# 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 23-
## Algebra 1

Solve the system of equation by graphing. Then classify the system. 4x-y=11 4x+5y=-31. Thank you.

*asked by Esther on February 3, 2011* -
## College Algebra

A pharmacist wants to mix two solutions to obtain 100 cc of a solution that has an 8% concentration of a certain medicine. If one solution has a 10% concentration of the medicine and the second has a 5% concentration, how much od each of these solutions

*asked by Math H of the medcater on January 7, 2015* -
## physics

a 50kg box on a ramp needs to be lifted 3m using a force of 100N. What tpe of pulley system could do the work? What type of lever system?

*asked by A on November 17, 2015* -
## Math

Can somebody please explain to me how to factor trinomials that contain two unknown variables and are complex sum & product?? Examples: 2x^2 + 13xy + 15y^2 11x^2 + 14xy + 3y^2 I understand how to factor trinomials that only have x as the variable, but

*asked by Danielle on April 4, 2007* -
## Numerical method - numerical integration

Evaluate the following integration: I(f) = integral sign from 0 to 20 of e^(-x) dx 1. Analytically 2. Rectangle method with h= 10,5,4,2,1. 3. Mid-point method with h= 10,5,4,2,1. 4. Trapezoidal method with h= 10,5,4,2,1. 5. Simpson's method with h=

*asked by Anonymous on November 1, 2010* -
## Numerical method - numerical integration

Evaluate the following integration: I(f) = integral sign from 0 to 20 of e^(-x) dx 1. Analytically 2. Rectangle method with h= 10,5,4,2,1. 3. Mid-point method with h= 10,5,4,2,1. 4. Trapezoidal method with h= 10,5,4,2,1. 5. Simpson's method with h=

*asked by Anonymous on October 31, 2010* -
## chemistry

How many grams of magnesium metal will react completely with 5.2 liters of 4.0 M HCl? Show all of the work needed to solve this problem. Mg (s) + 2 HCl (aq) yields MgCl2 (aq) + H2 (g)

*asked by Tessa on May 21, 2014* -
## Mathematics

9A. Solve the inequality.Show all steps.15 > 7 - t/3 9B. Check your work. Hi. I'm not trying to cheat. I don't understand the equation. If you see another question by me with the same question, I'm sorry. I had hit submit and it wasn't there. Sorry.

*asked by Invisible on November 4, 2016* -
## chem

If 34.2 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 299 Kelvin and 1.21 atmospheres? Show all of the work used to solve this problem. 2 Li (s) + 2 H2O (l) yields 2 LiOH (aq) + H2 (g)

*asked by rae on February 19, 2014* -
## 7th Grade Math 123

Write one or two equations to represent the situation below. Solve the equation(s). Show all your work. A collection of dimes and quarters totals 72 coins. Together the dimes and quarters are equal to $11.70. How many of each coin are in the collection? 2

*asked by Danny on November 7, 2006* -
## Physics

Let mass be: m1=0.100 kg m2=0.300 kg m3=0.500 kg (a.)Compute for the acceleration of the system if the table is frictionless. (b.)Compute the acceleration of the system if the coefficient of the friction between the m2 and the table is 0.400. You can't

*asked by frosty on September 10, 2006* -
## Math

Using the intersection method, I need to solve the following equation: 5x-3.3=x-2.1 Can you point me on the right path? you have to get x's on one side, and the numbers on the other. then solve for x. Kira, Thank so much for your help, but how do you graph

*asked by Olivia on December 20, 2006* -
## Algebra

Solve the inequality and graph the solution. 9(x+2)>9(x-3) my work: 9x+18>9x-27 +27 +27 ____________ 9x+45>9x -9x -9x ____________ 45>0 I found it to come out to 45>0.. but that can't be right. What am I doing wrong?

*asked by Anonymous on September 10, 2009* -
## Algebra

I keep confusing myself when I look at this word problem. I am not sure if I am setting it up correctly. Any advice would be appreciated. It has several parts to it. 1. Suppose you are in the market for a new home and are interested in a new housing

*asked by It's me :) on February 2, 2009* -
## psychology

•Write at least 300 words describing a time when you had to test a theory. This theory may be something you have tested at work, school, or even at home. ◦What type of informal research method did you use? ◦How was your research method similar to

*asked by charles miller on May 16, 2011* -
## Financial Management

The finance department of a large corporation has evaluated a possible capital project using the NPV method, the Payback Method, and the IRR method. The analysts are puzzled, since the NPV indicated rejection, but the IRR and Payback methods both indicated

*asked by Anonymous on November 12, 2012* -
## math

Joe owns a sandwich shop. He charges $10.00 for two sandwiches and one drink and $6.50 for one sandwich and one drink. How much does Joe charge per sandwich? How much per drink? What is the solution of the system? Use elimination. 3 − 2 = 5 −2 + = −3

*asked by Help i need somebody not just anybody on January 22, 2019* -
## math , help

can someone show me how to solve this: directions: pivot once as indicated in each simplex tableau. Read the solution from the result. the number that is highlighted is row 2 column 3 which is the 5 the matrix is a 4 X 8 under column one it reads as:

*asked by jas on June 13, 2007* -
## Chemistry

Consider these changes. (a) Hg(l)->Hg(g) (b) 3O2(g)->2O3(g) (c) CuSo4*5H2O(s)->CuSO4(s)+5H2O(g) (d) H2(g)+F2(g)->2HF(g) At constant pressure, in which of the reactions is work done by the system on the surroundings? By the surroundings on the system? In

*asked by Anonymous on November 9, 2011* -
## MATH

A pharmacist mixed some 10%-saline solution with some 15%-saline solution to obtain 100 mL of a 12%-saline solution. How much of the 10%-saline solution did the pharmacist use in the mixture? A 60 mL B 45 mL C 40 mL D 25 mL CAN SOME GIVE AN EQUATION TO

*asked by Anonymous on May 7, 2010* -
## Pre-calculus-check answers

Write the slope-intercept form of the equation of the line that passes through the point (-5,4)and has a slope of -1. Answer: y=-x-1 2)Solve the system of equations algebraically: 1/3x+1/3y=1 and 2x+2y=9 Answer: no solution

*asked by Lucy on August 23, 2008* -
## Accounting

In its first month of operations, Giffin Company made three purchases of merchandise in the following sequence: (1) 260 units at $5, (2) 360 units at $7, and (3) 460 units at $8. Assuming there are 160 units on hand at the end of the period, compute the

*asked by Allie on October 12, 2015* -
## health and physical

your digestive system has three main functions:digestion, absorption and elimination. in which organ dose absorption begin? a. mouth*** b.stomach c.small intestine d.gallbladder i think a.mouth

*asked by larry :can you please check my answers on May 2, 2016* -
## help!!!!!

1. A sample of air was found to contain 21% oxygen by volume. how many ml of oxygen are present in 2.0 L of air? 2. A 25.0g solution containing salt and water is 2.2% salt by mass. what is the mass (in g) of salt in the solution? please show me how to

*asked by Anonymous on September 13, 2011* -
## chemistry

Lab: Electrolytic Cells Purpose: The purpose of this experiment is to test the method of stoichiometry in cells. Materials: balance steel can tin electrode power source wire lead (x2) tin (II) chloride solution (3.25 M) timer large beaker Procedure: Take

*asked by Jennifer on April 17, 2008* -
## Algebra I

How do you write a system of linear equations in two variables? Explain this in words and by using mathematical notation in an equation. What steps will be taken to solve the system that you provided?

*asked by Austin on August 28, 2012* -
## AP Physics

When traveling a highway in the mountains, you may see elevation signs that read "914 m (3000 ft)". Critics of the metric system claimt hat such numbers show the metric system is more complicated. How would you alter such signs to be more consistent with a

*asked by AP Physics on June 10, 2009* -
## math

I am not sure how to do these. 1. Simplify 4√6/√30 by rationalizing the denominator. Show your work. 2. Simplify (2√5 + 3√7)^2 Show your work. Justify each step.

*asked by edison1969 on July 30, 2014* -
## numerical methods

Consider a spherical storage tank containing oil. The tank has a diameter of 8 ft. You are asked to calculate the height h to which a dipstick 10 ft long would be wet with oil when immersed in the tank when it contains 6 3 ft of oil. The equation that

*asked by aira on April 23, 2015* -
## statistics

2. A researcher measures the heart rate in a population of runners and finds they have an average heart rate of µ = 50, σ = 5. You do not need to show a graph, only computation work. 2A. Based on the average heart rate cited above, what proportion would

*asked by chris on June 27, 2014* -
## Algebra Problem

I've gotten confunsed. Please help. Solve: 2y-a = a + 3b ____ ______, for y 3 4 Please show how to solve this. If you mean (2y -a)/3 = (a + 3b)/4 then 2y - a = (3/4) (a + 3 b) 2y = (7/4) a + (9/4) b y = (7/8) a + (9/8) b f(x)=x(squared)-4x+9 solve for x

*asked by amy on August 30, 2005* -
## math

3/4x-2/5y=2 1/2x-3/5y=-2 im having trouble re aranging the y and the x values and im saposed to be sovling it with either substition or elimination Try this: Double the last equation to get x = -4 + (6/5) y Then substitute that x into the first equation

*asked by robynn on March 27, 2007* -
## Math help

How would you solve these systems by elimination? I'm in desperate need of help! 1. -35x-15y=0 -56x+24y=0 2. -56x+72y=-16 -49x+63y=-14

*asked by Anonymous on January 25, 2014* -
## math

What is the solution to x+5+x+1+x=3(x+2)+1 1)x=0 2)x=3 3)no solution 4) infinite I got #3 no solution x+5+x+1+x=3(x+2)+1 x+5+x+1+x=3x+6+1 3x+6=3x+7 -3x -3x 6=7 so no solution Is this correct? Thanks for checking over my work.

*asked by B8 on January 11, 2014* -
## Physics

A system performs 349 J of work on its surroundings while losing 133 J of internal energy. Determine the heat transferred to the system during this process.

*asked by Kaley on June 21, 2012* -
## Thermodynamics

in a certain process, 500 cal of heat are supplied to a system, and at the same time 100 joules of work are done. what is the increase in the internal energy of the system

*asked by Kingchaww on October 16, 2017* -
## math

Dave & Jim separated the peanuts they had collected into two piles. One pile was for doubles (2 peanuts inside) and the other for triples (3 peanuts inside). When they finished shelling peanuts, Dave & Jim had 35 shells and 78 peanuts. How many shells were

*asked by jenny on August 29, 2006* -
## chem

no idea how to do this! Please help! Determine the freezing point of a water solution of fructose( C6H12O6) made by dissolving 59.0 g of fructose in 485g of water. Answer in celcius. Same method outlined for your other post. Post any work if you get stuck.

*asked by Anonymous on May 29, 2007* -
## algebra

System of equations, the addition method 3x-3y=6 3x+3y=0 Whats the answer?

*asked by noelle on May 21, 2008* -
## Math

what are the pros and cons of the substitution method in a system of equations?

*asked by Sally123 on September 18, 2018* -
## govenment

1)In what ways does the existence of minor parties also work to strengthen the United States' two-party system? 2)What does the fact that aliens generally are not allowed to vote show about American beliefs? It shows that Americans believe that no one

*asked by Debra on March 27, 2007* -
## math

Create a linear system to model this situation. Then use substitution to solve the linear system to solve the problem. - Bobbie has been saving dimes & quarters to buy a new toy. She has a total of 28 dimes and quarters, with a value of $4.30. How many of

*asked by trixie on June 11, 2013* -
## chemistry

calculate the molarity of an acetic acid solution if 83.71 mL of the solutions needed to neutralize103 mL of 1.08 M sodium hydroxide. the equation for the reaction is. HC2H3O2(aq) + NaOH(aq) >Na+(aq) + C2H3)2(aq) +H2O(aq) Please show your work i really

*asked by Randy on April 30, 2012* -
## MATH

Carolyn and Kim are selling lemonade this summer. It costs $0.10 to make each cup of lemonade. They are going to sell each cup of lemonade for $0.25. a. What is the total cost to make 55 cups of lemonade? Show or explain your work.$5.50 b. If they

*asked by NINA on February 20, 2012* -
## Geometry

Complete Problem 34 in Section 5.2 Exercises (Ch. 5) of Essentials of Geometry for College Students. Use the table below to show your work and solve the problem. You may add or delete rows as necessary.

*asked by Ice on July 6, 2015* -
## prealgerbra

how do you solve 45 min/2 mi=?h/1 mi pre algerbra - drwls, Friday, January 6, 2012 at 11:44pm If you go 2 miles in 3/4 hour, you go 1 mile in 3/8 hour (or 22.5 minutes). how do we show are work then

*asked by steph on January 7, 2012* -
## math 210 fundamentals of geometry

Complete Problem 31 in Section 5.2 Exercises (Ch. 5) of Essentials of Geometry for College Students. Use the table below to show your work and solve the problem. You may add or delete rows as necessary.

*asked by barbara on December 4, 2015* -
## chemistry

a sample of sodium-24 with an activity of 12 mCi is used to study the rate of blood flow in the circulatory system. If sodium-24 has a half-life of 15 h, what is the activity of the sodium after 2.5 days. please show work.

*asked by rachel on October 4, 2012* -
## Algebra

Solve -3/8h=9. Show work. A. -24 B. -3.375 C. 9.375 D. 72

*asked by Deja on July 19, 2011* -
## Math - system of equations

write two other equations that have the same solution as this system od equations. 3x-4y=-14 -x+3y=18 I found the solution to the system it is (6,8) there after how do i go about it?

*asked by Shaila on September 7, 2010* -
## Math

1. Should the census figures be adjusted for the undercount? If so, how? If this solution introduces errors of its own, estimate how large they are, compared to the undercounts. 2. What method should Congress select for apportioning the House of

*asked by David Earnest on March 6, 2010* -
## Algebra

1. A printer can print 40 pages in 1.6 minutes. a. Write and solve a proportion to find the number of pages that the printer can print in 5 minutes. Show your work. b. Lana wants to use the printer to print 150 pages. Find the time, in minutes, it will

*asked by Anonymous on June 13, 2014* -
## chemistry

I have many questions. I have a test tuesday and need to get these problems done and understand them today because i am currently studying. I am in college and my professor has not emailed me back regarding solutions for the review problems she posted. Is

*asked by Sarah (C) on April 23, 2011* -
## Algebra I

to determine whether a given number is a solution of an equation. Problem: Is 5 a solution of 10x-xto the 2nd power = 3x-10? my work: 10(5)-25=25 and 50-25=25 so x is not a solution. right or wrong? Im new at this

*asked by Nancy on September 9, 2014* -
## calculas

Consider a cooling cup of coffee whose initial temperature is 205°. The room temperature is held at 70°. Suppose k = 1/16. Let y be the temperature, and y' its time derivative. ----------------------------------- I have the differential equation: y' =

*asked by pasta! on March 12, 2012* -
## chemistry

pleast help me work this prob lead is a toxic meatal that affects the central nervous system. a Pb-contaminated water sample contains 0.0011% Pb by mass. What vilume of the water in milliliters contains 115g of Pb? (assume that the density of the solution

*asked by swtnblk on November 5, 2011* -
## chemistry

pleast help me work this prob lead is a toxic meatal that affects the central nervous system. a Pb-contaminated water sample contains 0.0011% Pb by mass. What vilume of the water in milliliters contains 115g of Pb? (assume that the density of the solution

*asked by swtnblk on November 6, 2011* -
## Algebra II

1) There is a solution to x = -(y-5)^2 and x = (y -5 )^2 + 7 a) true b) false 2) There is no real solution to y = -1 and y = x^2 + 9 a) true b) false 3) the vertex of the graph of y = 3(x+ 9)^2 + 5 is a minimum value ? a) true b) false 4)find the center

*asked by anonymous on April 17, 2011* -
## Math

7k divided by 3=21 Can you please show me the work? I know that k=9 but I don't know how to show the work.

*asked by Zero on March 9, 2015* -
## math

how do i show my work for, 5+10/(1*(8+6)-4=6 ya i know the answer but i wanna know how to show my work.

*asked by karla on January 9, 2012* -
## statistics

If the probability of running out of gas is .03 and the probability the electronic starting system will not work is .01 a.) what is the probability there will be enough gas and that the starting system will work? assume the two events are independent b.)

*asked by kkg on September 2, 2011* -
## Algebra help

I need to solve the system by triangularizing the augmented matrix and using back substitution. If the system is linearly dependent, give the soloution in terms of a parameter. -3x+y-z=-4 6x-2y+2z=8 -12x+4y-4z=-16

*asked by Kristen on March 27, 2013* -
## Halfway solved-calc

So I'm trying to solve this problem but one thing I don't get is, how do I know which method to use just by looking at the graph (disk, washer, or shell)? Find the volume of the solid generated by revolving the region bounded by the graphs y=x^2- 4x+ 5 and

*asked by Hannah on May 22, 2013* -
## Chemisry

What is the % M/M concentration of 5.00 mL of methanol in 25 g solution of methanol in water? The density of methanol is 0.791 g/mL. The density of water is 1.000 g/mL. The density of the solution is 0.995 g/mL. Please show work, thank you!

*asked by Rena on February 23, 2013* -
## math

Tickets to a museum cost $3 and $8 for adults. a group of four visitors to the museum spent a total of $22 on tickets. Write and solve a system of equations to represent this situation. Interpret the solution

*asked by max on March 16, 2017* -
## math

I'm having trouble trying to identify which method is best to use for graphing when faced with an equation. Are there certain things that I need to look out for that would indicate if it were best to use the table of values, slope-intercept method, or the

*asked by sarah on September 17, 2008* -
## Math

Can someone please work out the steps in solving this elimination problem. Thank you. The problem is x + 2y = -7 x - 5y = 7

*asked by Tyler on April 17, 2014* -
## Chemistry

Confused on these, please explain or show work for the answer if you can. :) 1. What is the morality of a water solution that freezes at -0.633°C? 2. What is the freezing point of a solution that contains 1.99 g of a molecular solute of molar mass 58.5

*asked by Lauren on December 6, 2017* -
## Art Help Please!!!!!

To create a portfolio of work, thsi artist would do all of the following except. The picture is of a robot in black and white. A. include more drawings of characters the artist has created to show creativity. B. include a variety of color schemes and

*asked by Callie on November 25, 2014* -
## math

(1)Is the Equation true, false, or open? 4y + 8 = 6y + 3 A. True; the expressionas are the same for all values of variables B. False; the expressions are never the same ****** C. Open; there is a varible (12)Which equation is an Identity A. 7 - (9x + 3) =

*asked by kelseypooh on October 9, 2018* -
## geometry

The origin O and the points P(4,1) , Q(5,5) and R(1,4) form a quadrilateral. a) show that OR is parallel to PQ. b) show that OP is parallel to RQ. c) show that OP = OR. I found the answers to a & b through the use of gradients. However i do not know what

*asked by Emily on June 11, 2019* -
## Bio

Which 2 body systems interact to make your body move? Circulatory System Skeletal System Muscular System

*asked by Please Help Meh!!! on May 1, 2019* -
## Algebra

please help me with this question and check my answers. Solve the problem. A rectangle with width 2x + 5 inches has an area of 2x4 + 9x3 - 12x2 - 79x - 60 square inches. Write a polynomial that represents its length. ( I don't know how to solve this

*asked by Maddy on October 15, 2007* -
## GENERAL CHEMISTRY

CALCULATE THE pH AND HYDROLYSIS IN 0.10 M AlCl3 SOLUTION.Ka = 1.2 X 10-5 FOR [Al(OH2)6]+3,OFTEN ABBREVIATED Al+3.TELL WHETHER pH IS ACID OR BASE.GIVE IONIC EQUATION. Help us a little by telling us how much you know to do and exactly what you don't

*asked by SHAWN on July 29, 2007* -
## Math

a customer went to a garden shop and bought some potting soil for $12.50 and 6 shrubs if the total bill was $71 how much did each grub cost if they all cost the same write and solve an equation to show your work

*asked by Xxxtentacion on November 22, 2018* -
## math

a customer went to a garden shop and bought some potting soil for 17.50 and shrubs. if the total bill was $71.00, how much did each shurb cost if they all cost the same? write and solve an equation. show your work

*asked by jessica on November 23, 2015* -
## Mathematics

A high-jumper's path on a jump can be represented by the equation h=-16t^2+80t. At what time(s) does the jumper reach 84 ft? Show or explain your work. Ok, so i have no idea how to do this, does anyone know how to solve this question?

*asked by Ashley on June 1, 2019* -
## Math

A customer went to the garden shop and bought some potting soil for $12.50 and 6 shrubs. If the total bill was $71.00, how much did each shrub cost if they all cost the same? Write and solve an equation. Show your work. $71.00-$12.50=$58.50 58.50/6=$9.75

*asked by lilyanna on November 20, 2018* -
## Chemistry

12 mL of 0.0100 M HCl are added to 25.0 mL of a buffer solution that is 0.010 M HC2H3O2 and 0.11 M C2H3O2-. What is the pH of the resulting solution? I understand to use the ice method, however, i do understand what to plug into the hh equation.

*asked by Lil on March 6, 2016* -
## algebra 1

what steps someone would take to use your method (substitution) and a clear argument stating the reason why your method is better than the other ones. (in other words, come up with a few good sentences that explain why you choose your method and why others

*asked by da on January 21, 2013* -
## algebra 1

what steps someone would take to use your method (substitution) and a clear argument stating the reason why your method is better than the other ones. (in other words, come up with a few good sentences that explain why you choose your method and why others

*asked by da on January 21, 2013* -
## Numerical Analysis

Using the bisection method, Newton’s method, and the secant method, find the largest positive root correct to three decimal places of x3 − 5x + 3 = 0. (All roots are in [−3,+3].)

*asked by Roy on February 21, 2011* -
## algebra 1

what steps someone would take to use your method (substitution) and a clear argument stating the reason why your method is better than the other ones. (in other words, come up with a few good sentences that explain why you choose your method and why others

*asked by da on January 20, 2013* -
## algebra

Find values for m and b in the following system so that the solution to the system is (-3,4). 5x+7y=b mx+y=22

*asked by Becky on December 26, 2007* -
## Algebra

I have a few questions that I need help with. Solve the radical equation, and check all proposed solutions. 5. x- square root 3x-2=4 I don't understand this problem. Solve and check the equation. 10. (x^2+14x+49)^3/4-20=7 would I have to multiply each

*asked by Brit on August 18, 2007* -
## college

• Write at least 300 words describing a time when you had to test a theory. This theory may be something you have tested at work, school, or even at home. • Answer the following questions in your summary: o What type of informal research method did you

*asked by Anonymous on December 17, 2010* -
## Algebra

Classify each system. Give the number of solutions. y=3(x-1) -y+3x=3 My answer : 0=0 Infinitely many(consistent and dependent system) y-2x=5 X=y-3 My answer: 0=2 No solution(inconsistent system) Please My answers are true or false, if my answers are false

*asked by Han on September 24, 2018* -
## math -check

given the equation -3x +2y =4, Write another equation that will form a linear system with: one solution, no solution and infinite solution. Graph the linear using graphing calculator and write your window setting in the format x: Xmin, xmax, Xscl. Y: Ymin,

*asked by Jay on April 15, 2015* -
## math

Solve x^2+2x-4=0 When i try to factor this problem out I cant get it to work. Is this a no solution problem

*asked by jen on April 11, 2010* -
## math

Hello, can someone please enlighten me? MSI means 1000 sq inches, right? I would like to convert this to feet, but I have no idea where to begin. Can you please show me the steps needed or even just show me an example? I was told by someone that 1MSI is

*asked by mary on August 15, 2011* -
## IMPORTANT MATH NEED HELP NOW!!!

. Evaluate the expression. 2(y + 2) for y = 3 (1 point) –4 8 10 2 2. The cost in dollars of a field trip is 64 + 14n, where n is the number of people attending. What is the cost for 48 people? (1 point) $736 $126 $896 $910 3. Write a word phrase for p

*asked by Eevee on November 17, 2015* -
## Math

Solve the logarithmic equation. Express your solutions in exact form only. Please show all of your work. log3(x+2) + log3(x+8) – 2 = log3(x+3)

*asked by Allison - Carson on June 9, 2011* -
## algebra 2

can somebody tell me how I am to solve this problem? x+8)(x-19)(x+3)>0 A. The solution set is {x|___} B. The solution is all real numbers. C. There is no solution.

*asked by Nick on June 18, 2010* -
## Biology

Match the terms with the correct description: a. regulates supply of gases from ATP production b. provides negative feedback signals c. protects body against foreign dangers d. "rapid transit" for liquids and gases e. primary "regulator" of sensory

*asked by mysterychicken on March 21, 2010* -
## Biology

Match the terms with the correct description: a. regulates supply of gases from ATP production b. provides negative feedback signals c. protects body against foreign dangers d. "rapid transit" for liquids and gases e. primary "regulator" of sensory

*asked by mysterychicken on March 20, 2010* -
## Chemistry

I am thrown off by this question because they don't give a molecule to work with. Also i don't know how i would work the acid... help! A 195 mL solution of a dilute acid is added to 102 mL of a base solution in a coffee-cup calorimeter. The temperature of

*asked by Ali on March 29, 2014* -
## algebra

Solve the equation and write down the property you use at each step to simplify the equation. Consider the equation: 4x + 11 = (5x + 34)/2. Be sure to show your work.. Thank You Jiskha..!! :)

*asked by Twanisha on February 16, 2012* -
## Calculus

Solve: dy = [2+(y-2x+3)^0.5]dx The answer in the book is 4(y - 2x + 3) = x^2 + C, but I don't know how to solve. I've tried solving, but this ODE is not exact, nor homogeneous and I don't think the method of integrating factors apply either. Please help.

*asked by Eren on October 11, 2013* -
## Trig

I was doing this problem sin^-1 (4/5) if I'm not mistaking most teachers would say that .927295218 radians is wrong is just an estimation and therefore is wrong so I'm justified in putting this on my paper instead right ( ln( (4i +3)/5)/i ) right? She

*asked by Kate on July 23, 2010* -
## chemistry

sorry i didn't post before.. Lab: Electrolytic Cells Purpose: The purpose of this experiment is to test the method of stoichiometry in cells. Materials: Balance Steel can Tin electrode Power Source Wire lead (x2) tin(II) chloride solution (3.25 M) Timer

*asked by samantha on April 18, 2008*

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