03/26/15

precalculus honors
Find all complex numbers z such that z^2 = 2i.
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03/25/15

Find sin theta/2
If cos theta = -3/5
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03/25/15

Find cos theta/2
If sin theta= 3/5
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03/25/15

Find cos2x
Given that sin x=-3/5 and angle x lies in quad 3
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03/14/15

arithmetic mean vs. geometric mean
What is the difference between the arithmetic mean and the geometric mean related to statistical analysis of a data set? I'm working on analyzing a data set involving height measurements. My... more
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03/10/15

evaluate cos(inverse)1/2
evaluate arccos1/2.     MY ANSWER: 1.047   HOW MANY SOLUTIONS DOES ARCCOS0 HAVE??   ???   EVALUATE COT{ARCCOS((-15/17))}  WRITE AS FRACTION     THE VALUE ∏/12 IS A SOLUTION FOR... more
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03/10/15

x cos y = 2
Find dy/dx by implicit differentiation
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02/21/15

Please help stuck on solving a system with three equations
0.5a + 0.3b=2.2..1.2c-8.5b=-24.4..3.3c+1.3a=29
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02/18/15

att: Arthur D Illistration how to calculate square root longhand.
For square root of 2  I don't get  the 2____ just below 24     96 and above the 4.00 please explain. Also on the illustration for square root of 7   I get your illustration completely through your... more
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02/17/15

A car and a bus set out at 2pm fromthe same location and are headed in the same direction. after 2 hours, the car is 20 miles ahead of the bus.
The bus is traveling at 45 mph... Please find the rate of the car and provide an explanation.
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02/16/15

how do you solve square root of (x) - square root of (5) =square root of (x-5)
I do not know how to undo the problem by squaring both sides. I keep getting 0=-10 or another untrue statement.  √x - √5 =√(x - 5)    
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02/11/15

Plane figures
hi tutor, me and my daughter confused some home work problems.  Please explain for us each question and the answer thank you very much.   1.  Fran draw a Venn Diagram with two circles and labels... more
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02/06/15

the sum of an angle and three times its complement is 55° more than its supplement. find the measure of the angle
Please help,  I keep getting An answer of 72 using 3 (90-×)=(180-×)+55not sure if this is the correct equation set up. Please help
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01/24/15

Use synthetic division to find the zeros of the function (must show process)
Use synthetic division to find the zeros of the function (must show process)   f(x)= x^3-12x^2+12x+80
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12/15/14

point slope
Write an equation in point slope form and slope intercept form for the line that passed through (-5,-10) and (-9,8).
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12/06/14

use the quadratic formula to solve the equation 2x^2+1=6x
 Use the  quadratic formula to solve the equation 2x ^ 2 + 1 = 6x Im not sure if the answer is 4,-3/2 I worked it out but they keep saying its wrong whats missing
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12/05/14

I need some help simplifying fractions
(7√98) / 98   √98 / 7  
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12/05/14

Business math word problem #%^*
Find the total value of the investment if I invest $6300 at 6% compounded semiannually for 2 years. 
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12/03/14

Find the zeros of f(x), and state the multiplicity of each zero.
Find the zeros of f(x), and state the multiplicity of each zero. (Order your answers from smallest to largest x.)   f(x) = 9x5 + 42x4 + 49x3   x = __ with multiplicity __ x = __ with... more
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11/26/14

Solve the system of equations write answer an an ordered triple in the form (x,y,z)
x-y-z=4 2x+3y=Z over 4 6y=2z      p.s i cannot find the symbol I need on the left hand side of the problem it looks like {
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11/21/14

how long after the ball is thrown will it strike the ground?
a ball is thrown downward from the top of a 150 foot building with the initial velocity of 10 feet per second. the height of the ball h after t seconds is given by the equation h=-16t^2-10t+150.... more
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11/16/14

Midpoints of the sides
Use Triangle GHJ where A, B, and C are midpoints of the sides.   If AB= 3x+8 adn GJ= 2x+24, what is AB?   If AC= 3y-5 amd HJ = 4y+2, what is HB?    Id GH = 7z-1 and BC= 4z-3, what is GH? 
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11/13/14

Richter Scale
Oklahoma has been experiencing an increase in earthquakes over the last few years. What was the magnitude on the Richter Scale, R=log(I/I_o), of the following two earthquakes occurring in the... more
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11/10/14

The sum of the reciprocals of 2 consecutive integers is 9/20. Find the numbers.
The sum of the reciprocals of 2 consecutive integers is 9/20. Find the numbers.
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11/05/14

How do I answer this trig identity?
ln|1+cos(theta)|+ln|1-cos(theta)| = 2ln|sin(theta)|
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