Homework Help

Math

What is the difference between direct and inverse proportion?

Posted by amara2 on September 10, 2011 at 1:22 AM via web. 1 educator answer.

Math

Lyn received 17.5% holiday load (h.l) on 4 week normal wage (works 36 hr wk). Find the normal week wage if...

Posted by pew-pew-123 on September 9, 2011 at 11:39 PM via web. 1 educator answer.

Math

Which is the smallest whole number that ends with 19, is divisible by 19 and the sum of the digits is 19?

Posted by pankajgarg9696 on September 9, 2011 at 9:21 PM via web. 1 educator answer.

Math

Three numbers in GP have a sum of 13/12 and product 1. What are the numbers?  

Posted by yasaraman on September 9, 2011 at 9:02 PM via web. 1 educator answer.

Math

In ABCD parallelogram M is an arbitrary point. Prove that MA+MC=MB+MD. (MA, MB, MC, MD are vectors)

Posted by zimzum95 on September 9, 2011 at 7:57 PM via web. 1 educator answer.

Math

The equation of a line L is y= -3x - 1/4. Find the coordinates of the point of intersection of L with the x-axis.

Posted by misskosmetics on September 9, 2011 at 6:23 PM via web. 1 educator answer.

Math

(vedic math) What is the easiest way to get the result of : 96*98*91=? Explain the process used?

Posted by shivankshekhar on September 9, 2011 at 6:08 PM via web. 1 educator answer.

Math

If (sin^4 X)/a + (cos^4 X)/b = 1Prove that 1/(a+b)^3 = (sin^8 X)/a^3 + (cos^8 Y)/b^3

Posted by qwertymak on September 9, 2011 at 3:26 PM via web. Be the first to answer.

Math

What is the solution to the equation 2*x^3-21*x^2+73*x-84 = 0

Posted by tonyah995 on September 9, 2011 at 3:20 AM via web. 1 educator answer.

Math

What is x in the equation 4x+0.4=4.4?

Posted by helga95 on September 9, 2011 at 3:01 AM via web. Be the first to answer.

Math

How to solve the equation (x-1)(x+2)=0 if x>=1?

Posted by helga95 on September 9, 2011 at 2:54 AM via web. Be the first to answer.

Math

How do you find all values of x that satisfy: 2x^2 - X^2 - 8x + 4 >/= 0 I'm not sure what that really...

Posted by rosies on September 9, 2011 at 2:22 AM via web. Be the first to answer.

Math

What are all solutions of the system ? |x|=1 2x-y=1

Posted by helga95 on September 9, 2011 at 2:11 AM via web. Be the first to answer.

Math

Solve the system of equations by any methods. 2x-3y+1=0 x+y-2=0

Posted by helga95 on September 9, 2011 at 1:52 AM via web. 1 educator answer.

Math

Solve the system of equations in two unknowns    x=y-1 3x-2y=5

Posted by helga95 on September 9, 2011 at 1:46 AM via web. Be the first to answer.

Math

What is cos(x+2pi)+cos(x-2pi)?

Posted by tarja19 on September 9, 2011 at 1:26 AM via web. Be the first to answer.

Math

Use transformations and the zeros of the polynomial functions f(x)=x(x-4)(x+2) to determine the zeros of y=f(2x)

Posted by mathisgay on September 9, 2011 at 1:02 AM via web. 1 educator answer.

Math

What is the antiderivative of the function lnx/x^-1?

Posted by pengui on September 9, 2011 at 12:26 AM via web. Be the first to answer.

Math

how do you find the inverse of the function y=(2x+1)/(x+2)

Posted by math30fail on September 9, 2011 at 12:22 AM via web. 1 educator answer.

Math

How to convert the complex number 5+2i to polar form?

Posted by helga1995 on September 8, 2011 at 11:59 PM via web. 1 educator answer.

Math

Verify if the product (3-2i)(3+2i) is complex?

Posted by helga1995 on September 8, 2011 at 11:52 PM via web. Be the first to answer.

Math

Convert the complex number 5<53 degree to rectangular form?

Posted by helga1995 on September 8, 2011 at 11:38 PM via web. Be the first to answer.

Math

How to write a quadratic equation in the variable x, having the numbers 1/3 and -1/3 as solutions?

Posted by helga1995 on September 8, 2011 at 11:30 PM via web. 1 educator answer.

Math

What is the absolute value of z=3-4i?

Posted by helga1995 on September 8, 2011 at 11:01 PM via web. Be the first to answer.

Math

Sketch the following functions and identify its domain and range. f(x) = 3   x>=2 x^2-4x+6  ...

Posted by spock3 on September 8, 2011 at 10:07 PM via web. Be the first to answer.

Math

Determine whether 16x^2 + 32x + 25y^2 + 50y = 359 is a circle, hyperbola or an ellipse.Show complete solution...

Posted by spock2 on September 8, 2011 at 9:59 PM via web. Be the first to answer.

Math

State whether the following equations are independent, dependent, consistent, inconsistent and justify. x + y =...

Posted by spock1 on September 8, 2011 at 9:26 PM via web. Be the first to answer.

Math

Integrate [((log(5) x)^2 + sqrt 2*(log(5) x) + 9)/x] with respect to x.

Posted by kennyss on September 8, 2011 at 6:35 PM via web. 1 educator answer.

Math

A tunnel is 1250m long, and a train is 150m long, travelling at a constant speed of 72km/h. Calculate the time...

Posted by misskosmetics on September 8, 2011 at 6:13 PM via web. 1 educator answer.

Math

Show that x-1 is a factor of a polynomial P of positive degree if and only if the sum of the coefficients of P...

Posted by svjr on September 8, 2011 at 5:02 PM via web. 1 educator answer.

Math

How do you find the value of w if it is given that V=lwh?

Posted by nakakura on September 8, 2011 at 3:09 PM via web. 1 educator answer.

Math

What is the last digit of 3^52?Explain several different ways this could've been done.

Posted by andrewmezzo on September 8, 2011 at 11:33 AM via web. 2 educator answers.

Math

xy+3/5xy ?

Posted by anna-bsa on September 8, 2011 at 11:13 AM via web. 1 educator answer.

Math

what is the perpendicular bisector of the slope eight over zero?

Posted by sasuke24 on September 8, 2011 at 9:51 AM via web. 1 educator answer.

Math

Show that P(0,4,4), Q(2,6,5) and R(1,4,3) are vertices of an isosceles triangle.

Posted by mgolahi on September 8, 2011 at 9:44 AM via web. 2 educator answers.

Math

Solve: −3x + 2x = 6

Posted by nieshac12 on September 8, 2011 at 9:20 AM via web. 1 educator answer.

Math

A rectangle has an area or 300 square meters and a perimeter of 80 meters. What are the length and width?

Posted by faithlovesdinosaurs18 on September 8, 2011 at 7:59 AM via web. 1 educator answer.

Math

I don't understand what it means when they say write an expression with a variable. could you please write an...

Posted by crystalrose2 on September 8, 2011 at 7:46 AM via web. 2 educator answers.

Math

A quiz has ten questions: 7 true/false and 3 multiple choice. the multiple choice questions each have four...

Posted by catd1115 on September 8, 2011 at 3:55 AM via web. 1 educator answer.

Math

What is 2 1/4 divided by 3/4

Posted by shahd20 on September 8, 2011 at 2:50 AM via web. 1 educator answer.

Math

Simplify (x^2 - y^2)^2 when x=2 and y=-1

Posted by catd1115 on September 8, 2011 at 1:17 AM via web. 1 educator answer.

Math

How do I solve a^1/2 * a^1/3 ?

Posted by catd1115 on September 7, 2011 at 10:43 PM via web. 1 educator answer.

Math

How to use distributive law to multiply complex numbers (2+3i)(1-5i)?

Posted by helga1995 on September 7, 2011 at 9:24 PM via web. Be the first to answer.

Math

Express in the form of a complex number a+bi: (2-5i)-(-4-5i) and (-3i)-(7-4i)

Posted by helga1995 on September 7, 2011 at 9:00 PM via web. Be the first to answer.

Math

Why we cannot divide 3+5i by 1+i?

Posted by helga1995 on September 7, 2011 at 8:32 PM via web. Be the first to answer.

Math

I must write a quadratic equation and i know only one zero. What is the quadratic whose zero is 2-2i?

Posted by helga1995 on September 7, 2011 at 8:18 PM via web. Be the first to answer.

Math

What is the result if raise (1+i) to 23? If the exponent is 24, what is 1+i if raise to 24?

Posted by helga1995 on September 7, 2011 at 7:50 PM via web. Be the first to answer.

Math

How to prove that the number is complex or real? (2+5i)(11-i)(2-5i)(11+i)

Posted by helga95 on September 7, 2011 at 7:27 PM via web. Be the first to answer.

Math

Given polynomial f=x^4+ax^3+bx+c, f(0)=f(1), what are a,b,c if 1+isquareroot3/2 is the root of f?

Posted by helga95 on September 7, 2011 at 6:14 PM via web. Be the first to answer.

Math

Find the rectangular form of number 2(cos200+isin200)? explain Argand diagram.

Posted by helga95 on September 7, 2011 at 5:36 PM via web. Be the first to answer.