Homework Help

Math

2i-(2+3i)+(1-8i)Write the expression as a complex number in standard form

Posted by t521863 on December 13, 2011 at 10:55 AM via web. 1 educator answer.

Math

Find the integral of  sin x / cos x

Posted by shayaan on December 13, 2011 at 10:15 AM via web. 1 educator answer.

Math

SOLVING MATRICES:show the steps please:)[-1 2] [x] = [-6][3  4] [y]     [8]

Posted by elitaboobooface on December 13, 2011 at 9:36 AM via web. 1 educator answer.

Math

solve the equations {y=8/x {y=x^2solve with either linear combination, subsitution or a matrix. please show the...

Posted by elitaboobooface on December 13, 2011 at 9:29 AM via web. 1 educator answer.

Math

Mary says that the greater the number of counters, the greater the number of different arrays you can form....

Posted by jkibbe on December 13, 2011 at 9:24 AM via web. 1 educator answer.

Math

How do I solve this system of linear equations? (m-n)/5 + (m+n)/2 = 20 (m-n)/2 - (m+n)/4 = 8Solve the system by...

Posted by ninoj90 on December 13, 2011 at 9:14 AM via web. 1 educator answer.

Math

If f(x)= px+q and f(f(f(x)))=8x+21 and if p and q are real #'s, then p+q equals  Options : A) 2 B) 3 C) 5 D) 7...

Posted by rock-star790 on December 13, 2011 at 9:01 AM via web. 1 educator answer.

Math

Find the x-values of all points where the curve y=9x^3-9x^2-9x+7  has a horizontal tangent

Posted by marirosa on December 13, 2011 at 9:01 AM via web. 1 educator answer.

Math

Can someone help me figure this question on functions and using transformations?Use transformations to graph the...

Posted by deekoch on December 13, 2011 at 8:49 AM via web. 1 educator answer.

Math

how to graph an equation like 3y+9>20

Posted by smartypants777 on December 13, 2011 at 7:25 AM via web. 1 educator answer.

Math

solve sin2y=cos4y for y, where 0<y<360 degrees. Hint: cos4y=cos(2y+2y)

Posted by samlaw9 on December 13, 2011 at 4:38 AM via web. 1 educator answer.

Math

Identify the base function and describe the transformation(s) for f(x) = -4*(3x)^2 + 5

Posted by peuco7 on December 13, 2011 at 12:40 AM via web. 1 educator answer.

Math

cos x-sin 3x-cos 2x = 0

Posted by bhartendu on December 12, 2011 at 7:52 PM via web. 1 educator answer.

Math

explain logarithms ?

Posted by eighmard on December 12, 2011 at 6:19 PM via web. 1 educator answer.

Math

This partial derivative. f(x,y)=(e^x)(y^2). How to solve (∂/∂y),(∂/∂x)?

Posted by danibae91 on December 12, 2011 at 3:25 PM via web. 1 educator answer.

Math

How do you construct a common internal tangent to two circles?

Posted by betmullins on December 12, 2011 at 1:34 PM via web. 1 educator answer.

Math

Solve, `11sin^2 y = 13-3sin^2 y`  for y, where 0 < y < 360 degrees. how many angles satisfy this...

Posted by samlaw9 on December 12, 2011 at 11:25 AM via web. 1 educator answer.

Math

Solve the following for x, where 0<x<2pi. `2tanx + sqrt12 = 0` ``

Posted by samlaw9 on December 12, 2011 at 11:22 AM via web. 1 educator answer.

Math

Determine how many times a ball has to bounce after which the height of the ball is 10% of the initial height.

Posted by topgun13 on December 12, 2011 at 11:13 AM via web. 1 educator answer.

Math

Determine the value of x given that x + 2 = 12  

Posted by dre12 on December 12, 2011 at 11:11 AM via web. 1 educator answer.

Math

Solve the integral of x^5*(4+x^6)^3 dx  

Posted by alittleashley on December 12, 2011 at 9:40 AM via web. 1 educator answer.

Math

family A B C D E F G H I J income 50 80 100 80 80 120 70 100 60 90 amount of life insurence 120 200 220 160 180...

Posted by lhz9194 on December 12, 2011 at 8:50 AM via web. Be the first to answer.

Math

3x+5y+4=13 5x+2y+3z=-9 6x+3y+4z=-8   

Posted by briaalexissimmons on December 12, 2011 at 8:47 AM via web. 1 educator answer.

Math

How do you determine a equation from a expoential function graph ? Please explain by using a basic graph with a...

Posted by nhl123 on December 12, 2011 at 8:20 AM via web. 1 educator answer.

Math

There are 2 major roads from city X to city Y and 4 major roads from city Y to city Z. How many different trips...

Posted by brandihilton on December 12, 2011 at 6:41 AM via web. 1 educator answer.

Math

What does 'infinite discontinuity' mean?Context: "In the function 1/[(x+3)(x-2)], there is are infinite...

Posted by argonaut on December 12, 2011 at 6:22 AM via web. 1 educator answer.

Math

 Use the equation twice to find cos(15) if it known that cos(60)=0.5

Posted by creations on December 12, 2011 at 6:01 AM via web. 1 educator answer.

Math

Find the local extrema of f(x) = x^2/3(x^2-8). Sketch the graph of f(x)

Posted by loeywifey on December 12, 2011 at 5:35 AM via web. 1 educator answer.

Math

Find the value of "a" if the points are the indicated distances apart. (2,a) and (-3,-2) when d = the square...

Posted by tipha on December 12, 2011 at 3:40 AM via web. 1 educator answer.

Math

Show that f(x+y)=f(y)+f(x) if f(x+y+a)=f(x)+f(y)+f(a).a,x,y are from real set.

Posted by home1h on December 12, 2011 at 2:08 AM via web. 1 educator answer.

Math

Solve equation for real solution x^3-1=0

Posted by indiraa on December 12, 2011 at 1:45 AM via web. 1 educator answer.

Math

Find the area of the region in the first quadrant bounded by the line y=8x, the line x=1, the curve y=1/sqrt(x),...

Posted by dylachan on December 12, 2011 at 12:51 AM via web. 1 educator answer.

Math

Determine if the following expressions are equivalent: f(x)=6x^2+7x-3/2x+3 and g(x)=3x(3x+1)-(1+9x^2)

Posted by peuco7 on December 12, 2011 at 12:37 AM via web. 1 educator answer.

Math

Find dy/dx for `y = (3x - 1)*sqrt x`

Posted by dstell77 on December 11, 2011 at 11:22 PM via web. 2 educator answers.

Math

Write the equation of the line that passes through the point (1,3) and perpendicular to 2x+3y+5=0

Posted by mcoach222 on December 11, 2011 at 11:20 PM via web. 1 educator answer.

Math

what is the period of the function y=tan(x/2)?

Posted by samlaw9 on December 11, 2011 at 5:27 PM via web. 1 educator answer.

Math

Interest accrued on bank deposits but not received tk. 200  (Bank interest rec 1340 on chart)  What will be...

Posted by matrix2507 on December 11, 2011 at 3:20 PM via web. Be the first to answer.

Math

How do i solve 4{[4(x-1)+8]-[2(2x-1)+8]} ?

Posted by erin826 on December 11, 2011 at 12:30 PM via web. 1 educator answer.

Math

Prove: 2sinx+sin2x=(2sin^3x)/(1-cosx)  You can only change one side of the equation. Please help! I don't...

Posted by tryingtohideit on December 11, 2011 at 11:32 AM via web. 1 educator answer.

Math

Write a sinusoidal equation that relates the time the sun rises to the day of the year in the following case.The...

Posted by samlaw9 on December 11, 2011 at 11:13 AM via web. 1 educator answer.

Math

What is the formula for the nth term in the sequence 1,4,10,19,31..  Lets say I want to proof for the 5th term...

Posted by taramf on December 11, 2011 at 9:42 AM via web. 3 educator answers.

Math

Determine one positive and one negative coterminal angle for -200.Trigonometric functions

Posted by samlaw9 on December 11, 2011 at 9:28 AM via web. 1 educator answer.

Math

Evaluate ∫f(xy)ds f(xy)=(x^2)(y^3)dy if C is the arc of the curve  from (-1,1) to (8,2)

Posted by rmyot001 on December 11, 2011 at 6:40 AM via web. 1 educator answer.

Math

`2*((x-1)/(2))^(2)+5*((x-1)/(2))-12=0` ``I need help solving the steps of this equation. The back of my book...

Posted by ara513 on December 11, 2011 at 6:36 AM via web. 1 educator answer.

Math

Can you measure your arm span and height?I need to collect results for a math project, could you record your arm...

Posted by link-from-the-void on December 11, 2011 at 4:14 AM via web. Be the first to answer.

Math

Let A and B by nonempty sets and let aRb iff f(a)=f(b). Prove that for all a in A, [a]=f^-1(f({a})).The...

Posted by angmarie90 on December 11, 2011 at 3:36 AM via web. Be the first to answer.

Math

Let f(x,y) = 2xy, and let C be the arc of the curve y = x^2 from (-1,1) to (2,4). Evaluate the given line...

Posted by halo-maniac90 on December 11, 2011 at 3:10 AM via web. 1 educator answer.

Math

What is the side of a cube of volume `125cm^3` ?  

Posted by ammi5 on December 11, 2011 at 2:54 AM via web. 1 educator answer.

Math

Find the Derivative of (e^(cos lnx))

Posted by awah on December 11, 2011 at 2:10 AM via web. 1 educator answer.

Math

Find the derivative of function y=(sin(cos(2pix^3)))*(1/x^2)?

Posted by thales on December 11, 2011 at 1:13 AM via web. 1 educator answer.