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Tutors Answer Your Questions about Complex Numbers (FREE)
Question 54028This question is from textbook
: Victor earns $3 an hour working after school and $4 an hour working on saturdays. Last week he earned $43, working a total of 13h. How many hours did he work on saturday?This question is from textbook
Click here to see answer by Nate(3495)   |
Question 54028This question is from textbook
: Victor earns $3 an hour working after school and $4 an hour working on saturdays. Last week he earned $43, working a total of 13h. How many hours did he work on saturday?This question is from textbook
Click here to see answer by anumeha(1) |
Question 54202: It's been a long time since I've done algebra....I'm a 43 yr old Dad...trying to help my 15 yr old daughter with homework (she's gone right now) explain to me if you please how to solve this equation:
2x - 5y =9
y = 3X - 7
Thanks for your help in advance.....Don Gillis
Click here to see answer by Nate(3495) |
Question 54880: If I invest $25,000 in two different stocks. One earns 6.5% and the other earns 7.00%. If the total interest earnings for one year is 1683.75, how much is invested in each stock?
Stock X = ? = 6.5% interest
Stock Y = ? = 7.0% interest
Total = $25,000 = 1,683.75 Total interest
Please show me how to solve this problem.
Click here to see answer by stanbon(26259) |
Question 54880: If I invest $25,000 in two different stocks. One earns 6.5% and the other earns 7.00%. If the total interest earnings for one year is 1683.75, how much is invested in each stock?
Stock X = ? = 6.5% interest
Stock Y = ? = 7.0% interest
Total = $25,000 = 1,683.75 Total interest
Please show me how to solve this problem.
Click here to see answer by tutorcecilia(2042) |
Question 54842: WORD PROBLEM:
Two chemical plants are polluting a river. If plant A produces a predetermined maximum amount of pollutant twice as fast as B, and together they produce the maximum pollutant in 26 hours, how long will it take Plant B alone?
PLEASE HELP!!
Click here to see answer by stanbon(26259) |
Question 54844: This is the last problem I have to do. . .
A boat is being pulled into a dock with a rope attached to the boat at water level. When the boat is 12 feet from the dock the length of the rope from the boat to the dock is 3ft longer than twice the height of the dock above the water. Find the height of the dock.
Please Help me!
Click here to see answer by wgomero(28) |
Question 55233This question is from textbook 
: 2+5/2+7/12+9/2to the power 2+12/12to the power 2+13/2 to the power 3+19/12 to the power 3+17 to the power 4
which of the following is true
10
9
11
12
This question is from textbook
Click here to see answer by rainy(2) |
Question 55404This question is from textbook
: Becky has as many dimes as Ryan and Amy have together. Ryan has 2 more dimes than Amy, and Amy has one-third as many dimes as Becky has. How many dimes does each have?This question is from textbook
Click here to see answer by Cintchr(475) |
Question 55407This question is from textbook
: A bank contains 36 nickels, dimes, and quarters. There are 4 more dimes than quarters and twice as many nickels as quarters. How many of each coin are in the bank?This question is from textbook
Click here to see answer by Cintchr(475) |
Question 55816: Could someone please tell me if all the following are correct?
If not which ones do I have wrong? -
Rational numbers are defined to be those which can be expressed as a ratio of integers.
The number pi is an integer.
For all real numbers x, | x | = x.
The number 3i is greater than 2i.
The equation 2 – (3 – 4) = (2 – 3) – 4 illustrates the associative property of subtraction.
Zero is a complex number.
The number 8M is even for all real numbers M.
The number zero is both positive and negative.
The number .1919191919… is a rational number.
Click here to see answer by stanbon(26259) |
Question 56002: A constant voltage is applied to a circuit that has a variable resistor. The current varies inverseley as the resistance. At a resistance of 6 ohms, the current is 10 amperes. Find the current when the resistance is 12 ohms.
Click here to see answer by stanbon(26259) |
Question 56685: hai
i am doing B.Sc(maths) Ist year at madurai kamaraj university in correspondence.
this question is from trigonometry, complex numbers
find the modulus and amplidude form of (1-i)(1-2i)/(1+3i)
i have tried this one
(1-i)(1-2i)/(1+3i) = (1-i)(1-2i)(1+3i)/(1-3i)(1+3i)(multiplyingnumerator & dinominator by the conjugate)
=(8+6i^3)/10
(1-i)(1-2i)/(1+3i) =(4-3i)/5
r=square root(x^2+y^2)
=square root ((4/5)^2+(-3/5)^2)
r=square root (1)
cos theta=x/r
=4/5 square root (1)
sin theta=y/r
=-3/5 square root(1)
Click here to see answer by venugopalramana(3286)  |
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