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Tutors Answer Your Questions about Complex numbers (FREE)
Question 149761: Please can someone help me with this problem: For i= -1, 3i(2+5i)= x+6i,then x=?
This is how i tried to solve the problem: 3ix2=6i,and 3ix5i=15i,now i combine 6i+ 15i = x + 6i, I broke down the problem by adding 6i + 15i= 21i=x+6i, then i made the 21i negative on both sides:
21i = x + 6i
-21i -21i= -15, is this correct?
Click here to see answer by ankor@dixie-net.com(6693)   |
Question 149761: Please can someone help me with this problem: For i= -1, 3i(2+5i)= x+6i,then x=?
This is how i tried to solve the problem: 3ix2=6i,and 3ix5i=15i,now i combine 6i+ 15i = x + 6i, I broke down the problem by adding 6i + 15i= 21i=x+6i, then i made the 21i negative on both sides:
21i = x + 6i
-21i -21i= -15, is this correct?
Click here to see answer by kmcruz09(38)  |
Question 149761: Please can someone help me with this problem: For i= -1, 3i(2+5i)= x+6i,then x=?
This is how i tried to solve the problem: 3ix2=6i,and 3ix5i=15i,now i combine 6i+ 15i = x + 6i, I broke down the problem by adding 6i + 15i= 21i=x+6i, then i made the 21i negative on both sides:
21i = x + 6i
-21i -21i= -15, is this correct?
Click here to see answer by ayman11(2) |
Question 151967: 1. Using one of the laws of exponents, prove that any number raised to the power 0 is 1.
2. Using FOIL, simplify the expression "(3x + 2)(3x - 2)". Show that a particular factoring formula leads to the same answer.
3. If a fourth-degree polynomial is multiplied by a third-degree polynomial, what is the degree of the product? Explain your reasoning and provide examples to support your explanation.
4. Think of a condition under which the product of any two binomials is a binomial. You can support your answer with the help of one of the identities of factorization of polynomials.
5. (i) Is "12.5555…" a rational or irrational number? Explain.
(ii) Is "2.1273685…" a rational or irrational number? Explain.
(iii) Is "548/799" a rational or irrational number? Explain.
(iv) Simplify "(5 + 3i)(5 - 3i)". Is the result real, complex, or both? Explain.
Click here to see answer by stanbon(26291) |
Question 153590: ..What is the total length of 32 pieces of copper wire, if each piece is 2 3/16 inches long?
... A women worked 7 1/2 hours per day for 14 days how many hours did she work?
.... Five and one-fourth dollars are to be divided among three boys. How many dollars will each receive?
.....Three hundred fifty pounds of sugar were poured into 4 3/8 pound packages. How many packages were filled?
0 solutions
Click here to see answer by ankor@dixie-net.com(6693) |
Question 154905: really I need help with classifying numbers it just didnt show it Idont understand were negative .75 would be classified as. I am not for sure if it is classified as a real raionl number and a integer or just a real and irrational number. please explain not just answer the questin because i need serious help I am so confused
Click here to see answer by stanbon(26291) |
Question 158029This question is from textbook
: Hello =)
I really need help with this problem! If you could help me out that would be great!
DIRECTIONS: write the complex number is standard form
I hope i wrote that right. It's the quantity the squareroot of 2 over 2 plus the squareroot of 2 over 2 times i to the 4th power. I know how to solve it I think but I dont know how to put it in standard form??
Help me out please! Thank you!!!This question is from textbook
Click here to see answer by jim_thompson5910(13794) |
Question 159315: Jambalaya is a Cajun dish made from chicken, sausage, and rice. Simone is making a large pot of jambalaya for a party. Chicken costs $6 per pound, sausage costs $3 per pound, and rice costs $1 per pound. She spends $42 on 13.5 pounds of food. She buys twice as much rice as sausage. How much chicken, sausage, and rice will she use in her dish?
Can someone please show me how to make this into 3 algebraic equations. I should be good from there. I would really appreciate it.
Click here to see answer by scott8148(3382)  |
Question 159314: Jonathon and members of his Spanish Club are going to Costa Rica over spring break. Before his trip, he purchases 10 travelers checks in denominations of $20, $50, and $100, totaling $370. He has twice as many $20 checks as $50 checks. How many of each type of denomination of travelers checks does he have?
I do not understand how to make this into 3 algebraic equations. If someone could just ezplain that, i would appreciate that.
Click here to see answer by scott8148(3382) |
Question 159310: Campus Rentals rents 2 and 3 bedroom apartments for $700 and $900 per month respectively. Last month they had six vacant apartments and reported $4600 in lost rent. How many of each type of apartment were vacant?
Can someone please explain to me how to make this into equations?
Click here to see answer by scott8148(3382) |
Question 159623: A food store makes a 9-lb mixture of peanuts, cashews, and raisins. Peanuts cost $1.50 per pound, cashews cost $2.00 per pound, and raisins cost $1.00 per pound. The mixture calls for twice as much peanuts than cashews. The total cost of the mixture is $13.00. How much of each ingredient did the store use?
I am really confused with this problem.
Click here to see answer by scott8148(3382) |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980
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