# 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 638-
## physics

a bullet of mass 10.0g sprites a wall with a velocity of 500m/s ,determine the work done by the wall on the bullet which penetrate 0.10m .

*asked by Nwuguru philip n on February 1, 2019* -
## science

A cable lifts a 1050-kg elevator at a constant velocity for a distance of 34.1 m. What is the work done by (a) the tension in the cable and (b) the elevator's weight?

*asked by Anonymous on December 10, 2012* -
## Int Algebra

The difference of two numbers is 7. The sum of the numbers is -1. What are the numbers? I've come up with two equations: x-y=7 and x+y=-1 but don't know what to figure it out from there since there are no numbers on the left side of the equation to work

*asked by Rose Mata on January 26, 2007* -
## math, medical

A medication is available in 30mg. tablets. A patient is given a prescription for gr. ii. How many tablets should the patient take? I am not sure how to work this problem out, and i am confused on the gr. ii. part, i do not know what it means, please help.

*asked by Angel on September 4, 2012* -
## Machines and humans?

What are some conflicts between humans and machines that have arisen in the past? So I already said that machines can put humans out of work- but any other ideas? any sites I could read up on something like this?

*asked by Shalee ^~^ on October 16, 2015* -
## physics

A force F = (4.18xi + 3.18yj) N acts on an object as it moves in the x direction from the origin to x = 4.34 m. Calculate the work done on the object by the force.

*asked by Anonymous on October 31, 2009* -
## calculus/physics

A force of 10 pounds stretches a spring 2 inches. Find the work done in stretching this spring 3 inches beyond its natural length

*asked by deb on March 11, 2010* -
## ethics question

i don't work, how should answer this: What field are you in? Are there specific laws and standards associated with this industry? Why are they in place? Are these laws and standards consistently followed?

*asked by Anonymous on November 8, 2010* -
## Physical Chemistry

1.6 mol of Neon gas are heated from 20.0 °C to 85.2 °C at a constant pressure of 1 atm. Calculate the work done. (R = 0.082057 L.atm/ K. mol)

*asked by Alfred on August 8, 2011* -
## Physics

Does the solar powered calculator work when there is no bright light falling on the solar panel? Explain. I think it does but I don't know why please help explain this. Thank you

*asked by Cherie on March 10, 2014* -
## physics

2 moles of an ideal gas at 20k changes from a pressure of 15 atm to 3 atm at constant temperature. Calculate the work done by the gas.

*asked by frank fred on March 21, 2012* -
## Physics

Light photons with energy 7.3 eV strike a metal surface and eject electrons with energy 2.7 eV. What is the Work Function of the metal?

*asked by Anonymous on January 18, 2018* -
## PHYSICS

Calculate the work done against external atmospheric pressure when 1 g of water changes to 1672cm3 of steam. Take the atmospheric pressure as 1.013×105Nm−2

*asked by MONSOFT on April 8, 2015* -
## Physics

Catching a wave, a 77-kg surfer starts with a speed of 1.2 m/s, drops through a height of 1.60 m, and ends with a speed of 8.5 m/s. How much nonconservative work was done on the surfer?

*asked by Amanda on November 10, 2015* -
## Exploring Space

rocket engines which work in space still need oxygen 4 the fuel to bur. space is a vacuum. where does the oxygen come from? I'm stumped on this, can someone please lend me help, thanks

*asked by Sara on March 15, 2010* -
## Science

A 9.8basketball player runs at a speed of 7m/s A.what is kinetic energy B.how much work was done by player to reach his speed starting from rest

*asked by Christian on February 24, 2018* -
## poem

i read this book named abduction and my home work is to write a poem about it but the problem is i don't know how to write poem ?

*asked by ross on April 10, 2011* -
## Math

how do I work this problem step by step? 3yd5ft + 6yd2ft This is how I worked the problem 3 yd 5ft +6 yd 2ft 9yd 7ft

*asked by barbara on July 7, 2013* -
## math

find the vertex,focus and equation of the direction of y=-1/16(x-6)^2+3 Y=1/2p(x-h)^2+k p=8 h=6 k=3 so I now got (6,3) when doing it over again. I now got so vertex is (6,3), focus is (6,7) and directrix = y=-1 Is these corrections now right? Thank you for

*asked by sara on October 21, 2018* -
## physics

A plane which weighs 1122 kg goes from a speed of 145.5 m/sec and height of 1133 m to a speed of 82 m/sec and 592 m. What is work?

*asked by john on September 22, 2010* -
## cal

The force on an object is F=−20j. For the vector v=−5i−4j, find: (a) The component of F parallel to v: (b) The component of F perpendicular to v: The work, W, done by force F through displacement v:

*asked by Anonymous on September 17, 2011* -
## science

what is the Half-life of strontium 90. Explain your work. Okay well I already know the answer is 28yrs but I just don't know how to explain it on how I got the answer... can you guys help me please! I need this done in 30 seconds..

*asked by Channy-Boo on January 8, 2015* -
## physics

A person puts a suitcase of mass 10.9 kg into a van, moving the suitcase a total distance of 0.90 m: 0.60 m up and 0.30 m horizontally. How much work is done by the person?

*asked by Anonymous on November 19, 2013* -
## Calculus

It took 1800 J of work to stretch a spring from its natural length of 2m to a length of 5m. Find the spring's force constant. Please help. Thanks in advance.

*asked by JEUCD 37 on March 8, 2012* -
## math

J and P are partners. J does four times the work of P, and also takes four times the profits. If total profits for the month of June is $8,000, what is J's share?

*asked by Rhonda on January 20, 2014* -
## Please help trig proof

((cotx+cscx)/(sinx+tanx))=cotxcscx Please prove left side equal to right side, only doing doing work on the left.

*asked by Potterhead on December 16, 2013* -
## physics

Catching a wave, a 77-kg surfer starts with a speed of 1.1 m/s, drops through a height of 1.60 m, and ends with a speed of 8.5 m/s. How much nonconservative work was done on the surfer?

*asked by John on March 22, 2011* -
## physics PLEASE HELP!

The coefficient of kinetic friction between a suitcase and the floor is 0.26. If the suitcase has a mass of 70.0 {kg}, how far can it be pushed across the level floor with 680 {J} of work?

*asked by susan on February 27, 2011* -
## Physics

Catching a wave, a 77-kg surfer starts with a speed of 1.2 m/s , drops through a height of 1.60 m , and ends with a speed of 8.5 m/s . How much nonconservative work was done on the surfer?

*asked by Ashlee on November 10, 2015* -
## physics

A catcher "gives" with a baseball when catching it. If the baseball exerts a force of 463 N on the glove, so that the glove is displaced 11.0 cm, how much work is done by the ball?

*asked by Jaron on January 9, 2012* -
## english grammar

She’s liked him since six months. When you start work? I’ve been knowing her for three months i)What the mistake is. ii) Why you think it has been made. iii) How you would explain and correct the mistake with a student.

*asked by rahila on December 2, 2010* -
## PLEASE HELP!!!!

((cotx+cscx)/(sinx+tanx))=cotxcscx Please prove left side equal to right side, only doing doing work on the left.

*asked by nina on December 16, 2013* -
## calculus(work)

a rectangular water tank has a length 20 ft, width 10 ft , and depth 15 ft . if the tank is full , how much work does it take to pump all the water out (using calculus)?

*asked by tony on April 2, 2011* -
## Science

How much work is done lifting a 100 N block of ice up to a shelf 3m off the ground? What if you use a ramp? How heavy is the block of ice in pounds?

*asked by Nicole on September 8, 2012* -
## Algebra math1

Find the formula 42 reversed is 24 2+4 = 6. The difference between 42 & 24 is 18, 2 + 4 = 6. 18 x 2 = 36, 36 + 6 = 42, 18 + 6 = 24. I need to find a formula that would've found the answers 6 & 18 before I knew they were the answer, but could also work for

*asked by Shanu on January 25, 2015* -
## math

Given p is false, q is true, and r is false, find the truth value of the statementShow step by step work. Use keyboard shortcuts of --àfor →, < --- > for→, ↔, v for V, and˄For ˄.

*asked by kim on January 9, 2012* -
## physics

a fisherman reels in 12.0 m of line while landing a fish, using a constant forward pull of 25.0 N. How much work does the tension in the line do on the fish?

*asked by steve on October 25, 2009* -
## English

This was a question asked in our last test Either of her eyes --------- not work well. (Do, does, is) I answered 'do' but some of my friends say 'does' is the correct answer. Now I am really confused. Please someone help. What's the correct answer???

*asked by A GOODSTUDENT on September 10, 2016* -
## World History

What was Operation Rolling Thunder? the title of entertainer Bob Hope’s 1968 Christmas show that he performed for the troops the code name for the official evacuation of the American embassy in Saigon a massive, three-year bombing campaign by the United

*asked by Jaiden on April 1, 2019* -
## Physics

A crane with a movable pulley system on a horizontal arm is moving a large container. The 355 kg container is hanging from a cable that is 6.15 m out on the 7.50 m arm. The arm has a mass of 345 kg. A cable that is attached to its end makes and angle 32.0

*asked by Bella on April 7, 2013* -
## ap physics b

A uniform ladder 8.09 m long and weighing 201.0 N rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.600, and the ladder makes a 46.0 angle with the ground. How far up the ladder can an 834.0N person

*asked by helpplz on November 17, 2012* -
## ineedhomeworktips

i always have late work i was almost held back last year cause of it i need tips on homework! Tips on studying, including homework. Read the chapter in the book BEFORE class. Take notes in class. After class, read the book again and add to your notes to

*asked by nikki on July 23, 2006* -
## Chemistry

A 230-gram sample of metal at 82 degrees centigrade is added to 632 grams of water at 14.4 degrees centigrade in an ideal calorimeter. The final temperature of the system (water and metal) is 22.8 degrees centigrade. What is the heat acapacity of the

*asked by Trevor on October 26, 2008* -
## History

Which identifies the impact that Napoleon had on history? A.Napoleon’s withdrawal of civil liberties led to laws that promoted minorities’ rights for citizens throughout Europe. B.Napoleon’s expanded empire led to the adoption of the French language

*asked by Bri on January 17, 2018* -
## paragraphs

Sorry Sorry Second Paragraph This is about my cousin that is looking for a job and her previous jobs were cashier and sale clerk. I know she is a perfect match for the job that is opening where i work for a boss's assistant and i have to persuade my

*asked by lynn on July 15, 2009* -
## Chemistry 12

Hello fellow comrades, I was assigned the sulphur clock reaction lab and I'm a tad bit confused by it. Anyway, here's the lab procedure: 1. take 5 test tubes, labeled a,b,c,d and e. accurately measure out 10.0 ml of .20M sodium thiosulphate in test tube A

*asked by TaeYeon on October 6, 2010* -
## math30

A security code used to consist of two odd digits, followed by four even digits. To allow more codes to be generated, a new system uses two even digits, followed by any three digits. If repeated digits are allowed, the increase in the number of possible

*asked by alejandro on August 5, 2013* -
## Mathematics

Of the 82 pupils in grade 9, 73 take mathematics 56 take science, all those who take science take mathematics. Show the information on the venn diagram. How many take neither mathematics nor science?

*asked by Philip Chiwala on January 29, 2017* -
## algebra

Jess ate 1/4 of a pizza.Jack ate 1/3 of the same pizza.Dennis ate 1/2 of the same pizza.Explain and show with math if this is possible?

*asked by Esau on December 11, 2015* -
## design

1. A person with a square face shape and a rectangle body shape has what bodyline? A. Straight B. Sharp-straight.(yes) C. Soft-straight D. Soft-straight II 2. A suit with rounded lapels and a shawl collar would work best for a woman with a _______

*asked by need to check my answers on July 27, 2012* -
## History

Assignment: Write an essay about all of the information of Watergate. Write it in from the point of view of a reporter trying to solve the mystery (break the story) and reporting the story after the fact. Your essay should be at least 200 words. Be

*asked by anonymous on November 6, 2011* -
## Math

Does the function represent exponential growth or exponential decay. Identify the growth or decay factor. y=9 x (1/2) I'm not sure how to make the chart to show the decay.

*asked by Sam on February 6, 2017* -
## Vectors

Use a specific example to prove that the cross product is also not associative. That is, use three specific vectors in 3-sapce to show that Vector a×(Vector b × Vector c) is not equal to (Vector a × Vector b) × Vector c.

*asked by Adiana on February 23, 2015* -
## number theory

How do you prove that any palindrome, a number that reads the same backwards and forwards, with an even number of digits is divisible by 11? I know how to show a number is divisible by 11, but how do you prove the above case?

*asked by Laura on April 19, 2009* -
## Calculus

Show that a right-circular cylinder of greatest volume that can be inscribed in a right-circular cone that has a volume that is 4/9 the volume of the cone. Please, help out, this is for a study guide for a quiz. :) Thank you.

*asked by Amy on January 12, 2012* -
## math

questions involving domain and range... 1. Find the domain of the function f(x)=(3x+1)/(sqrt of (x^2+x-2)) andd. 2. Let f(x)= (absvalue(x))/x. Show that f(x)={ 1, x > 0 {-1, x < 0 Find the domain and range of f(x).

*asked by alk on August 4, 2008* -
## physical science

An 8-kg ball rolling at 2m/s bumps into a pillow and stops in 0.5s (a) Show that the force exerted by the pillow is 32N. (b) How much force does the ball exert on the pillow?

*asked by Shevon on November 19, 2008* -
## Chemistry

Please show step by step with answer The equilibrium constant, Kc, for the equilibrium N2O4 (g) 2NO2(g) is 4.6 x 10^-3 If the equilibrium mixture contains 4.0×10^-2 M NO2, what is the concentration of N2O4?

*asked by Lynn on May 31, 2010* -
## Physics

I have a 67 as a final grade for the year in my physics class my final exam counts as 10% if I get a 0 and just don't show up to my final will I fail the class for the year?

*asked by Bs on June 14, 2016* -
## Chemistry

which description applies to a system in a sealed flask that is half full of water? (sorry about that) A. only evaporation occurs, but it eventually stops. B. only condensation occurs, but it eventually stops. C. Neither evaporation nor condensation occurs

*asked by Jazmin F. on March 9, 2011* -
## English

1.With a winter storm (blustering bungling) outside what could be more welcome than a warm room, a good meal, and my favorite TV program? blustering? 2.The idea that most people usually behave calm and reasonable way is (refuted numbed) by all the facts of

*asked by Jerald on November 5, 2012* -
## Biochemistry

In the electron transport chain, electrons from FADH2 are eventually used to reduce O2 into H2O. Experimentally, the proton motive force created by this process will generate 2 ATP molecules from ADP and Pi, using ATP synthase. From the information

*asked by Mike on April 10, 2012* -
## PHYSICS

In an old house, the heating system uses radiators, which are hollow metal devices through which hot water or steam circulates. In one room the radiator has a dark color (emissitivity = 0.810). It has a temperature of 65.0 oC. The new owner of the house

*asked by Anonymous on November 17, 2015* -
## Physics

In an old house, the heating system uses radiators, which are hollow metal devices through which hot water or steam circulates. In one room the radiator has a dark color (emissitivity = 0.804). It has a temperature of 65.9 oC. The new owner of the house

*asked by StressedStudent on December 5, 2012* -
## PHYSICS

In an old house, the heating system uses radiators, which are hollow metal devices through which hot water or steam circulates. In one room the radiator has a dark color (emissitivity = 0.810). It has a temperature of 65.0 oC. The new owner of the house

*asked by Anonymous on November 17, 2015* -
## Integrated Physics and Chemistry

Matching... Heat engine Heat pump Boiler Thermostat -a heating appliance that uses heat energy released from fossil fuels to warm water for use in radiant or convection heating systems -a appliacne that controls the maintenance temperature of a heating

*asked by Ashley on April 19, 2011* -
## physics

A gate is free to rotate without friction about its hinges at H. The gate is initially at rest. A 4.00 kg ball of mud is thrown at 18.0 m/s towards the center of the gate and the path of the mud is perpendicular to the plane of the gate. A) Compute the

*asked by Anonymous on April 13, 2013* -
## physics

In an old house, the heating system uses radiators, which are hollow metal devices through which hot water or steam circulates. In one room the radiator has a dark color (emissitivity = 0.818). It has a temperature of 64.8 oC. The new owner of the house

*asked by RM on May 15, 2012* -
## Probability

The public transport system is aware that one person in twenty does not buy a ticket for their trip. The manager decides to challenge 200 travelling people as to charger they have a valid ticket or not. (a) calculate the probabilty that everyone had a

*asked by Anonymous on April 30, 2010* -
## Physics

An engine of the orbital maneuvering system (OMS) on a space shuttle exerts a force of for 3.90 s, exhausting a negligible mass of fuel relative to the 95,000-kg mass of the shuttle. (a) What is the impulse of the force for this 3.90 s? (b) What is the

*asked by Anonymous on June 7, 2014* -
## Probabilty

The public transport system is aware that one person in twenty does not buy a ticket for their trip. The manager decides to challenge 200 travelling people as to charger they have a valid ticket or not. (a) calculate the probabilty that everyone had a

*asked by Anonymous on April 29, 2010* -
## History

During the cold war, people were afraid of communists, both outside and inside the United States. The red scare and mccarthyism that grew out of these fears was damaging to the American way of life. During the mccarthy years, many of the freedoms

*asked by Layne Cronin on March 20, 2014* -
## computer networking

You are targeting a wirless network in your area do condut some unauthorized activities. what type of security standard would be the easiest to access A. Open System Authenication B. WEP C. WPA- PSK D. 802.11x You are accessing a wirless network in your

*asked by fabian wise on June 6, 2012* -
## math

the function rule C = 10n + 26 relates the number of people n who attend a small concert to the cost in dollars C of the concert. Make a table of the input/output pairs to show the cost if 27, 39, and 43 people attend. Please help me i don't know how to do

*asked by Batman on May 9, 2013* -
## Chemistry

The following is a Limiting Reactant problem: Magnesium nitride is formed in the reaction of magnesium metal with nitrogen gas in this reaction: 3 Mg(s) + N2(g) Mg3N2(s) How many grams of product are formed from 2.0 mol of N2 (g) and 8.0 mol of Mg(s)?

*asked by Ciaria on March 3, 2015* -
## Physics

A velociraptor comes at you at 20m/s and it takes you exactly 2.22 seconds to hit the switch for the door which takes 3 seconds to close. How far away must the velociraptor at least be from the door for your survival? (reworded question to make more

*asked by WaywardSon on September 28, 2010* -
## Algebra

Complete these ratio tables for two pant mixture Peacock purple _________________ Red blue 2 5 ___ 15 14 ___ Purple plum __________________ Red blue 7 3 _____ 15 14 ____ Help me????? Show we how to do. Need blanks filled in

*asked by Dylan on May 15, 2018* -
## Geometry- how to write proof

ABC is a right triangle. Angle C is 90 degree. Altitude CD is drawn to hypotenuse AB. Prove AB/BC = BC/BD and AB/AC = AC/AD This is a theorem. How do I prove it? Thanks. Dont you have similar triangles? You can show this by looking at the angles

*asked by Jen on February 23, 2007* -
## Math

Jerome estimate that the total number of people for the past 2 years visiting the aquarium is 900,000. Gina estimated it to be 870,000. Write a number sentence to show how Jerome found his estimate.

*asked by Elecia on February 15, 2009* -
## MATH

JESSI bought two plots of land for a total of 120000 on the first plot she made a profit of 15%. on the second plot she lost 10% .her total profit was 5500, how much did she pay for each piece of land? ( please show the whole procedure of this math even

*asked by NEED HELP NEED HELP !!!!! on October 19, 2013* -
## differential calculus

ADIABATIC EXPANSION when a certain polyatomic gas undergoes adiabatic expansion,its pressure p and volume V satisfy the equation pV^1.3 =k,where k is constant.Find the relationship between the related rates dp/dt and dV/dt. this is a problem of related

*asked by =) on September 16, 2014* -
## Math

Gray bought two plots of land for a total of 120000 on the first plot she made a profit of 15% on the second plot she lost 10% .her total profit 5500, how much did she pay for each piece of land? (Please show the whole procedure of this math with the rough

*asked by Urgent !!! on October 19, 2013* -
## Physic II

A flat disk 1.0 m in diameter is oriented so that the plane of the disk makes an angle of π/6 radians with a uniform electric field. If the field strength is 491.0 N/C, find the electric flux through the surface. Please show step by step

*asked by John on February 2, 2014* -
## chem - check euqation please

suggest a test chemical that can be added to the water sample to precipate the lead (II) ions. Show a chemical equation for the formation of the precipate you have chosen. I chose Hg(N03)2 so Pb2 + Hg(NO3)2 -->Pb(NO3)2 = Hg I know I still have to balance

*asked by Emily B on May 28, 2008* -
## Economics

A music store holds a half-price sale on all CDs. During the sale, people buy more CDs than usual. What does this event show? A. inelasticity of demand B. the substitution effect C. the law of demand D. the income effect

*asked by Zach Ketchup on April 12, 2012* -
## Algebra

As part of their half time show, the members of the band must walk diagonally from one corner of the football field to opposite corner. If the field is 100 yards long and 35 yards wide, how far must the band member's march?

*asked by Tom on May 31, 2018* -
## Physics

A boy throws a ball straight up into the air so that it leaves his hand at 11 m/s. 1) If the ball has mass 0.15 kg and the boy's arm moved through 1.5 m as he threw the ball, then what average force did he exert on the ball? Please show it step by step

*asked by Anonymous on October 3, 2016* -
## math

The function rule C=10n +26 relates the number of people n who attend a small concert to the cost in dollars c of the concert.. Make a table of the input.output pairs to show the cost if 27, 39, and 43 people attend. Help me pleaseee!!!! :(

*asked by Jamanonymous on June 5, 2014* -
## Chemistry

A small pebble is heated and placed in a foam cup calorimeter containing water at 25 °C. The water reaches a maximum temperature of 27 °C. If the pebble released 532.1 J of heat to the water, what mass (in g) of water was in the calorimeter? can you show

*asked by Rachel on May 1, 2014* -
## math

the function rule c=10n +26 relates the number of people n who attend a small concert to the cost in dollars c of the concert. make a table of the input/output pairs to show the cost if 27,39 and 43 people attend. can someone walk me through this please?

*asked by #lifeSucks on April 3, 2019* -
## calculus help please!

Water is poured into a bucket according to the rate F(t)=(t+7)/(t+2) , and at the same time empties out through a hole in the bottom at the rate E(t)=(ln(t+4))/t+2 , with both F(t) and E(t) measured in pints per minute. How much water, to the nearest pint,

*asked by Hannah on April 27, 2017* -
## Chemistry

What effect would be on the normality of unknown acid? Explain why. a) if NaOH solution is pipetted into a conical flask containing some distilled water b) if an air bubble is out from the burette c) if too much acid is ran out during both titrations

*asked by Peter M.Shaker on May 15, 2014* -
## chemistry

For corrosion resistance, a steel bolt is plated with nickel from a solution of nickel(II)sulfate. If 0.250 g of nickel produces a plating of the required thickness and a current of 0.540 A is used, predict how long in minutes the process will take

*asked by Alex on April 20, 2008* -
## math

You have a 1200 foot roll of fencing and a large field. You want to make two smaller fields by splitting a rectangular enclosure in half.. 1. Use an algebraic solution to find the dimensions of the largest such enclosure. How big will the enclosure be?

*asked by jill on April 3, 2011* -
## PHYSICS

Interactive Solution 12.29 presents a model for solving problems of this type. A thin spherical shell of silver has an inner radius of 5.64 x 10-2 m when the temperature is 24.1 °C. The shell is heated to 133 °C. Find the change in the interior volume of

*asked by Anonymous on November 17, 2015* -
## Calculus and Vectors

There is a wind blowing from N80oE at 45 km/h. The airspeed of the plane will be 550 km/h. (a) What direction should the pilot steer the plane (to whole degree)? Include a diagram as part of your solution. (b) What will the actual ground speed be of the

*asked by Anon on October 3, 2018* -
## college chemistry-thermochemistry

A 1.50g sample of NH4NO3(s) is added to 35.0g of water in a foam cup and stirred intil it dissolves. The temperature of the solution drops from 22.7 to 19.4 degrees celcius. What is the heat of dissolution of NH4NO3, expressed in kJ/mol NH4NO3?

*asked by maryanne on November 8, 2008* -
## history

president roosevelt implemented a set of programs called the new deal. identify the problem that the new deal was designed to deal with. list other possible solutions and their advantages and disadvantages. then write a short evaluation of the chosen

*asked by hhh on May 27, 2016* -
## Chemistry

Caluculate the mass of ferrous ammonium sulfate (Fe(NH4)2(SO4)2.6H2O) you would need to add to a 4.0 mL volumetric flask to make a solution that is 75 ppm. I've already identified that Fe is 14.24% of the Mohr's salt, but how would the conversion of that

*asked by Ronnie on October 1, 2015* -
## calculus

Find the cubic function f(x)=ax^3+bx^2+cx+d that has a local max value of 3 at -2 and a local min values of 0 at 1. I have no idea how to solve this. Could you please give step by step answers and explanations for the steps. Thanks!

*asked by Riley on April 7, 2009*

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