH2 = ? atm PHe = ? atm Ptotal = ? atm Please put answer so i can compare to my answer

*asked by Rashid on April 5, 2013* -
## math

how do you estimate fractions? I know how to estimate numbers and decimals but the questions wants us to estimate fraction sand have the answer in fraction form. the question is : 2 1/10 divided by 1 1/5= how would these be estimated? without estimating I

*asked by E6 on October 23, 2014* -
## Calculus

I tried to integrate this: intergral sign with an interval from -inifinity to + infinity function: (x-r)^2 (1/r) (e^(-x/r)) with respect to dx..... I know that Steve set up the u-substitution but I seem to never arrive at an answer... It seems like I keep

*asked by Christina on November 28, 2015* -
## math

Clarence is a salesman who receives 8% commission on every sale he makes . If his most recent sale helped him earn $216 in commission , how much was his sale ? I tried this but getting the wrong answer actual answer is $2,700

*asked by sai on November 1, 2017* -
## Chemistry

What is the energy in Joules of a mole of photons of microwave light having a frequency typical of microwave? (frequency = 3.0 x 10^9 Hz) I tried using the equation E= h x frequency, but I ended up with the answer 1.98 x 10^-24 instead of the correct

*asked by Sarah on November 14, 2012* -
## chemistry

Write a balanced equation for the neutralization of each of the following. Express your answer as a chemical equation. Identify all of the phases in your answer. Part A: H3PO4(aq) and NaOH(aq) Part B: Hl(aq) and LiOH(aq) Part C: HNO3(aq) and Ca(OH)2(aq

*asked by Lisa on April 1, 2012* -
## Math

In 500cmcube of alcohol solution the percentage of alcohol by volume is 80%. Find the volume of water that must be added to the solution so that the ratio of the volume of alcohol to that of water becomes 5:2? Please some one give me answer

*asked by Mani on November 18, 2012* -
## Algebra

Amy has some money in her checking account. If she writes a check for $40.50, her checking account will be overdrawn by $21.50. Find how much money is Amy’s checking account now. My Answer (please correct if wrong): 40.5 - (-21.50) = x

*asked by Katelyn on September 24, 2017* -
## adv function

an unknown polynomial f(x) of degree 32 yields a remainder of 1 when divided by x-1 and a remainder of 3 when divided by x-3, find the remainder when f(x) is divided by (x-1)(x-3). What is the answer? and i was wondering if the part about the polynomial

*asked by AA on October 4, 2016* -
## Maths

The question is find the common factors of 12x, 36 When we solve it ; 12x =2×3×2×(×) 36=2×3×2×3 Common factors 2 , 2 and 3 then why fo we multiply the these numbers *in my book the answer is 2×2×3 =6 ( the question says common factors not hcf )

*asked by Jess on October 11, 2016* -
## Calculus 2

A culture of bacteria is growing at the rate of 20e^0.8t cells per day, where t is the number of days since the culture was started. Suppose that the culture began with 50 cells. (a) Find a formula for the total number of cells in the culture after t days.

*asked by Alexis on September 18, 2016* -
## Linear Algebra

Help me find my error! a)Write down the equation of the plane passing through the point (1,5,7) and parallel to the lines. Line A: Line B: Point x = 3- 2t x = 2 - 2t y = 1 - 5t y = 3 - 2t z = 2 - t z = 1 + 4t Parametric equation of the plane = + t1 + t2

*asked by Leo on December 6, 2018* -
## Chemistry

for a question it is given that there is 14.6 g of calcium chloride in 246 g of water. Kf is 1.86 C/m we need to find the freezing point of this solution. when i do the calculations, i get the freezing point to be -0.99 (without using the vant hoff factor

*asked by Ania on November 8, 2012*

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