# Questions on Algebra: Real numbers, Irrational numbers, etc answered by real tutors!

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 Algebra: Real numbers, Irrational numbers, etc Solvers Lessons Answers archive Quiz In Depth

 Question 131031: I have been having trouble with this question and I am not sure how to answer it, but it says I have to use the 5-step method to solve it. The question is: one-third of a number is 5 less than half of the same number. What is the number? Please help me Thank You=) Click here to see answer by pug912(10)

 Question 131029: This particular question asks to simplify. What I got for this was xy^1, I don't know where I went wrong, but the problem is: x^2y^3. Please and Thank you=) Click here to see answer by MathLover1(6628)

 Question 131482: I need help! For this particular question it asks: Solve by whatever method seems easiest to you. Leave answers in simplest radical form. The problem is x^2+8x=-16 I tried solving this problem, by solving it two diffrent ways, so I got two answers: 31 - - 1616 Please help Thank You=) Click here to see answer by benni1013(197)

 Question 131946: could someone please help me with this problem? (3-i) / (1+i) I know you use the conjugate and multiply by (3-i) / (1+I) I think,but I don't think I did something right.Thanks for your help in advance. Sincerely,LH Click here to see answer by ptaylor(2048)
 Question 131946: could someone please help me with this problem? (3-i) / (1+i) I know you use the conjugate and multiply by (3-i) / (1+I) I think,but I don't think I did something right.Thanks for your help in advance. Sincerely,LH Click here to see answer by stanbon(57337)

 Question 131945: could someone please help me with this problem? (3-i) / (1+i) I know you use the conjugate and multiply by (3-i) / (1+I) I think,but I don't think I did something right.Thanks for your help in advance. Sincerely,LH Click here to see answer by solver91311(16877)

 Question 132130: I would really appreciate some help solving two problems.Thank you in advance for taking the time to help me.On these problems it says to write each answer in the form a + bi. 1) (6-i)(3+2i) 2)3i(6+4i) Click here to see answer by josmiceli(9674)
 Question 132130: I would really appreciate some help solving two problems.Thank you in advance for taking the time to help me.On these problems it says to write each answer in the form a + bi. 1) (6-i)(3+2i) 2)3i(6+4i) Click here to see answer by nycsharkman(136)

 Question 132372: I need help on a couple questions? These are multiple choice. A basketball drops from a height of 76 in. On bounce 1 it rebounds to a height of 38 in. On bounce 2 it rebounds to a height of 19 in. How high does the basketball bounce on bounce 3? a. 9 in. B. 19 in. C. 9.5 in. D 4.75 in. Write a rule for the pattern: -3,-9,-14, -42,-47,-141.....????? Please HELP!!!!! Click here to see answer by oscargut(891)

 Question 132381: Simply the following expression: Assume that a and b are positive real numbers and m and n are rational numbers Click here to see answer by solver91311(16877)

 Question 132402: I have 2 questions I can't figure out! These are multiple choice. Which equation is not equivalent to the others? A. 4x=12 B. 12=x C. 4x/4=12 D. x/4=12 Which expression has a value of 21 A. (5+4)*5+15/5 B. 5+(4*5+15)/5 C. 5+4*(5+15)/5 Click here to see answer by solver91311(16877)

 Question 133054: For what values of k will the equation kx^2+(k-2)x+4k=0 have no real soloutions? Click here to see answer by vleith(2825)

 Question 133681: What values of x may not be used in the expression ((x+5)/(x^2-4))? I am completely clueless on this stuff it confuses me! Thanks Click here to see answer by scott8148(6628)
 Question 133681: What values of x may not be used in the expression ((x+5)/(x^2-4))? I am completely clueless on this stuff it confuses me! Thanks Click here to see answer by jim_thompson5910(28593)

 Question 135491: INDICATE WHETHER THE EQUATION HAS NO SOLUTION OR IS TRUE FOR ALL REAL NUMBERS. IF NIETHER IS THE CASE, SOLVE FOR THE VARIABLE. 18x-3(3+6x)=-9 Click here to see answer by cbcrawford978(7)

 Question 135490: INDICATE WHETHER THE EQUATION HAS NO SOLUTION OR IS TRUE FOR ALL REAL NUMBERS. IF NIETHER IS THE CASE, SOLVE FOR THE VARIABLE. 10x-2(4+5x)=8 Click here to see answer by cbcrawford978(7)

 Question 136928: I am not sure what topic this is in so I can't find any examples. Please help. This is on empty set and I know that an empty set is empty. I just can't remember if that is whole numbers or can it be decimals and fractions too? So the question is True or False The set of numbers less than 0 but greater than 1 is the empty set. I said true because in between 0 and 1 is empty if it is whole numbers. IS that right? Click here to see answer by vleith(2825)

 Question 139311: Could I please have some help solving this problem. Thank you. x varies directly with y and inversely with z. x=0.25 when y=10 and z=20. find x when y=20 and z=10. Thank you... Click here to see answer by stanbon(57337)

 Question 139309: I have a problem that I could use some help understanding how to solve/answer from a homework sheet. x varies directly with y and inversely with z. x=20 when y=8 and z=4. Find x when y=4 and z=8. Thank you Click here to see answer by vleith(2825)

 Question 139386: Find two consecutive even integers whose product is 224. Click here to see answer by scott8148(6628)

 Question 140860: could you tell me which ones of these are integers? some of them have a square root sign and I don't know how to make that on the computer so I'll do my best. -12, square root 7, -7/3, square root 8 with a little 3 at the top, 0, 9, 4 2/3, square root 25, -square root 14, square root 5 with a little 5 at the top,square root 4 with a little 3 at the top,5/7 If you could also tell me why they are integers,that would help me alot.Thank you in advance for your help,because I'm an older student and I have found it harder to go back to school in your late thirties,but I know it will be worth it. Have a great day! Elle Click here to see answer by solver91311(16877)

 Question 141476: Please help me….my daughter needs to solve the equation below and I have gotten very rusty with my Algebra…Thank you so much “/” means divide 3(x+5)/6= x+1 Thank you again Click here to see answer by jojo14344(1512)

 Question 142477: The longer leg of a right triangle is 6 cm longer than 6 times the shorter leg and also 1 cm shorter and the hypotenuse. Find the perimeter of the triangle. Click here to see answer by scott8148(6628)

 Question 143153: The set of real numbersless than or equal to -4? Which of the integers has an absolute value greater than 1? Click here to see answer by vleith(2825)

 Question 143519: Definition: If y is a real number, then y to 1st power = _________________ Click here to see answer by nabla(475)

 Question 143552: find the rational number halfway between 5/16 and 7/8 Click here to see answer by jim_thompson5910(28593)

 Question 143565: What is the different between rational numbers and inrational numbers Click here to see answer by stanbon(57337)
 Question 143565: What is the different between rational numbers and inrational numbers Click here to see answer by solver91311(16877)

 Question 144031: Hi I'm having some trouble with this problem, we have to divide this algebraic expression. If you can provide me with some help I would appreciate it. Thanks. (2x^3 - x^2 + 3x -1) ÷ (x + 2) Click here to see answer by stanbon(57337)

 Question 144104: hii. i have something to ask. can you you define what is real numbers.? also with the properties of real numbers.,? thank you :) Click here to see answer by nabla(475)

 Question 144458: PROBLEM: LET f(x)=3x^2-2x+1. FIND THE FOLLOWING: f(2) *** IN THIS MY TEACHER SAYS THE ANSWER IS 9... BUT IT SEEMS EVERYTIME I WORK IT OUT I COME UP WITH 7... PLEASE HELP AND EXPLAIN WHAT I AM DOING WRONG STEP BY STEP... THANKS :) Click here to see answer by Alan3354(30993)

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