# Questions on Algebra: Complex Numbers answered by real tutors!

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 Algebra: Complex Numbers Solvers Lessons Answers archive Quiz In Depth

 Question 264155: 81x^2 -4y^2 divided by 9x^2 - 25xy - 6y^2 Click here to see answer by checkley77(12569)

 Question 265248: how do you solve for x and y with the imaginary numbers? Click here to see answer by drk(1908)

 Question 265289: How to set up the problem when finding the quotient of two complex numbers? Click here to see answer by stanbon(57342)

 Question 265496: I am doing a practice exam for my GRE and I am stumped on this type of problem. Can you help? 3. Jim can fill a pool carrying buckets of water in 30 minutes. Sue can do the same job in 45 minutes. Tony can do the same job in 1 ½ hours. How quickly can all three fill the pool together? A. 12 minutes B. 15 minutes C. 21 minutes D. 23 minutes E. 28 minutes Click here to see answer by Theo(3464)

 Question 265623: How do you find the modulus of z= 3/(5+7i) ? I am asked to find the modulus and Arg(z), but I cannot figure out what x & y are for |z|=sqrt(x^2+y^2) (the modulus). Thanks! Click here to see answer by Alan3354(30993)

 Question 265688: What is the square root of 550x over 49? Click here to see answer by solver91311(16885)

 Question 265771: how do i show that 3+2i; 3-2i/13 is multiplicative inverse of one another? Click here to see answer by Edwin McCravy(8909)

 Question 265813: Can you explain what the i in a complex number stands for and why it is necessary in some problems? Also, can you explain the procedures of completing the square of a quadratic equation Click here to see answer by stanbon(57342)

 Question 265950: What is 7+ 4i divided by 9 - 3i? Click here to see answer by drk(1908)
 Question 265950: What is 7+ 4i divided by 9 - 3i? Click here to see answer by Alan3354(30993)

 Question 266129: If [{modulus of(z-i)}/{modulus of(z+i)}]=1 and iz=k. Then find k. Click here to see answer by Alan3354(30993)

 Question 266199: I have 2 question i have answered both but am not confident with the answers. (2+3i)(x+yi)=23+2i find values for x and y. express root 2 cis (5pi/4) in cartesian form. Thak you for your help. Click here to see answer by stanbon(57342)

 Question 266600: how to solve with Given that (x+iy)/(2-i) , find x and y. Click here to see answer by drk(1908)

 Question 267513: You are playing paintball with a friend who is standing 15 meters away from you. You shoot at her and miss. The paintball has a horizontal velocity of 150 meters per second. Which of the following sequences describes the distances of the ball from you, in meters, at one-tenth second intervals, starting when it swooshes by her? Click here to see answer by stanbon(57342)

 Question 268448: 10x + y - (10x + y) + 7 Click here to see answer by drk(1908)

 Question 269096: how do you do i+(11-5i) write the expression as a complex number in standard form. i am not sure but i think you do -i to the -5i so you get (11-6i)? am i correct? or if i am wrong please show me how to please? Click here to see answer by jim_thompson5910(28595)

 Question 270260: Perform the operation and write the result in standard form. (7 + i) + (-10 + 5i) Click here to see answer by jim_thompson5910(28595)
 Question 270260: Perform the operation and write the result in standard form. (7 + i) + (-10 + 5i) Click here to see answer by Alan3354(30993)

 Question 270282: what is 3h-5h+11=17 and what is 7g+14-5g=-8 and what is 4=0.4(3d-5) abd what is 2/3g+1/2g=14 Click here to see answer by jim_thompson5910(28595)
 Question 270282: what is 3h-5h+11=17 and what is 7g+14-5g=-8 and what is 4=0.4(3d-5) abd what is 2/3g+1/2g=14 Click here to see answer by rfer(12657)

 Question 272850: How can I write the expression as a logarithm of a single quantity for the following exercise. 1/2ln(x)+4ln(y)-3ln(z) Thanks, Leidy Click here to see answer by jim_thompson5910(28595)

 Question 273148: how do you write the problem 3i(2-3i) in a+bi form? Click here to see answer by edjones(7569)
 Question 273148: how do you write the problem 3i(2-3i) in a+bi form? Click here to see answer by solver91311(16885)