Questions on Algebra: Operations with Signed Numbers answered by real tutors!

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 Algebra: Operations with Signed Numbers Solvers Lessons Answers archive Quiz In Depth

 Question 748379: Complete the ordered pair ( , 30) so that it is a solution to the equation: 4x + 2y = 120 Please help Click here to see answer by tommyt3rd(614)

 Question 651192: 3|2x+5|=9x-6 Click here to see answer by tommyt3rd(614)

 Question 714234: (x^3-3x^2+3x-1)×(x^3-2x^2) Click here to see answer by tommyt3rd(614)

 Question 583610: need help, directions say to simplify, not factoring (3x^2+11x-4)/(6x^2+7x-3) * (4x^2-9)/(x^2-16) thanks! Click here to see answer by tommyt3rd(614)

 Question 672066: I have to know how to enter this problem into a calculator properly: 5(67/39)-35*7 What is the answer and how if you have time how to enter into a calculator properly. Thank you Click here to see answer by tommyt3rd(614)

 Question 640180: what is a verbal expression for (5m)^2+2 Click here to see answer by tommyt3rd(614)

 Question 646796: how do you solve problems like 12(2/3)? Click here to see answer by tommyt3rd(614)

 Question 587635: y=2x−2 into a+b=c format Click here to see answer by tommyt3rd(614)

 Question 594886: How do I find V'(t) from equation below... V(t)=30 - 15(t^2) / (t+3)^2 Click here to see answer by tommyt3rd(614)

 Question 595642: How do I differentiate this equation? I think I am suppose to use the quotient rule here..but I am not sure how to apply it...Thanks! V(t) = 30 - 15t^2 / (t+3)^2 Click here to see answer by tommyt3rd(614)

 Question 597520: Express the following expression in the form of a + bi: (9 + 14i) ((6 – 5i) + (3 - 4i)) Click here to see answer by tommyt3rd(614)

 Question 598451: What is the nth term of the arithmetic sequence a[7]=34, a[18]=122? Click here to see answer by tommyt3rd(614)

 Question 609131: Perform the operation. 8r^3s^2 + 6/rs^4 Click here to see answer by tommyt3rd(614)

 Question 748333: Slove: 12x^2-6x=0 Click here to see answer by tommyt3rd(614)

 Question 613432: -3(-2 - 6 x 2) - [4(2 - 4) - 2] Click here to see answer by tommyt3rd(614)

 Question 651087: If somebody could please help me on a college algebra problem. I need to simplify this problem : 5/6*(2/3-1/6)+7/18 I started out by reducting it to (4/6 - 1/6) 5/6*3/6+7/8 than somehow got 15/6+7/8 but than i got stuck. So could somebody please help me and show me how to do this? That'd be great. Thank you! :) Click here to see answer by tommyt3rd(614)

 Question 680402: D=36+5.8x Click here to see answer by tommyt3rd(614)

 Question 713565: How do i factorise the below (a+2)(2a)+7a+14 and 64x^2+80xy+25y^2 Thanks. Click here to see answer by tommyt3rd(614)

 Question 716100: 3+3 x 3-3+3= ? Click here to see answer by tommyt3rd(614)

 Question 689586: 4x + 5y = ? x=6,y=17 Click here to see answer by tommyt3rd(614)

 Question 719079: 91,92,93,94,880,960,975,977, ----,----.??? Click here to see answer by tommyt3rd(614)

 Question 639963: mr. bailey purchased some groceries that cost d dollars. he paid with a \$50 bill. write an expression for the amount of the change he will receive Click here to see answer by tommyt3rd(614)

 Question 746310: If 2x+3y=24 and 2x-3y=12 then value of xy is_____________ Click here to see answer by mananth(12270)
 Question 746310: If 2x+3y=24 and 2x-3y=12 then value of xy is_____________ Click here to see answer by Cromlix(353)

 Question 617695: Solve for b: (1/b) - (b/(b-1)) = 2 Click here to see answer by tommyt3rd(614)

 Question 730564: If tan θ= -3 and cos θ<0, then tan θ/2=? Click here to see answer by tommyt3rd(614)

 Question 675803: How I write a second inequality with the same meaning: x<5 Click here to see answer by tommyt3rd(614)

 Question 653590: How is (-2) squared different from -2 squared Click here to see answer by tommyt3rd(614)

 Question 704940: Evaluate each express for x=16 and y=4 3x-3y Click here to see answer by tommyt3rd(614)

 Question 715693: (-25) - (-21) = ? Click here to see answer by tommyt3rd(614)

 Question 740688: what is the answer to 53-[3(8+2)+5(9-5)] Click here to see answer by tommyt3rd(614)

 Question 744711: I am calculating angles and must figure out cosine to the power of -1. I know what square root is etc., but how do you calculate to a minus power? Click here to see answer by josgarithmetic(1540)

 Question 743682: I need to make the following equation true by adding 2 pairs of brackets 5+7*3-2*9=72 Click here to see answer by pfongk(1)

 Question 742454: Hello I am just starting back to school and it has been a long time since I've had to do any math problems, let alone Pre-Algebra. I am learning to perform the Order of Operations. I am using the P,E,M,D,A,S method. My problem is... (-36 / 6) - (4 / 4) so far I have this -36 4____ But should'nt 4/4=1, -36/6=6 or = to 1 6 4 Click here to see answer by Alan3354(30993)

 Question 741501: -1+9(-7g-9) Click here to see answer by jim_thompson5910(28598)

 Question 736330: 2[3 - 5(3 - 1)²] Click here to see answer by rfer(12677)

 Question 736300: I am dealing with adding signed number. for example: -10+(-7) can u help me. Click here to see answer by jim_thompson5910(28598)

 Question 735915: (-4+6)[(-8)+(-7)-(-10)] I am not sure how to solve this problem. Click here to see answer by rfer(12677)

 Question 731341: help me perform indicated operations -8[4+(-2+7)] _______________ -3[4-(-9)]-3(-9) thank you, Debbie Espimom1@aol.com Click here to see answer by josgarithmetic(1540)

 Question 730116: find how long it takes a person to drive 135 miles if she drives on cruise control set at 60 mph. Click here to see answer by Alan3354(30993)

 Question 730029: i need to solve for X: x/a+x/b=1 it's x over a plus x over b = 1, someone just provided the answer and that does not help. i need to see how you actually arrived at the answer. Click here to see answer by lynnlo(4164)

 Question 730021: i need to solve for X: x/a+x/b=1 it's x over a plus x over b = 1 Click here to see answer by lynnlo(4164)

 Question 728633: 1/14+18/x=? I need to know how to do a problem like this Click here to see answer by josmiceli(9697)

 Question 726475: 21<6u Click here to see answer by lenny460(778)

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