# Questions on Algebra: Inverse operations for addition and multiplication, reciprocals answered by real tutors!

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 Algebra: Inverse operations for addition and multiplication, reciprocals Solvers Lessons Answers archive Quiz In Depth

 Question 35031: .1166meg ohms/ 1/.22meg ohms + 1/1meg ohms + 1/x how do I solve for x? Click here to see answer by Prithwis(166)

 Question 35206: there are 3 times as many pears as oranges. If a group of children receives 5 organges each, there will be no oranges left over. If the same group of children receives 8 pears each, there will be 21 pears left over. How many children and organges are there? Click here to see answer by stanbon(57962)

 Question 35327: Using FOIL, simplify the expression. Show that a particular factoring formula leads to the same answer. Need to show the steps of FOIL one by one. (4x-2)(-4x-2) Click here to see answer by checkley71(8403)

 Question 35444: The topic is find formula for the inverse of each of the following: f(x)=x+5 f(x)+(x-2)square3 +5 g(x)=x+4dividedby3-x f9x0+9x-2)square2+2 these are the four problems if you could please help solve them for me to better understand them. Thank you Click here to see answer by stanbon(57962)

 Question 36089: use the discriminant to determine the number of solutions of the quadratic equation, and whether the solutions are real or complex. Note: It is not necessary to find the roots; just determine the number and types of solutions. 5x^2 + 8x + 7 = 0 Click here to see answer by venugopalramana(3286)

 Question 36561: If with x greater than or equal to -1, find and state the domain and range. On this one, I know the inverse is , but the domain and range have me stuck!!! Thanks again, Jamie Click here to see answer by Nate(3500)

 Question 36524: My Friend and I have tried to find the inverse of this problem but we can't seem to get anything to work. our teacher hasn't discussed this with the class and now we have a project due monday on it. the equation is BIM= W*704.5/H^2 BIM= Body Mass indicator, a mathematical formula used to determine how healthy an individual is W= Weight of person in pounds H= Height of person in inches we are looking for an inverse that we have the weight but we need to find the hieght. the person weights 100 lbs. we've tried changing the equation into (100*704.5)*H^-2 among many other things. thanks for helping if you can. Click here to see answer by stanbon(57962)

 Question 37297: the question is the sum of a number and 6 times it's receiprocal is -5. How do I solve this? Click here to see answer by jcmtnez(53)

 Question 37388: The "floor" of a fraction is defined to be the largest integer which is not greater than that fraction. For instance, floor[10/3]=3. Evaluate: floor[floor(1000/7)/floor(71/2)]. Click here to see answer by fractalier(2101)

 Question 37903: Determine whether g(x)=3x-6 and f(x)=1/3x+2 are inverse functions. Thank you Click here to see answer by AnlytcPhil(1278)

 Question 37904: Determine whether g(x)=3x-6 and f(x)=1/3x+2 are inverse functions. Thank you Click here to see answer by fractalier(2101)

 Question 38199: A home was purchased for \$120,000 in 2001. After one year the home had appreciated 5%. After one more year, the home had appreciated an additional 4%. What was the value of the home after these two years, rounded to the nearest hundred dollars? A) \$124,800 B) \$126,000 C) \$130,800 D) \$131,000 . A new car is marked down from \$28,000 to \$25,200. What is the discount rate? A) 9% B) 11% C) 10% D) 15% Click here to see answer by josmiceli(9817)

 Question 38156: A home was purchased for \$120,000 in 2001. After one year the home had appreciated 5%. After one more year, the home had appreciated an additional 4%. What was the value of the home after these two years, rounded to the nearest hundred dollars? A) \$124,800 B) \$126,000 C) \$130,800 D) \$131,000 . A new car is marked down from \$28,000 to \$25,200. What is the discount rate? A) 9% B) 11% C) 10% D) 15% Click here to see answer by fractalier(2101)

 Question 39175: inverse of g(x)=3^x+1 i get to the point of were i have the equation x-1=3^y but i dont know how to get the y isolated on one side Click here to see answer by Nate(3500)

 Question 40473: I am attemping to solve this rational expression problem. The problem consist of adding and simplifying . 6w/w^2-64 + w/w-8 i think the answer is w^2+8 / (w-4)(w+4) However I am unsure .. If I performed this problem incorrectly Please show me the correct format. Click here to see answer by Nate(3500)

 Question 40476: I tried finding a solver on the site to find the reciprocal for this question. y^2+5y-9 / y^2-9y+3 This is a bit tricky. I simply dont understand it. Click here to see answer by Nate(3500)

 Question 40481: I really need help trying to figure out . Subtracting and simplifying a rational expression such as this one . d/(d^2+5d+6) - 2/(d^2+3d+2) I cant come up with an answer for this one. Click here to see answer by stanbon(57962)

 Question 40479: I tried finding a solver on the site to find the reciprocal for this question. y^2+5y-9 / y^2-9y+3 This is a bit tricky. I simply dont understand it. Click here to see answer by stanbon(57962)

 Question 40475: I have another problem that I seem to have a bit of trouble understanding... y^2-81/y^2 * y^2-9y/y^2+y+90 This problem has to be solved as a ration expression. However I think the answer would be y+2/y-2. For some reason I dont think that is rite. Click here to see answer by stanbon(57962)

 Question 20342: What is the steps in this problem? -4x+5(3x-5)=-7-7x Click here to see answer by fractalier(2101)

 Question 41174: I need like a lesson on inverse operations for a questions like -2+8n=40 Click here to see answer by zeynep(43)

 Question 41266: I need some help. Subtract 9 lb 15 oz - 5 lb 8 oz Thanks, Lyn Click here to see answer by Nate(3500)

 Question 44642: I'm returning back to school after 25yrs, need help with algerbra, really bad. my problem is from textbook "Prealgerbra" by Aufmann,Baker and Lockwood, chapter 7.5, question # 14. PROBLEM: The distance (d) a spring will stretch varies directly as the force (f) applied to the spring. If a force of 12lb is required to stretch a spring 3inchs, what force is required to stretch the spring 5 inches? this probable seem simple to you, but I can't grasp the concept. Could you list the steps needed to solve the above problem Click here to see answer by stanbon(57962)

 Question 46005: Find the inverse of : f(x) = 2/x+1 Click here to see answer by Nate(3500)

 Question 46823: Can someone help me find the inverse of the following functions?? please??? f(x)=x+3 f(x)=x/(x+2) f(x)=square root of x f(x)=3^x....this one is 3 to the "x" power please help me thank you! Click here to see answer by stanbon(57962)

 Question 47679: What is -x over 4 =18 2. What is -2 over 3x = -1 over six 3. What is 14y =23y-17-10 4. What is 0.22y-0.6=0.12y+3-0.8y Please help! Click here to see answer by checkley71(8403)

 Question 48808: you are fencing a rectangular corral to keep horses. The Region's length is 48 more feet than it s width. THe perimeter of the region is 184feet. what are the dimensions of the region? Write a verbal model that relates the length, the width, and the perimeter. Click here to see answer by checkley71(8403)

 Question 49449: Can someone help me on this problem? I need to solve for x and check my result: -3x = 27 Thanks, Sher Click here to see answer by prabhjyot(164)

 Question 49454: Can someone help me solve this problem? I need to solve for x and check my result: -4(2x-3) = -8x + 5 Thanks, Lyn Click here to see answer by checkley71(8403)

 Question 49451: Can someone help me on this problem? I need to solve for x and check results: 9x + 7 = 5x -3 Thanks, Sher Click here to see answer by checkley71(8403)

 Question 49448: Can someone help me on this problem? I need to solve for x and check my result: 3/7x = 15 Thanks, Sher Click here to see answer by checkley71(8403)