# 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 213-
## Chemistry

When treating a patients physicians use an isotonic means that this solution will have the same osmotic pressure as the body fluid such as blood. how many grams of glucose (C6H12O6) is in 100.0 g of H2O in the isotonic glucose solution (5.00% m/m)?

*asked by Tina on December 10, 2014* -
## Chem

15 cubic centimeter of (CH3COOH) was dissolved in water to make 500 cubic centimeter of solution. calculate the concentration of the solution in moles per litre (C=12 H=1 O=16 density of ethanoic acid =1.05g/cm^3)

*asked by The Okome on February 28, 2019* -
## chem

The solution of known concentration to use to evaluate Z was prepared as follows: 2.00mL of 0.00201 M KSCN and 18.0 ml 0.200 M Fe (NO3)3. Assume that all of the SCN- has been converted to Fe(SCN)2t in this solution. Fe3+ SCN- ==== Fe Fe(SCN)2+ I don't

*asked by Steph on March 1, 2015* -
## chemistry

How would I calculate the molarity of the resulting solution if 25.0mL of 1.50 M HCL solution is diluted to 500 mL. I know you have to change the milliliters to liters by dividing by 1000 and I know that M= Moles of Solute/Liters of Solute but after that

*asked by Daniel on July 1, 2011* -
## CHM 300

Experiment: Redox titration;determination of ascorbic acid by an iodometric back-titration Why is sodium carbonate added to the thiosulfate solution ? why is the water used for preparing the thiosulfate solution boiled ?

*asked by Jennifer on September 26, 2014* -
## Chemistry

Select the statements that correctly describe buffers.? 1) The pH of a buffer solution does not change significantly when any amount of a strong acid is added. 2) The Ka of a buffer does not change when any amount of an acid is added to the buffer

*asked by Aria on September 23, 2013* -
## analytical

Problem 1: Consider a particle whose motion is described with the position vector: r (t) = ˆi2c cos𝞈t + ˆjc sin𝞈t, Where c and 𝞈 are constants. (a) Show that the path of the particle is an ellipse satisfying. x2/a2 +y2/b2 = 1, Where x and y are

*asked by ali on January 22, 2015* -
## home work

Problem 1: Consider a particle whose motion is described with the position vector: r (t) = ˆi2c cos𝞈t + ˆjc sin𝞈t, Where c and 𝞈 are constants. (a) Show that the path of the particle is an ellipse satisfying. x2/a2 +y2/b2 = 1, Where x and y are

*asked by ali on January 22, 2015* -
## Statistics (Multinomial)

For the multinomial distribution: Show that summation of the probability mass function across all possible values equals 1. Show via summation of the probability mass function that the expected value of Y_i = n * p_i The textbook that I'm using left the

*asked by Sean on October 5, 2009* -
## Mathematics/pre-algerbra

how do I find a value of x that will make each proportion true?? 12 = x ___ ___ 16 20 and 8 = 14 __ ___ 12 x See previous post. i still don't get it sorry Cross multiply to find x. Here's the first one; perhaps you can try the second one on your own. 12/16

*asked by Joe on April 9, 2007* -
## Trigonometry

4. Find the exact value for sin(x+y) if sinx=-4/5 and cos y = 15/17. Angles x and y are in the fourth quadrant. 5. Find the exact value for cos 165degrees using the half-angle identity. 1. Solve: 2 cos^2x - 3 cosx + 1 = 0 for 0 less than or equal to x

*asked by Tiffany Enlow on April 10, 2009* -
## MATH!!!

given isosceles triangle ABC, line AB = BC, and BD is the angle bisector of isosceles triangle ABC prove AB x DC = BC x AD Aren't the two halves congruent? (SAS) If so, then DC is equal to AD. Don't the ratios AB:AD=BC:DC by corresponding parts? how do i

*asked by Annie on September 6, 2006* -
## Overjustification Effect

A fifth grader has just learned how to do some simple programming on her dad's computer. Now, her class at school is learning programming and she gets gold stars for doing well. If the overjustification effect occurs, what is likely to happen this summer

*asked by Melissa on October 23, 2007* -
## pschology

Paraphrase this paragraph using your own words. Some reasons teachers leave the teaching career are for things that are out of their control, such as low pay and the particular administration in charge at their school. Other reasons teachers leave their

*asked by derrius on December 11, 2009* -
## pre calc

A ship is tied to two anchors on the shoreline. The anchor line on the left forms a 46 degree angle with the shoreline and is 350 feet long. The anchor line on the right forms a 63 degree angle with theshoreline and is 283 feet long. Find the exact

*asked by sydney on March 26, 2017* -
## Math check my answer

What music plan is a better deal? site A: $29 per month plus .80 cents per download site B: $17 per month plus $1.19 per download write an equation and show how many downloads make site A a better deal. My answer:: .80x + 29 > 1.19x + 17 after all my other

*asked by Rihanna on June 1, 2013* -
## Math

The top of a swimming pool is in the shape of a rectangle measuring 44 feet by 24 feet. Two of the sides of the pool are trapezoids. The water is 9 feet deep in the deep end and 3 feet deep in the shallow end. Find the volume of the water in the pool.

*asked by asuadg31 on February 9, 2018* -
## physics

Note: The direction of the acceleration ~a of the system is given in the figure. Three masses (17 kg, 21 kg and 67 kg) are connected by strings. The 67 kg mass slides on a horizontal surface of a table top and the 17 kg and 21 kg masses hang over the edge

*asked by I dont like physics on November 24, 2015* -
## physics

Consider the Earth and the Moon as a two-particle system. (a) Find the gravitational field of this two-particle system at the point that is exactly halfway between the Earth and the Moon. (Assume a radial direction r̂ from the Earth to the Moon. Express

*asked by joy on February 16, 2018* -
## Language arts

9. Which sentence in the selection shows the Jenja has matured during the course of this story A) There was only one word for it, and I said it:"Superblastic!" B) This might not just be a summer job; this could be my life's work. C) I knew the job was

*asked by Coco on June 13, 2019* -
## Math

1. Calculate the amount of fluorescein (MW 332.31) you will need to make 10 mL of 15 mM solution in ethanol (EtOH). My answer:0.05 g 2.Using Equation C1V1=C2V2 calculate the volume of stock solution (15 mM) you need to make 1 mL of each working solution

*asked by Vivian on January 14, 2017* -
## Physics-Conservation of Momentum

3. A train loaded with steel, moving at 90km/h, collides head on with a stationary train of mass 6000kg. if the trains couple after collision and move forward with a velocity of 80km/h, find the mass of the train loaded with steel. My work so far: PTO=PTF

*asked by Danielle on January 7, 2016* -
## Chemistry Help

I have no idea where to begin with this?? This class is moving so fast! Dr. Bob222 I made a 100 on my prelab!! and the online test was so fast I was going through my notes and I was scrambling to figure it out and look up stuff on the periodic table and

*asked by Jennie on March 3, 2015* -
## English

You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must describe one

*asked by Evelyn on January 16, 2013* -
## Math

An airline knows that, on average, the probability that a passenger will not show up for a flight is 6%. If an airplane is fully booked and holds 300 passengers how many seats are expected to be empty? If the airline overbooked the flight by 10 passengers

*asked by Patrick on April 3, 2018* -
## statistics

The diameters of grapefruits in a certain orchard are normally distributed with a mean of 6.45 inches and a standard deviation of 0.45 inches. Show all work. (A) What percentage of the grapefruits in this orchard have diameters less than 7.1 inches? (B)

*asked by Laynette on August 28, 2011* -
## Alebra

need to solve a word problem using linear equation in slope form. Ben walks 3 miles per hour, and runs at 6 miles per hour. Runs and walks a total of distance of 210 miles per week. Is this correct 210 = 3/6m +b - equation to show relation of hours run to

*asked by aaron on September 7, 2013* -
## Chem

1N2(g) reacts with H2(g) to form NH3(g), gaseous ammonia. Show balanced thermochemical equations based on both one mole and two moles of NH3(g). Determine Ho ( for both reactions using Table 6.2 (Hof). Use the summation equations. Show your

*asked by Feather on October 20, 2014* -
## Second solution for ambiguous case?

Given a = 31.5, b = 51.8, A = 33 degrees, find the value of c in triangle ABC. bsinA = 51.8sin33 = 28.21 -> bsinA < a < b so there are two solutions Using sine law: sinB/b = sinA/a sinB/51.8 = sin33/31.5 sinB = 51.8 * sin33/31.5 sinB = 0.895628635 B =

*asked by K on July 17, 2018* -
## Chemistry

Cyclohexane is composed of 85.6 % C and 14.4% H. when it is mixed in the proper ratio with oxygen, it can be used as an anesthetic. At 755 mmHg, and 25 degrees Celcius, it has a density of 2.05 g/L. what is the molar mass of cyclohexane and its molecular

*asked by Anonymous on October 15, 2006* -
## physics

You are pushing a refrigerator across the floor of your kitchen. You exert a horizontal force of 294 N for 7.6 s, during which time the refrigerator moves a distance of 3.2 m at constant velocity. (a) What is the total work (by all forces) done on the

*asked by sandy on September 30, 2013* -
## math $$

ty sooooo much another question (sorry about all these just trying to get this done and learn it before tom.) Jennie calculated the probabilities of various events involving a coin. What is the probability of a coin landing on heads at least twice when the

*asked by Angie on February 21, 2013* -
## algebra

Find the real solutions 8x^2 + y^2 = 25 8X^2 - y^2 = 39 Is this no solution because I tried solving it and i got the square root of 32 for y, but when i plugged it in to get x there was a negative under the square root sign which means its no solution,

*asked by meg on April 6, 2008* -
## chemistry

You have 100.7 g of saccharin, a sugar substitute, and you want to prepare a pH = 5.80 solution. What volume of solution can be prepared? For saccharin (HC7H4NSO3), pKa = 11.70 (pKa = −log Ka).

*asked by justin on November 28, 2010* -
## Science

A chemistry teacher needs to prepare 750 ml of a 2.5M solution of Potassium iodide for a lab. How many grams of potassium iodide will be needed to make the solution?

*asked by Ane on April 8, 2016* -
## College Chemistry Lab

The absorbance of a 9.25x10^-8M solution of a fabric dye was measured to be 0.835 at a particular wavelength. What would the absorbance be for a 4.65x10^-8M solution of the same dye under identical conditions?

*asked by L** on March 15, 2010* -
## chemistry

When a solution of 6M HCl is made from a stock of concentrated HCl by adding an equal volume of water, why is the concentration of the solution only an approximate concentration?

*asked by Kathleen on July 25, 2010* -
## Chemistry

When two similar liquids mix to form a solution, the entropy of solution is expectted to be: a.negative b.zero c.positive d.negative at low T and positive at high T

*asked by Sarah on February 28, 2008* -
## Chem

In the lab a 3.3mol per liter solution was prepared by adding H2O to 140mL of a 4.3mol Per Liter solution of HCL. How much water was added?

*asked by BILL on March 19, 2014* -
## chemistry

estimate the mass of BaSO4 that will be produced when a 100ml of a 2M solution of Ba(NO3)2 in water is added toa 100ml of a 2M solution of NaSO4 in water

*asked by Alex on April 27, 2014* -
## Chemistry

Suppose that 50.0mL of 0.240M sulfric acid requires 36.0mL of KOH solution to reach its endpoint. What is the molarity of the KOH solution?

*asked by Leonarda on April 27, 2012* -
## Chemistry

Suppose a solution containing 4.50g of sodium phosphate is mixed with a solution containing 3.75g of barium nitrate. How many grams of barium phosphate can be produced?

*asked by Stockton on August 6, 2013* -
## science

The enthalpy of solution of KBr in water is about +198 kJ/mol. Nevertheless, the solubility of KBr in water is relatively high. Why does the solution process occur even though it is endothermic

*asked by Samantha on January 17, 2013* -
## chemistry

What mass in g of NaCl is formed from the reaction of 54.0 mL of a 0.078 M AgC2H3O2 solution with 71.0 mL of 0.109 M MgCl2 solution? 2 AgC2H3O2 (aq) + MgCl2 (aq) --> 2 AgCl (s) + Mg(C2H3O2)2 (aq)

*asked by candace on February 28, 2010* -
## chemistry

When 5 grams of salt is dissolved in 95 grams of water the temperature of the solution increases 10°C how much heat is evolved the heat capacity of the solution is 1.1 cal/g°C

*asked by Cheryl on October 7, 2013* -
## Chemistry Lab

If 3.5 mL of distilled water is added to 1.5mL of a 0.150 M solution of CoCl2, what is the concentration of the resulting solution? M1V1=M2V2 M1= 0.150 V1= 1.5mL M2= 3.5?

*asked by Lia on November 3, 2014* -
## chemistry

If 35.7{\rm mL} of 0.205{\rm M} {\rm KOH} is required to completely neutralize 20.0{\rm mL} of a {\rm HC_2H_3O_2} solution, what is the molarity of the acetic acid solution? {\rm HC_2H_3O_2}(aq) + {\rm KOH}(aq) \to {\rm KC_2H_3O_2}(aq) + {\rm H}_{2}{\rm

*asked by Anonymous on July 30, 2012* -
## chemistry

A solution containing 29.00 mg of an unknown protein per 22.0 mL solution was found to have an osmotic pressure of 3.10 torr at 18 ∘C. What is the molar mass of the protein? (3.10 torr* 22mL)=.682 I do not know what to do next

*asked by mmp on February 28, 2016* -
## chemistry (litmus paper)

When using litmus paper I was wondering why do you first wet it? Second, I wanted to know is why is it not suppose to touch the solution? Third, how doo you test for solutions if it is not suppose to touch the solution.

*asked by Lou on May 4, 2009* -
## Chemistry

you have 5% formic acid solution and a 5% acetic acid solution. You titrate 5mL each with .1868M NaOH. A. Which will need more NaOH to reach the end point? B. How much more?

*asked by jack on November 24, 2015* -
## Chemistry 1010

How many grams of Ag2CO3 will precipitate when excess K2CO3 solution is added to 70.0 mL of 0.692 M AgNO3 solution? 2AgNO3(aq) + K2CO3(aq) --> Ag2CO3(s) + 2KNO3(aq)

*asked by Kelvin on January 8, 2015* -
## chemisty

NaOH + HCl -> NaCl + H2O What is the molarity of a NaOH solution that required 31.6mL to neutralize 25.0mL of a 0.145 M HCl solution?

*asked by Jo on December 5, 2012* -
## Calculus

What is the simplest solution to the Brachistochrone problem and the Tautochrone problem involving calculus? (I know that the cycloid is the solution but I need a simple calculus proof as to why this is the case)

*asked by Sam on May 27, 2010* -
## chemistry

You dissolved 450.0 g of sugar (C12H22O11) in 150 mL of water. The density of water is 1.00 g/mL a. calculate the molarity of the solution b. calculate the molality of the solution

*asked by June on November 7, 2013* -
## chemistry

a 35.5 mL sample of an NaOH solution is needed to titrate a 2.08 g sample of pure benzoic acid (HC7H5O2)a solid. What is the molarity of the NaOH solution?

*asked by b on May 9, 2012* -
## Chemistry

The freezing point of a 5% solution of boric acid is -1.55 degrees Celsius.How many grams of boric acid should be used in preparing 500mL isotonic solution?

*asked by Qin on October 14, 2018* -
## biology

A solution of the enzyme amylase was added to a solution of starch and kept at 25C. The starch was broken down by hydrolysis. Explain how you would determine the rate of hydrolysis.

*asked by Arina Aliah on September 13, 2010* -
## Analytical Chemistry

I have a 0.00156 M solution of CuSO4*5H2O in water (from 0.0398 g of CuSO4*5H20 in 100 mL of water). How would I calculate the ppm of Cu of that solution from that information?

*asked by Ronnie on November 15, 2015* -
## chemistry

if 5.105 gm of KHP (Mwt=204.2)was dissolved in 250 ml,10.70 ml of this solution of KHP was titrated with 10.0 ml of NaOH . Calculate the concentration of NaOH solution

*asked by bibi on September 24, 2014* -
## Chemistry

a saturated solution of barium chloride at 30c contains 150g water. how much aditional barium chloride can be dissloved by heating this solution to 50c?

*asked by Helen on November 17, 2011* -
## Chemistry

a saturated solution of barium chloride at 30c contains 150g water. how much aditional barium chloride can be dissloved by heating this solution to 50c?

*asked by Helen on November 17, 2011* -
## science

a reference solution is to be prepared with 5PPM parabenzopyrene(252 mol. wt.)the quantity of parabenzopyrene required for preparing one litre 5PPM solution is

*asked by apu on January 7, 2013* -
## science

The dissociation constant of ethanoic acid (ch3cooh) at 298k is 1.8*10^-5 in a buffer solution the concentration of ch3coo and ch3cooh are 0.05m and 0.1m respectively what is the ph of the buffer solution

*asked by abiola on February 4, 2016* -
## 9th grade

How many grams of water must be added to 2 grams of a 65% iodine solution in order to produce a 42% iodine solution? Round your answer to the nearest tenth

*asked by SHAKAYLA on July 26, 2010* -
## Chem II

A 0.10 M HF solution is 8.4% ionized. Calculate the H^+ ion concentration. Here is my line of thought. For every mole HF disolved yeilds one mole of H^+. Since there is ).10 M HF, and the solution is 8.4% ionized = 0.84 M. Is this correct?

*asked by Ken on June 18, 2008* -
## Chemistry

The freezing point depression of a 0.100 molality solution of NaCl(aq) solution is 0.34 deg C. Calculate the % dissociation of NaCl(aq) (Kf for water = 1.86 deg Cm^-1)

*asked by AJ on August 30, 2009* -
## Chemistry

a saturated solution of barium chloride at 30C contains 150g water. How much additional barium chloride can be dissolved by heating this solution to 60C?

*asked by Ondina on April 18, 2012* -
## chemistry

What is the molarity of each kind of ion in a solution of magnesium chloride that contains 29.0 g of magnesium chloride dissolved in enough water to make 1.73 L of solution? MgCl2 Mg2+ + 2 Cl-

*asked by megan on April 24, 2012* -
## chemistry

a saturated solution of barium chloride at 30c contains 150g water. how much additional barium chloride can be dissolved by heating this solution to 60c

*asked by anita on November 30, 2013* -
## Chemistry

What is the concentration in mol/L of a CuSO4 solution containg 1.0 mole of CuSO4 in 250 mL of Solution? I would like to know how to calculate the answer and be giving the correct answer please.

*asked by Hannah on November 19, 2012* -
## Chemistry

The density of a solution of hydrochloric acid is 1.0929 g/cc, and it is 19.00 percent by mass. What volume of the solution (in milliliters) do you need to supply 30.0 g of hydrochloric acid? I'm not sure how to start

*asked by Anonymous on October 15, 2017* -
## physics

Show that the energy-momentum tensors for electromagnetism and for scalar field theory satisfy the dominant energy condition, and thus also the weak, null, and null dominant conditions. Show that they also satisfy w>-1

*asked by Soshiant on March 18, 2013* -
## calculus

Q.NO.3: Show that the function z=tan^-1(2xy/x^2-y^2)satisfies Laplace’s equation; then make the substitution x=r cosθ, y= r sinθ and show that the resulting function of satisfies the polar form of laplace’s equation

*asked by akash on May 12, 2017* -
## physics ( math)

Solve the Equations in terms of X: a. x/a = b/c b. s=xt^2/2 d. 4= 10/x e. 5= 5/x-5 f. 40=2((x10)2-5) g. x(y+2)/ (5y +8) 1.What is the average of 2/9 and 4/5? 2. Subtract 4.20 x 10^-5 from 6.468 x 10^-4 3.Given: D= density; M= Mass; V= Volume; and D= M/V a)

*asked by K.C on September 9, 2010* -
## advanced physics

A toy roller coaster contains a loop of radiusR. A toy train, which consistsof a lot of small waggons is moving towards the loop with constant velocity. The lengthof the train isL >2Rπ, and the radius of the loop is much larger than the height of

*asked by michel on May 22, 2015* -
## Chemistry

A volume of 70.0mL of aqueous potassium hydroxide(KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the solution if 19.2mL of 1.50M H2SO4 was needed? The equation is 2KOH+H2SO4->K2SO4+2H20

*asked by Peter on September 18, 2010* -
## chemistry

The polarogram for 20ml solution that was 3.65 x 10^-3 M in cadmium (Cd2+) gave a wave for that ion with a diffusion current of 31.3microampere. Calculate the percentage change in concentration of the solution is the current in the limiting current region

*asked by Adeola on July 10, 2015* -
## Chemistry

80.0 grams of KBr is mixed with sufficient water to prepare 1865 mL of solution. This solution is then mixed with 46.3 mL of 0.425 M KCl solution. 12 mL of this mixture is subsequently added to 61.0 mL of distilled water. Calculate the molarity of K+ ions

*asked by Christian on March 1, 2011* -
## Improving your writing

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 Disselkoen. Your office provides secretarial

*asked by jacqui on April 9, 2011* -
## PROGRAMMING

Create a C program that contains a function that computes the final price for a sales transaction and return that value to a calling method. The function requires three arguments: product price, salesperson commission rate and customer discount rate. A

*asked by ME-ANN on September 28, 2014* -
## Physics

1) The speed of light in a certain liquid is 3/5 the speed in a vacuum. What is the index of refraction of the liquid? 2) A ray of light strikes a piece of glass (n=1.52) and makes an angle of 50 degrees with the surface. What angle does the refracted ray

*asked by Ninzy on February 16, 2011* -
## Physics

1) The speed of light in a certain liquid is 3/5 the speed in a vacuum. What is the index of refraction of the liquid? 2) A ray of light strikes a piece of glass (n=1.52) and makes an angle of 50 degrees with the surface. What angle does the refracted ray

*asked by Ninzy on February 16, 2011* -
## Chemistry

The boiling point of a solution increases directly as a function of the number of moles of solute present in a given mass of solution. This relationship is expressed mathematically by the following equation. ΔTb = Kb·m ΔTb is the boiling-point elevation

*asked by Anne on January 16, 2018* -
## Math

Two cars leave town at the same time and travel in opposite directions. The average speed of one car is 15 mph faster than the average rate of speed of the other car. The Carrs are 375 miles apart after 3 hours. Find the average speed rate of the two cars.

*asked by Asaya on February 24, 2019* -
## math

One printing press can print 5,000 advertising cards in 12 seconds. Another printing press can print the same number of cards in 7 1 2 seconds. If both presses are used together to print the 5,000 cards, how many seconds will it take them? same with this

*asked by Ashley on September 27, 2017* -
## Chemistry 2

In a study designed to prepare new gasoline resistant coatings, a polymer chemist dissolves 6.053g of poly in enough water to make 100.0 mL of solution. At 25C, the osmotic pressure of this solution is 0.272 atm. What is the molar mass of the polymer

*asked by Mike on March 26, 2010* -
## Chemistry

A 10.00mL sample of 0.02141mol/L potassium iodate was treated with excess iodide ion and titrated with sodium thiosulfate. If 32.33 mL of a Na2S2O3 solution was requried to reach the colorless endpoint (after addition of starch indicator) , what molarity

*asked by Arielle on January 13, 2015* -
## Chemistry

when a platinum wire dipped into an unknown solution was held over a Bunsen burner flame, an intense purple colour resulted. when 6 drops of 1M AgNO3(aq) in 6MHNO3(aq) was added to this solution, a white-coloured precipitate formed. What is the chemical

*asked by KJ on September 29, 2010* -
## chemistry

0.50g of a mixture of K2c03 and Li2c03 requires 30ml of a 0.25N hcl solution for neutralization. What is the percentage composition of the mixture? The answer k2c03 96% Li2c03 4% K2c03 weight 138g/mol 138/2 = 69 Li2c03 weight 74g/mol 74/2 = 37 30ml x 0.25N

*asked by Fai on February 22, 2013* -
## Physics

You have been asked to design a "ballistic spring system" to measure the speed of bullets. A bullet of mass m is fired into a block of mass M. The block, with the embedded bullet, then slides across a frictionless table and collides with a horizontal

*asked by Marie on March 23, 2014* -
## Visual Basic

what does IntTemp and IntRem mean? and whats wrong with my code, i don't know whats wrong with it... Code below: Dim intNum As Integer 'the numderator is read as a whole number. Dim intDenom As Integer 'the denominator is read as a whole number. Dim

*asked by Jessica on January 31, 2013* -
## math,algebra

They may want you to add the fractions and give the answer in forms of a fraction. in that case, you need to convert to common denominators before addineg. In that case 1/3 + 1/5 + 1/10 = (10 + 6 + 3) /30 = 19/30 5/6 - 3/5 = (25 - 18)/30 = 7/30 You answer

*asked by drwls on December 6, 2006* -
## math,algebra,help

can someone show me how to solve this: Simplify 3 --- + 1 x-5 ----------- 4 1 minus ---- x -5 that did n't look right...typo... here it is its a fraction on top of the other so the top is fine.the bottom should read one minus (4)/(x-5) Get least common

*asked by jasort20 on March 13, 2007* -
## Physical Science

When you do 100 J of work on the handle of a bicycle pump, the pump does 40 J of work pushing the air into the tire. What is the efficiency of the pump?

*asked by Leah on November 3, 2012* -
## math

A and B together can make a wall in 60 days. A has worked for 12 days, B finishes the remaining work in 36days. How many days will B take to finish the whole work alone?

*asked by sanjana singhania on November 24, 2014* -
## English

1. Which of the following lines from Marge Piercy’s poem “To Be of Use” best demonstrates the speaker’s view that work is gratifying? (1 point) ”Botched, it smears the hands, crumbles to dust.” ”Greek amphoras for wine or oil,” ”The

*asked by germX on June 6, 2018* -
## math

Rosy has been jogging for 3 weeks. In the first week She jogged 3 days each for 4/6 of an hour. During week 2 she jogged for 3/4 of an hour on 2 days. In week 3 she jogged 4 days each for 3/5 of an hour . WRITE one expression that would show the total time

*asked by sid on March 24, 2014* -
## math

You have a total of 52 dimes and quarters. You have 10 more quarters than dimes. Which system of equations can you use to find the number x of quarters and number y of dimes you have? Use the system to determine how much money you have in quarters and

*asked by jane on March 15, 2017* -
## Physics

An object whose mass is unknown is held by two rigid rods. The whole system is at rest. The angle between the vertical direction and the left rod from point A to B is 60 degrees. The angle between the vertical direction and the right rod from point C to D

*asked by Brittany on June 24, 2013* -
## math,algebra

Can someone help me put this into equations where i can solve them thanks. Problem #1 Allen bought 20 stamps at the post office in 37cents and 20cents denominations. If the total cost of the stamps was $7.06, how many 37cents stamps did Allen buy? Problem

*asked by jasmine20 on February 11, 2007*

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