# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 116-
## SIMPLE INTREST!

Kenneth recentley started a new job. his starting gross monthly salary was 3200. Each year on the anniversary of his starting date, kenneth is promised a 7% raise. If keneth works for 5 years what was his gross annual income in his fifth year of work? my

*asked by BRANDY! on October 19, 2006* -
## Chemistry

What is the molarity of this dichromate solution? A potassium dichromate solution of an unknown molarity was used to titrate a solution of FeSO4 prepared by dissolving a 0.350g of pure iron wire in H2SO4 and reducing the FE3+ produced to FE2+. 36.24 mL of

*asked by ANONYMOUS on December 2, 2012* -
## Chemistry- Acids and Buffers

Cyanic Acid is a weak acid HOCN + H2O H3O+ +OCN- ka= 3.5*10^-4 a) if 2.5ml of 0.01 M cyanic acid solution is added to 25.0 ml of a formis acid buffer with ph = 3.70, what is the ratio of [OCN-]/[HOCN] in the resulting solution? b) determine the pH of a

*asked by Tasneem on April 9, 2012* -
## chemistry

Which of the following is true for a buffered solution? The solution resists any change in its [OH-]. The solution will not change its pH very much even if a concentrated acid is added. The solution resists any change in its [H+]. All of the the statements

*asked by Meep on May 2, 2019* -
## Chemistry

A sample of 25.00 mL of vinegar is titrated with a standard 1.02 M NaOH solution. It was found that a volume of 19.60 mL of the standard NaOH solution is used to completely neutralize the acetic acid in the solution. Calculate the concentration of the

*asked by Allie on March 9, 2008* -
## Pre-Calc

How do I solve this? My work has led me to a dead end. tan(45-x) + cot(45-x) =4 my work: (tan45 - tanx)/(1+ tan45tanx) + (cot45 - cotx)/(1 + cot45cotx) = 4 (1-tanx)/(1+tanx) + (1-cotx)/(1+cotx) = 4 Then I found a common denominator, giving me this:

*asked by Jess on February 7, 2007* -
## College Algebra

Part 1: Suppose that the number of new homes built, H, in a city over a period of time, t, is graphed on a rectangular coordinate system where time is on the horizontal axis. Suppose that the number of homes built can be modeled by an exponential function,

*asked by Vision/Help! on November 3, 2007* -
## Big review 4 finals (2 posts in 1) check my work

A 7.58 gram sample of benzoic acid, C6H5CO2H, is dissolved in 100 mL of benzene. The density of benzene is 0.879 g/mL. What is the molality of the benzoic acid? Sol: Convert mL to grams benzene. 100 mL * (0.879g benzene/1 mL) = 87.9 g Molality = #

*asked by Kizner (chem) on June 14, 2006* -
## Algebra

Two cell phone companies have different rate plans. Runfast has monthly charges $8 plus $8 per gig of data. B A &D’s monthly charge is $15 plus $4 per gig of data. Your task, is to determine under what circumstances each company has the better pricing.

*asked by Kim Sohyun on May 1, 2019* -
## chemistry

Assuming all volume measurements are made at the same temperature and pressure, how many liters of oxygen gas would it take to react completely with 7.25 liters of hydrogen gas? Show all of the steps taken to solve this problem. Unbalanced equation: H2 (g)

*asked by kendra on July 14, 2011* -
## college algebra

By setting up and solving a proportion involving x, find the value of x for the car that you have chosen. State the type of car, the mileage, and show both the set up of the proportion and the steps to solve. Include units with your answer. How would I do

*asked by Stephanie on February 23, 2010* -
## Algebra II

Find the exact solution(s) of the system: (x^2/4)-y^2=1 and x=y^2+1 Answer:(4,sqrt3),(4,-sqrt3) 2)Write an equation for an ellipse if the endpoints of the major axis are at (-8,1) and (8,1) and the endpoints of the minor axis are at (0,-1) and (0,3).

*asked by Lucy on April 19, 2008* -
## Chemistry

Consider the system: A (aq) → B (aq) at 293 K where ΔGo of formation A = -11.3 kJ/mol and ΔGo standard of formation B = -12.9 kJ/mol. Calculate the concentration of A at equilibrium when 2.41 mol of A and 1.35 mol of B are mixed in water to form

*asked by Edgar on March 11, 2019* -
## Algebra II

Find the exact solution(s) of the system: (x^2/4)-y^2=1 and x=y^2+1 Answer:(4,sqrt3),(4,-sqrt3) 2)Write an equation for an ellipse if the endpoints of the major axis are at (-8,1) and (8,1) and the endpoints of the minor axis are at (0,-1) and (0,3).

*asked by Lucy on April 26, 2008* -
## CHEMISTRY

1)If 36 mL of KMnO4 solution are required to oxidize 25 mL of 0.02932 M NaC204 solution, what is the concentration of the solution? 2)A Certain brand of iron supplement contains FeSO4-7H2O with miscellaneous binders and fillers. Suppose 22.93 mL of the

*asked by june on October 27, 2010* -
## Math

A laboratory has 60 cubic centimeters of a solution that is 40% HCI acid. How many cc of a 15% solution of HCI acid should be mixed with the 60 cc of 40% acid to obtain a solution of 25% HCI? How much of the 25% solution is there? I don't know how to write

*asked by a on October 3, 2010* -
## Accounting

I am researching a company for my class. I am supposed to identify the depreciation method in use. How do I do this? I've searched through their annual report and they don't explicitly say. You will probably have to call company HQ and ask to be put in

*asked by AcctStudent on August 11, 2007* -
## math

To find the area, but the easiest approach is using Brahmagupta’ s formula1: If a quadrilateral of side lengths a, b, c, d can be inscribed in a circle, then its area is given by A = sqrt, where s = (a + b + c + d)/2 In this case, a = 2*radius You know b

*asked by bobpursley on November 13, 2006* -
## Chemistry

The question is: What is the molarity of the copper (II) chloride solution your teacher provided? Show calculations. Obtain the true molarity of the copper (II) chloride solution and calculate percent error. I have done this so far trying to answer the

*asked by Jillian on April 23, 2013* -
## chemistry

I have to prepare a 0.2% water solution of n-propanol and a water solution of methanol and isopropanol at 0.2% that can be in the same container. It didn't specify but I'm pretty sure the solutions are v/v%. For the n-propanol a 0.2% solution should just

*asked by making solutions on February 2, 2014* -
## English

1. Do you do any volunteer work? How about your friends? 2. Yes, I do. They do volunteer work, too. 3. No, I don't. They don't do volunteer work, either. (Are the answers grammatical?) 4. Do you do any volunteer work? 5. Are you doing any volunteer work?

*asked by rfvv on October 27, 2010* -
## Math

How do I solve this equivalent equation? 5x +2 < 17 (again the

*asked by Tyler on April 9, 2008* -
## chemistry

Which solutions are acidic? (Assume all solutions are at 25°C. Kw = 1.0 x 10-14 at 25°C.) A. A solution with [H+] = 9.4 x 10-6 B. A solution with [H+] = 5.5 x 10-10 C. A solution with pH = 6.1 D. A solution with [OH-] = 6.4 x 10-7 E. A solution with

*asked by Ceci on October 8, 2010* -
## Mathmatics

hi I'm confused with this question it says Using a trial and improvement method, slove the following equataions giving your answers to 1 decimal place a) a squared - 28 = 0 b) a squared - 104= 0 c) a cubed - a = 15 how ? start with some estimation 28 is a

*asked by Flamingo on April 14, 2007* -
## Astronomy

I had a test question that I would love a comment on. Planets in a planetary system other than the solar system a) have never been detected b) have been detected c) are an impossibility d) are universally present I have read about "CoRoT-7b", and just

*asked by PJ on July 30, 2010* -
## Math

The price of a video system increased by 15% to $1,127.00. What was the price of the system before the increase? (a)$900.80 (b)$908.00 (c)$809.00 (d)$890.00 (e)$980.00 I need help with this problem and to be leaded towards the direction to find the right

*asked by Mathew on September 18, 2011* -
## business

What is the value to the company and the supplier in developing and implementing a Third Party Supplier Relationship Management (3 P.L. S.M.S.) System? How can such a system provide greater efficiency? In 200-250 words, describe the value to the

*asked by Jared on January 9, 2013* -
## chemistry

CO (g) + Cl2 (g) ↔ COCl2 (g In one experiment, 0.93 bar of CO was combined with 1.01 bars of Cl¬2 in a reaction vessel at 700K. After the system reached equilibrium, the total pressure was 1.24 bars. Calculate Kp0 for the system.

*asked by jason on November 17, 2010* -
## chemistry

CO (g) + Cl2 (g) ↔ COCl2 (g In one experiment, 0.93 bar of CO was combined with 1.01 bars of Cl¬2 in a reaction vessel at 700K. After the system reached equilibrium, the total pressure was 1.24 bars. Calculate Kp0 for the system.

*asked by Dirk on November 17, 2010* -
## History

Revenue for transportation was to come from these under Henry Clay's American System Very good detailed answer at this site: http://www.answers.com/topic/american-system-economic-plan

*asked by Amanda on November 3, 2006* -
## Physics

Please someone help me out I'm so confused! A system consists of 2.0mol of an ideal monatomic gas at 375 K . How much heat must be added to the system to double its internal energy (a)at constant pressure or (b)at constant volume.

*asked by Franky on December 10, 2009* -
## physics

You drop 454 g of solid ice at −35°C into a bucket of water (1,200 g) at 45°C. Eventually, the ice all melts, and the entire system comes into thermal equilibrium. Find the final temperature of the system.

*asked by chase on January 25, 2016* -
## Physics

You drop 378 g of solid ice at −35°C into a bucket of water (1,200 g) at 45°C. Eventually, the ice all melts, and the entire system comes into thermal equilibrium. Find the final temperature of the system.

*asked by Sierra on July 31, 2012* -
## 6th grade SCIENCE

I am doing a project on echinoderm and one of the questions is asking about if they have a circulatory system. I have found information that they have a poorly defined opened circulatory system. I also need to answer the difference between if it's closed

*asked by peyton on November 19, 2010* -
## science

How can a machine make work easier for you? A. by decreasing the amount of work you do on an object B. by changing the direction of your applied force C. by increasing the work done by the machine D. none of the above**

*asked by @realBlueface on February 28, 2019* -
## Basic algebra

Bill drives his car 10 mph faster on the way home from work than he does going to work in rush hour. If it takes him 1 hrs. going and half an hour returning, how far away is his work?

*asked by Mike on March 4, 2014* -
## Algebra

Bill drives his car 10 mph faster on the way home from work than he does going to work in rush hour. If it takes him 1 hrs. going and half an hour returning, how far away is his work?

*asked by June on March 4, 2014* -
## Physics

A pendulum of length L=26.0 cm and mass m= 168 g is released from rest when the cord makes an angle of 65.2 degrees with the vertical. A) how far (m) does the mass fall before reaching its lowest point? My work: .26m - .109 = .151 m B) how much work (J) is

*asked by Casey on May 26, 2011* -
## art

1. How did francisco goya caricature to depict the figures in contempuous of the insults? If you look up contempuous of the insults francisco de goya on google its the first pic under images. a. the facial features of the frenchmen are exaggerated to show

*asked by i am awesome on January 22, 2015* -
## physics

The Hyperloop is a hypothetical new fast transport system between cities, which works by launching pods that carry people through a very low air pressure tunnel. The Hyperloop reduces friction between the pods and the tunnel by supporting the pod on a

*asked by dan on August 22, 2013* -
## math 12

i got the wrong answer from the back, and i know that imnot dooing it right. please try to help me on this hard question. THE ANSWER WAS:16 solve the equation: 3log(x-15)= (1/4)^x i don't know how to solve it algerbrically. the teacher doesn't want us to

*asked by kajal on June 2, 2011* -
## Algebra: Steve

I already asked this question,I just wanted to clarify the answer. Problem: The polynomial f(x) has degree 3. If f(-1)=15, f(0)=0, f(1)=-5, f(2)=12, then what are the x-intercepts of the graph of f? Steve: clearly, f(0) = 0 so, f(x) = ax^3+bx^2+cx =

*asked by Trish Goal on November 15, 2014* -
## Chemistry

The following two solutions were combined and mixed well: 150.00 mL of a 3.500 M iron(¡¡¡) nitrate solution and 760.00mL of a 1.600M magnesium nitrate solution. 20.00mL of the final solution was transferred with a pipette into an empty 250.00mL

*asked by Mantsha on April 29, 2014* -
## Chemìstry

The following two solutions were combined and mixed well: 150.00 mL of a 3.500 M iron(¡¡¡) nitrate solution and 760.00mL of a 1.600M magnesium nitrate solution. 20.00mL of the final solution was transferred with a pipette into an empty 250.00mL

*asked by Anonymous on April 29, 2014* -
## Physics Help Please

Scientists at Oak Ridge National Laboratory confirmed the existence of element 104 by creating 3000 atoms of it. If radioactive decay caused the number of atoms to drop by half within 4.0 s, how many atoms were left after 12 s? Show work please! Thank you!

*asked by Kim on May 2, 2015* -
## math ,hep, plz

can someone help explain this for me please... Problem #1 What values for x must be excluded in the following fraction? (x+5)/(-1) Problem #2 what values for x must be excluded in the following fraction? (x-3)/((4x-5)(x+10)) When working with fractions,

*asked by jasort20 on March 18, 2007* -
## hello reiny damon steve can you help me physics

Find the Gravitational potential at a point on the earth's surface. Take mass of earth as 5.98*10^24kg, it's radius as 6.38*10^6m and G=6.67*10^-11Nm^2kg^-2. Plz i need sir damon and steve including reiny to show me step and solution plz

*asked by danu on May 8, 2017* -
## Chem

An e−1 is released by an electron microscope at 3.00 × 106 m/s. Determine in meters using the de Broglie relation Substitute kgˑm2/s2 for J and show all units. Then, convert to pm and show the conversion factor. Determine the kinetic energy

*asked by Feather on November 1, 2014* -
## chemistry

If a saline solution has a concentration of 0.25 g per mL, calculate the following. a) The concentration of this solution in %w/v. b) The concentration of this solution in grams per litre (g/L). c) The concentration of this solution in milligrams per mL

*asked by Hannah on November 7, 2012* -
## Chemistry

A solution of magnesium chloride, MgCl2, is prepared by dissolving 19.0g of MgCl2 in 250 mL OF water. a.) Calculate the weight percent of magnesium chloride in solution. b.)The denstiy of the above solution is 1.05 g/mL. Calculate the molarity of the

*asked by Josh on October 24, 2012* -
## Medical Transcriptionist

I need help with this scenario please!Ten years ago, you started working as a clerk for DMD Medical Supplies. Six months ago, Liz Jakowski, the human resources director, promoted you to office manager. You manage two employees: Jack Snyder and Ruth

*asked by Kay on May 24, 2010* -
## chemistry

a particle element has 2 isotopes in natural occuring mixture 47.8%of mixture is isotope weighing 150.9196 amu. The other weighs 152.9209amu. Calculate the atomic mass for this element show work

*asked by elanda on March 15, 2012* -
## Pre-Calculus

Jake serves a volleyball with an initial velocity of 32 feet per second from 4.5 feet above the ground at an angle 0f 35 degrees. a) Write parametric equations to model the situation. b) How far will the ball travel( if it hits the ground)show work

*asked by Alexis on February 28, 2014* -
## Physics

A bird flies from the South Pole to the North Pole. Part of the journey is 1000 miles that takes 2 weeks. What is the bird’s velocity in that time? Show work for credit and include final units.

*asked by Anonymous on February 6, 2017* -
## Math Help!

Mrs. Miller sells a house for $179,000. If she earns a commission of 6%, how much money does she earn? Write a porportion and show your work. My answer 179,000/100=x/6 107400=100x 10,740=x Am I right? Thank you

*asked by Callie on November 24, 2014* -
## 6th Grade Math

Can someone please show me how to work this problem below? Jacob earned $80 babysitting and deposited the money into his savings account. The next week he sepnt $85 on video games. Use the integers to describe the weekly changes in Jacob's saving account

*asked by Tim on September 2, 2014* -
## Math

FIve players played a scored board game. If the average ( arithmetic mean) of the scores of the five players was 21, and if each person had a positive integer score, what is the greatest score any one player could have obtained? a) 33 b) 50 c) 75 d) 94 e)

*asked by Sarah on August 15, 2012* -
## Physics

1. If a 30kg object experiences a normal force of 210N when traveling down a ramp, what is the angle of incline? Also, calculate the force of friction and the coefficient of friction. Answers: μ(mu)=0.98 Θ=44.5 degrees But please show work and all

*asked by Tina on June 22, 2011* -
## 5th grade math

Applying concept :calculate As of July 2004, the population of the United States was 293,027,571.if more than half of these people live within 80 kilometers of an ocean, about how many people live within that distance? Show your work.

*asked by Anonymous on April 13, 2015* -
## Physics

A stuntman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0 m/s, and the man is initially 2.75 m above the level of the saddle. Please Show work!! I am completely lost!

*asked by Haroula on February 7, 2012* -
## college algebra

1. for the given slope-inntercept equation of the line with the following properties parallel to the line y=7; containing the (-3,5) 2. write the equation of the circle in standard form. find the center, radius, intercepts. x^2+y^2+16x-18y+145=25 please

*asked by confused-steve please on December 3, 2012* -
## chemistry

2C2H6+702=4CO2+6H20 how many grams of oxygen are required to completely burn60.0g ethane (C2H6) show work Using the above equation how many Lof 02 are required to burn 20.0Lof ethane thank u soo much this is for a test

*asked by megan on May 1, 2012* -
## Physics

The driver of a car is going 90 km/hr suddenly sees a barrier40m ahead. It takes the driver .75 sec to apply the brakes, and the average acceleration during braking is -10m/s^2. Will the car hit the barrier and use calculation to show work.

*asked by Bill on October 31, 2015* -
## chemistry

2. If the accepted enthalpy change value for the dissolving of sodium hydroxide in water is −44.2 kilojoules per mole, determine the percent error of the experimental value that you calculated in Part I. Show your work. (experimental - actual value) /

*asked by yuppp on July 18, 2013* -
## Chem-Ionic & Net equations

When the following solutions are mixed together, FeSO4 (aq) + Csl (aq): What is the balanced equation? What is the complete ionic equation? What is the net ionic equation? I don't know how to balance these problems, can someone please show me how to solve

*asked by ASA on April 13, 2012* -
## Chemistry

A solution of 220mL of 0.200M Koh is mixed with a solution of 120mL of 0.240M NiSO4. 1.Determine limiting reactant? 2.Calculate the mass of precipitate formed? 3.Calculate the molarity of all ions left in the solution?

*asked by anonymous on October 9, 2011* -
## Physics

A biotech company produces a solution with an active biomass of 8.7604x10^6 cells per litre of solution. The solution is shipped by tanker truck with a volume of 4.16462x10^1 m3. How many cells are being sent per shipment, expressed to three significant

*asked by stacy on October 3, 2010* -
## Chemistry--PLEASE HELP

A solution of 220mL of 0.200M Koh is mixed with a solution of 120mL of 0.240M NiSO4. 1.Determine limiting reactant? 2.Calculate the mass of precipitate formed? 3.Calculate the molarity of all ions left in the solution?

*asked by anonymous on October 9, 2011* -
## Chemistry

What mass of solid sodium acetate, NaCH3COO, must be added to 2.50 L of an aqueous solution of 0.55 M acetic acid, CH3COOH, in order to make a buffer solution whose pH is 4.50? Assume that adding the solid does not change the volume of the solution.

*asked by Dee on December 15, 2012* -
## Chemistry

Question: A 0.400 g sample of propionic acid was dissolved in water to give 50.00 mL of solution. This solution was titrated with 0.150 M NaOH. what was the pH of the solution when the equivalence point was reached? I'm not really sure how i would go about

*asked by Eliz on April 15, 2009* -
## chemistry

A solution of 220mL of 0.200M Koh is mixed with a solution of 120mL of 0.240M NiSO4. 1.Determine limiting reactant? 2.Calculate the mass of precipitate formed? 3.Calculate the molarity of all ions left in the solution?

*asked by anonymous on October 9, 2011* -
## Chemistry

A chemist has 250.0 mL of a bright blue (caused by Cu+2) aqueous solution that contains 21.16 g of CuCl2. He adds 12.0 g of finely ground silver to the blue solution and lets the solution sit covered overnight. When he returns he finds:

*asked by Anonymous on October 10, 2011* -
## chemistry

calculate final volume required to reach 1% solution when 0.2g of sample is predigested with nitric acid 3mL then after 1day, if 1ml sample from this solution is digested in 10ml solution and diluted in 50 mL distilled water.

*asked by tomas on March 20, 2011* -
## chemistry

Assume that 50ml of 0.01M edta solution were added to 25ml of co solution and the excess edta required 20ml of 0.005M mg solution. Calculate ppm co+ present. The answer 942ppm Bob helps me

*asked by Fai on March 2, 2013* -
## Chemistry

A solution is made by dissolving 32g KCIO3 in 100g H20 at 80C. The solution is cooled to 10C. Describe what you would observe as it cooled and state what temperature this first occurs at. What mass of crystals would settle out of the solution?

*asked by Naomi on June 18, 2016* -
## Pre algebra

A number multiplied by itself and then by itself again gives -1,000. What is the number? Please show the solution step by step

*asked by Jude on September 24, 2013* -
## algebra

1)Solve by factoring:5x^2=4-19x answer=-4,1/5 2)Which quadratic equation has roots 7 and -2/3? answer=A A.2x^2-11x-21=0 B.3x^2-19x-14=0 C.3x^2+23x+14=0 D.2x^2+11x-21=0 3)To solve 4x^2-28x+49=25 by using the square root property,you would first rewrite the

*asked by Marissa on August 14, 2007* -
## astronomy

If you drop a feather and a steel hammer at the same moment, they should hit the ground at the same instant. Why doesn’t this work on Earth, and why does it work on the Moon? Will it work on Phobos, a moon of Mars?

*asked by nilmar on September 17, 2015* -
## math

How would I use separation of variables to solve the initial value problem? dy/dx = (y +5)(x+2) I multiply both sides by dx so: dy= (y+5)(x+2)dx Then I get variables on the same sides:: dy/(y+5)= (x+2)dx Then I have to take integrals of both sides but this

*asked by Anonymous on February 25, 2010* -
## Math

In rectangle MNPQ, the ratio of the length of MP is 4:5. a) Does this ratio tell you how long MN is? Explain. b) What if MN is 12cm long. How long is MP? Use a diagram to illustrate your answer. Show your work.

*asked by Karen on September 28, 2008* -
## math

A car license plate consists of 6 characters. The first 3 characters are letters excluding I, O, Q and U. The last 3 characters are any of the numerals 0 to 9 inclusive. How many different license plates are possible? Please show your work.

*asked by corey on May 23, 2011* -
## calculus

use rational zeros theorem to find all the real zeros of the polynomial function. Use the zeros to factor f over the real numbers. f(x)=x^3-8x^2-31x-22 **please show work**

*asked by Caylan on December 22, 2012* -
## math

Jack practices his trunmpet every 3 days. he goes for a run every four days. if he did both today in how many more days will he practice his trumpet and go for a run on the same day. show your work and explain.

*asked by Jada on October 10, 2016* -
## Math for 7th graders///////

In a survey 182 people said they liked chocolate ice cream the best. This is 35% of all the people surveyed. How many people were surveyed??? Please tell me the answer and please show your work so I could understand how you figured it out!???

*asked by Kim on June 25, 2014* -
## math

A square storage area measures 10 m on a side. By how much must each side be shortened to decrease this area to less than half the original area? (3 marks - show your work)

*asked by Alex on January 22, 2015* -
## math

A square storage area measures 10 m on a side. By how much must each side be shortened to decrease this area to less than half the original area? (3 marks - show your work)

*asked by Alex on January 26, 2015* -
## math

A car license plate consists of 6 characters. The first 2 characters are any letter. The last 4 characters are odd numbers from 1 to 9 inclusive. How many different license plates are possible? Please show your work.

*asked by corey on May 23, 2011* -
## math

a baseball team buys 15 bats for $405. aluminum bats cost $25 and wooden bats cost $30. how many of each type did they buy? Please show work

*asked by dave on November 6, 2010* -
## Chemistry

Calculate the energy associated with the photon that would be released when an H electron falls fro the n=3 energy level to the n=1 energy level. show work if possible so I can understand how to do it. Thanks in advance!!!

*asked by devon on March 31, 2014* -
## Calculus

Find a power series, centered @ x=0, for function f(x)=x/(1+2x). I know this is a maclaurin series, but my work doesn't get the right answer. Can you please show steps? Also,do all power series start with a 1, as in (1+2x+4x^2+...)? Thanks in advance!

*asked by W on March 8, 2012* -
## Calculus

Find a power series, centered @ x=0, for function f(x)=x/(1+2x). I know this is a maclaurin series, but my work doesn't get the right answer. Can you please show steps? Also,do all power series start with a 1, as in (1+2x+4x^2+...)? Thanks in advance!

*asked by W on March 8, 2012* -
## Chemistry

N2+O2 2NO Equillibrium Concentrations of the gases at 1500K are 1.7x10(-3) mol/L for o2 and 6.4x10(-3) mol/L for N2 and 1.1x10(-5)mol/L for NO. CAlculate the value of Kc at 1500K for these data? Show work please

*asked by Jackie on April 27, 2011* -
## statistics

Assuming that the weights of newborn babies are normally distributed with mean 6.5 pounds and standard deviation 1.2 pounds, how many babies in a group of 80 do we expect to weigh more than 8.9 pounds? Please show work Thank you

*asked by Harley on June 28, 2011* -
## physics

1. a force of 30n with a direction of 35 degrees northwest acts on point p. Find: a) the northward component on the force b) the westward component of the force Please show work. Thanks!

*asked by Molly on June 21, 2011* -
## physics

100 kg car moving at 22 m/s runs into a horizontal spring with spring constant 4200 N/m. How far does the car displace the spring before coming to a stop? Please show your work.

*asked by Brandi on September 19, 2015* -
## physics

A 400g glider moving to the right at 2 m/s collides elastically with a 500g glider moving in the opposite direction at 3 m/s. find the velocity of each glider? please show work so i can understand it! thanks

*asked by mary ann on December 15, 2009* -
## math

Circle the prime numbers in the following set of numbers. Show your work. 953, 1,427, 2,971 I can tell whether each number is prime but I am having a hard time with individual numbers

*asked by Matthew on April 29, 2017* -
## Math

Golds gym charges $150 to sign up and $10 per month. Fitness express charges not initial fee but charges $25 per month. When will the cost be the same? Show work please!!

*asked by Michelle on October 27, 2015* -
## boitumelong

Eddie took 3over5 hours to finish a work but john finished the same work in 7over9hours who finished the work in less time .give reasons

*asked by sphe on August 19, 2015* -
## Math

The amount allowed in weight per bus is 221 pounds. My friend weighs 60 pounds. For us to ride in a car together how much can you weigh? I wrote this solution. If it is right? if not could you show me the steps? x + 60 < = 161; at most 221 pounds. Is this

*asked by Missy on May 16, 2013*

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