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

Algebra ->  Algebra  -> Inverses -> Questions on Algebra: Inverse operations for addition and multiplication, reciprocals answered by real tutors!      Log On

 Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations! Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

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

 Question 6101: Factor each of the following. 1) a2-9 2) 4a2-4a+1 3) y2+16y+64 4) 81r2 -36rs +4s2 5) x2 +3x+2 6) x2+8x+12 7) 72 - 22x+x2 8) x2 +x-6 9) x2-5x-24 10) 3x2+11x+10 Click here to see answer by Abbey(339)

 Question 6167: how to write algebraic expression? ex; 7 less than 4 times a number 11 more than half a number 5 mmore than the product of a number and 3 1/2 the difference of a number and 15 I had this in my algebra test last month but I can't remember how to do it nor can I find it in my algebra book. Im a mom helping a child tonight but we are stumped. also im stuck on (reciprocals) 9/8, -3y/5, -2.45 and last but not least (solve) -t/12=2/3, 9a-7a=4 ???? thank you in advance for any help you provide Click here to see answer by glabow(165)

 Question 6377: I don't have my book yet and my pretest question asks: Find the inverse of: f(x)= x/4 (x over 4). I have no idea what inverse means pertaining to fractions. Thank you!! Allison Click here to see answer by Mike(39)

 Question 7096: solve 2x - 5 = 5x + 13 Click here to see answer by longjonsilver(2297)

 Question 7402: I am really struggling in math and the book is helping alot because it explanes everything with examples and the problem i am trying to do has no example in the book i am hopeing you can help me solve it or will show me a good example. #110. Find the reciprocal of the number. -12.1/-0.11 All other questions have fractions but this one dosent. thank you - Amy Click here to see answer by bonster(299)

 Question 9077: what is 32% as a reduced fraction? (thank you for the help) Click here to see answer by longjonsilver(2297)

 Question 9080: which of the numbers 51,81,and111 is a composite number? (P.S thank you so very much) Click here to see answer by prabhjyot(164)

 Question 9258: Click on the link to solve this problem: I'm doing the review section in my calculus class, but it's been over two years since i took any math... The problem is to find the inverse of an equation, input a given number and solve. However, the review section on inverse only give simple equations, the ones in the homework are more complex.. find the inverse of: So I made f(x) into "y" and I exhanged it with x so it now looks like I start solving for y This is where I start to get stuck I've factored, but it still leaves a y or I've tried to cube root it, but then I still have a y under the radican I'm stuck.. help please, thank you Click here to see answer by ichudov(499)

 Question 9075: what digit is in the thousands' place in 79,582.3416 (thank you for your help) Click here to see answer by CharStar(110)

 Question 9079: what is the ratio of the number of nickles in a quarter to the number of quarters in a dollar?(thank you for your help) Click here to see answer by bonster(299)

 Question 9076: of the 100students that took math 76, 34 earned A's. What percent of the students earned A's?(thank you for the help) Click here to see answer by bonster(299)

 Question 11975: To whomever answers this question you will need a pencil and paper to draw this problem out! so that you can see exactly what my circle looks like. 1.draw a small round circle. 2.draw a horozontal dine throuhg the middle. 3.put a dot in the middle of the circle. 4.write 4in. over the dot. Now your circle looks exactly like mine. Now here is the question..... Find the circumference of the circle at the right.Now the circle at the right looks like the circle that I just showed you how to draw. And I don't know how to find the circumference of a circle. So can you pleeze help me understand this question? (Oh and the possible answers to this question are .........12.56in, 6.28in, 1,265in, or none of these) Click here to see answer by Earlsdon(6287)

 Question 12339: Im starting out with fourteen now i subtract 4 the Multiply by 7 then i have to make up how much at divide and add Click here to see answer by longjonsilver(2297)

 Question 12815: Is it correct to say the reciprocal of .25 is 1/.25 or do you convert the decimal to a fraction 25/100 and then flip? Click here to see answer by AdolphousC(70)

 Question 12845: Every 5 days Alma rides her skateboard in the park. Every 4 days she bikes to her best friends house. How often does Alma do both? I know this is probably easy but I thought I had the answer right and do not. Thanks for any help offered! Click here to see answer by lilonepaula(1)

 Question 12956: To whomever gets this problem. I know that this is probably in the wrong catagory but I couldn't find the right one. I don't know if you'll know what a function table looks like so here is how you draw the one mine looks like.But first here is the question...Find the misssing number on the function table. And here is how to draw one. 1. Draw a rectangle. 2. Draw a horozontal line going through the rectangle. 3. Draw three lines going up and down to seperate the rectangle into four parts.(In all you should have eight squares.) 4. On the top row you should have X 2 4 5. 5. On the bottom row you should have 2x-3 1 5 ? Here are the answers to my question.....9, 7, 4, or none of these. Thank you for the help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Click here to see answer by longjonsilver(2297)

 Question 13696: -10 + (+3)= The answers are....7, -13, -7, 13. Thank you for the help. Click here to see answer by liltokker(1)

 Question 14074: How do I solve the equation 42 divided by z=7? Click here to see answer by elizabeth2005(20)

 Question 15082: how do i figure out the equation do i add multiply or divide 7n>84 on this math problem there is also a line under the greater than sign but didnt know how to type it that way Click here to see answer by bam878s(77)

 Question 15666: how do i find the inverse of Y=4x and y=x-2 Click here to see answer by venugopalramana(3286)

 Question 15757: I need help with this question 5+7x=26 So far I have 5+7x=26 -5 -5 ________ x=21 Click here to see answer by babygurl08(1)

 Question 17106: I am trying to solve an inverse operation problem using fractions. the problem is 8/11-x=2/11 I must show work, but am having a problem solving the correct way. I know the answere is 6/11, but how am I finding that. I have tried 8/11-x+x=2/11+x 8/11=2/11+x 8/11-2/11=2/11-2/11+x 6/11+x Click here to see answer by rapaljer(4667)

 Question 17065: What is the exact explanation of inverse when used in algebra? For school i need to define the term inverse. Click here to see answer by tjnw79(57)