# Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 Question 221047: I need help setting up this equation to solve this problem. The lengths of the sides of a triangle are consecutive even integers. Find the length of the longest side if it is 22 units shorter than the perimeter. I figure N is the side. N+2 and N+4 is the consecutive. The perimeter is 3n+6-22 but how do you set this all up? Click here to see answer by scott8148(6628)

 Question 221177: I have tried to solve the below equation and would to verify that I am correct in my process - thank you. x/x+3 = 2/x-3 x(x-3)=2(x+3) x^2-3x=3x+6 x^2-5x-6=0 (x-3)(x-2) x-3=0, x=3 x-2=0, x=2 Click here to see answer by Alan3354(31530)

 Question 221146: Simplify the algebraic expression 2x - 3y - 7y + 4x – 5 and evaluate it for x = 10, y = 4. Identify the variables, constants, and coefficients in the simplified expression. Click here to see answer by drj(1380)

 Question 221182: how do you simlify expressions? like y+10y how do you solve it? Click here to see answer by jim_thompson5910(28715)

 Question 221220: S=(a-rl)/(1-r) solve for l we get l=(a-S-Sr)/r Bagatrix solver tells us the Sr should be positive, what step did we miss or mess up on. Click here to see answer by rapaljer(4667)
 Question 221220: S=(a-rl)/(1-r) solve for l we get l=(a-S-Sr)/r Bagatrix solver tells us the Sr should be positive, what step did we miss or mess up on. Click here to see answer by RAY100(1637)

 Question 221221: I am performing mass balance equations and came across an equation I can not figure out because of the units. (30 grams/sec)(QR)+(10 grams/cubic meter)(QR) = 40 grams/sec QR is some value for a hypothetical water reservoir flow rate. Would I be able to subtract 30 and then solve by dividing 10? I don't think I can because the units are not the same. Please help. Thanks. Click here to see answer by RAY100(1637)

 Question 221277: Okay, I am in a basic math class at the Art Institute online. I do not want the answer given to me. I am trying to figure out how to set the problem up so that I can answer it myself. I went to this site, http://oakroadsystems.com/math/convert.htm, but I do not understand where to put which numbers. The problem is 1mm = _____cm. The following is the information that I am given in my lecture. Unit of Length In Meters Relation with the British Standard Units Kilometer (km) 1000 1 mi = 1.61 km Meter (m) 1 1 m = 3.28 ft, 1 m = 1.09 yd Centimeter (cm) 1/100 1 inch = 2.54 cm Millimeter (mm) 1/1000 1 inch = 25.4 mm I think I should be able to solve this with the information given, but I do not understand how to start the equation to solve it. Can someone please help. Thank you, Jacquie Click here to see answer by Alan3354(31530)

 Question 221293: how do you solve this equation step by step (x^4+8x^2-1)-(x^2-3x^3+x^4) Click here to see answer by sofiyac(695)

 Question 221308: write the equation of the line that goes through the point (0,3/2) and is perpendicular to the line 5y=3x-4. the equation has to be in standard form. i dont know how to get rid of the fraction in the points. Click here to see answer by Alan3354(31530)

 Question 221439: In need to write an equation 2 less than 7 times a number is nineteen. email address is farog1955@msn.com Click here to see answer by Earlsdon(6294)

 Question 221426: With these thoughts in mind, consider different strategies you can use to solve the following problem: 452 + 721 + 908 Solve the problem using at least two methods other than the traditional algorithm. You may add 400+700+900=2000, then add the tens and ones 52+21+08=81, and lastly add these two numbers together 2000+81=2081. You may add two numbers at a time: 452+721=1173+908= 2081. Click here to see answer by stanbon(57967)

 Question 221454: Find the general term of the set. {2, 4, 6, 8, 10, . . .} Click here to see answer by drj(1380)

 Question 221418: word problem- A student averages 84 on five tests. If the student received grades of 84, 82, 81, and 79 on the first four exams, what grade did the student receive on the fifth exam? I have no idea how to go about solving this. Click here to see answer by rfer(12730)

 Question 221524: Hi all, can anyone show me how to solve the following intergral, I cant figure it out. (The 0 should be beneath the 10, but I couldnt figure out how to show it this way) 0∫10 m(x)dx Any help would be greatly appreciated. Thanks, -nick. Click here to see answer by user_dude2008(1861)

 Question 221380: Can someone please solve this sum for me and explain how you got to the answer? Two cyclists start biking from a trail's start 3 hours apart. The second cyclist travels at 10 miles per hour and starts 3 hours after the first cyclist who is traveling at 6 miles per hour. How much time will pass beofre the second cyclist catches up with the first from the time the second cyclist started biking? muchos gracias (: Click here to see answer by ankor@dixie-net.com(15746)

 Question 221717: 25% of 300 is equal to 500 of T, then T is equal to what number? Click here to see answer by rfer(12730)

 Question 221662: Hi, I am having trouble with a word problem. The problem states "When a rock is dropped from a cliff into an ocean, it travels approximately 16t^2 ft in t seconds. If the splash is heard 4.5 seconds later and the speed of sounds is 1100ft/sec, approximate the height of the cliff." Thanks in advance. Click here to see answer by ankor@dixie-net.com(15746)

 Question 221831: solve the following equation for A : 2A/3=8+4A Click here to see answer by stanbon(57967)

 Question 221815: Ryan does one third of his journey to school by car, and one half by bus. Then he walks the final kilometer. How long is his journey to school? Click here to see answer by josmiceli(9817)

 Question 221896: stephen spent 38.72on new shoes and 23.19 on computer software.when she was finished she had 31.18.how muck money did she have before she whent shopping? i have to use an equation to answer it how whould i doit do not tell me the answer.just how. love, amber Click here to see answer by checkley77(12569)
 Question 221896: stephen spent 38.72on new shoes and 23.19 on computer software.when she was finished she had 31.18.how muck money did she have before she whent shopping? i have to use an equation to answer it how whould i doit do not tell me the answer.just how. love, amber Click here to see answer by MathTherapy(1483)

 Question 221988: I will appreciate it if someone could help me out with my homework, its really difficult to me one of the questions is: Click here to see answer by jim_thompson5910(28715)

 Question 222037: i need help with this because i cant seem to figure it out: 5y-4=7 Click here to see answer by checkley77(12569)

 Question 222076: Write an equation of the line. Show all work. slope = one third. y-intercept= -4 thank you Click here to see answer by Alan3354(31530)
 Question 222076: Write an equation of the line. Show all work. slope = one third. y-intercept= -4 thank you Click here to see answer by rapaljer(4667)

 Question 222084: Write an equation of the line that has a y-intercept of 3 and is parallel to the line whose equation is given. y=x-8. thank u Click here to see answer by Alan3354(31530)

 Question 222091: Write an equation of the line that passes through the given point P and has the given slope. P(0,-6) m=-2 Click here to see answer by rfer(12730)

 Question 222096: Write an equation of the line that passes through point P and is parallel to the line with the given equation. P(-3,6), y= -x-5 Click here to see answer by solver91311(17077)

 Question 222208: A health food manager mixes 8 ounces of lentils that cost 70 cents per pound with white beans that cost \$1.10 per pound to make a soup mix.How many ounces of white beans should be used to produce a mixture that is worth 85 cents per pound?i need help setting up and equation for it Click here to see answer by stanbon(57967)
 Question 222208: A health food manager mixes 8 ounces of lentils that cost 70 cents per pound with white beans that cost \$1.10 per pound to make a soup mix.How many ounces of white beans should be used to produce a mixture that is worth 85 cents per pound?i need help setting up and equation for it Click here to see answer by josmiceli(9817)