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solve the following systems of linear equations, showing all work: 3y+3x=-30 -2y+2x=-8

Posted by kink on April 1, 2010 at 9:13 AM via web.

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Solve the following systems of linear equations, showing all work: -5y+9x=27 8y-x=-70

Posted by tika1626 on April 1, 2010 at 9:11 AM via web.

*Clever* way to factor (x^5 + y^5) = (x +y) * f(x,y) without long division. That is determine...

Posted by shoshanna6e23 on April 1, 2010 at 1:31 AM via web.

ali want to participate in sport day he has to choose 2 events only Gymnasium swimming...

Posted by aquaneos on March 31, 2010 at 9:52 PM via web.

Find the arc lengthof the curve. y= e^x . 0<=x<=1 show steps.

Posted by ryghukil on March 31, 2010 at 10:07 AM via web.

what is the integral of f(4x)dx from 1 to 3 given that the integral of f(x) from four to twelve...

Posted by bdub1234 on March 31, 2010 at 7:51 AM via web.

Objective and Constraint1. An industrial tank is formed by adjoining two hemispheres to the end...

Posted by lindsey0 on March 31, 2010 at 7:15 AM via web.

The string 1,(3x+1),13,19,... is an arithmetical progression. Which is the number x?(x is real).

Posted by else9393 on March 31, 2010 at 2:12 AM via web.

Solve the equation log 3(x-8)=2.

Posted by eligia on March 31, 2010 at 1:36 AM via web.

Knowing that x1 , x2 are the real solutions of the equation x^2-6x+3=0, calculate 1/(x1-1) +...

Posted by adelajda on March 31, 2010 at 1:31 AM via web.

Calculate the sum S = 1+4+7+...+40

Posted by andrzej on March 31, 2010 at 1:16 AM via web.

Considering the function f:R-R, f(x)=x^2-3x+2. Found the value of x, for f has the minimum value.

Posted by browntim3 on March 31, 2010 at 1:02 AM via web.

Find the equation of the line which crosses the points A(4,-3) and B(3,-4).

Posted by l0l1 on March 31, 2010 at 12:38 AM via web.

Calculus question? Find the critical numbers of f (x) = x^2-6x. Find also the open intervals...

Posted by tiasharma on March 30, 2010 at 8:14 PM via web.

Calculate the value of the product P=f(0)*f(1)*f(2)*........*f(100), where f(x)=x-5.

Posted by maxine60 on March 30, 2010 at 3:42 PM via web.

Demonstrate the identity for all x admissible values: E(x):2(cos x – sin x)^2 + 2(cos x + sin...

Posted by roperswen on March 30, 2010 at 3:39 PM via web.

Which are the root of the equation 3^(2x+1)=1/9?

Posted by sapon on March 30, 2010 at 3:38 PM via web.

Which are the real roots of the equation log4 (x+4)-log4 (x+1)=1?

Posted by babysana on March 30, 2010 at 3:36 PM via web.

Which is the fourth term of a geometrical progression, knowing that it's first term, a1=3 and...

Posted by greta92 on March 30, 2010 at 3:34 PM via web.

Which is the function f(x)=ax+b, when 2f(x)+3=4x+9?

Posted by jeuxdesfou on March 30, 2010 at 2:58 PM via web.

Prove that log 3 (12)=2a+1, when log 3 (2)=a.

Posted by galbenusa on March 30, 2010 at 2:57 PM via web.

Solve the equation, knowing that the solutions have to be real solutions: 3^(x+1)-2*3^x=1.

Posted by cartoffried on March 30, 2010 at 2:55 PM via web.

How could be calculated the module of the vector v (pi/6) when it is defined as v(t)=i*cos t +...

Posted by kikiri on March 30, 2010 at 2:52 PM via web.

Which is the equation of the line x+my+n=0 if the points A(1,1) and B(3,-1) are points of this line?

Posted by katibatt on March 30, 2010 at 2:49 PM via web.

Verify if x1^3+x2^3+x3^3=3(x1^2+x2^2+x3^2)-6, where x1,x2,x3 are the roots of the equation...

Posted by for3cast on March 30, 2010 at 2:48 PM via web.

Determine the second degree function, whose graph is passing through the points A(-2,3), B(2,0),...

Posted by hahaz on March 30, 2010 at 2:43 PM via web.

x+3,- 2x, 2x+11 are the consecutive terms of an arithmetical progression. Find out the value for...

Posted by gentzisisaci on March 30, 2010 at 2:42 PM via web.

Calculate x1^2 + x2^2, where x1 and x2 are the roots of the equation x^2+7x-4=0.

Posted by noralbbig on March 30, 2010 at 2:40 PM via web.

It is possible to prove that a triangle is isosceles, when there are known just the coordinates...

Posted by frontman0 on March 30, 2010 at 2:38 PM via web.

Calculate (f*g)(x)-(g*f)(x). "*" is a law of composition and f(x)=2x-4, g(x)=x^2-2x+3.

Posted by penarul on March 30, 2010 at 2:36 PM via web.

Calculate the inverse of the matrix A, where 1 1 A= 0 -1

Posted by cununadelaur on March 30, 2010 at 2:34 PM via web.

Solve the equation x*x*x=23/8, where "*" is the composition law, defined by:x*y=xy-3x-3y+12.

Posted by pufsipene on March 30, 2010 at 2:32 PM via web.

Find the arc length of the curve . y=ln[(e^x+1)/(e^x-1)] a<=x<= b a >0. show steps.

Posted by qjfkspkg on March 30, 2010 at 7:15 AM via web.

Find the arc length of the curve . y=arcsin(x)+sqrt(1-x^2) 0<=x<= 1. show steps.

Posted by ryghukil on March 30, 2010 at 7:12 AM via web.

Solve the following systems of linear equations, showing all work: 2x+y-z = 14 x+2y-z = 12...

Posted by tika1626 on March 29, 2010 at 5:22 AM via web.

1 educator answer.

How do you solve sin^2X-1=cos^2XThey are squared just for your information

Posted by chocolate975 on March 29, 2010 at 5:07 AM via web.

Use the method of cylindrical shells to find the volume rotating about the x- axis. x=1+y^2,...

Posted by qjfkspkg on March 29, 2010 at 3:15 AM via web.

Use the method of cylindrical shells to find volume rotating about specific axis. y=4x-x^2, y=3...

Posted by ryghukil on March 29, 2010 at 3:11 AM via web.

i have homework to do over the sring break in analysisof function :y=6-x x=4.5+y use elimnation...

Posted by tj17 on March 28, 2010 at 10:32 PM via web.

How can I describe quadratic problems associate with each level of Bloom's Taxonomy?

Posted by haslina on March 28, 2010 at 7:45 PM via web.

Find the number ab, when (a+b-3)-6a=-a^2-9.

Posted by lejandan on March 27, 2010 at 11:28 PM via web.

Prove that the number log 3 (15) - log 3 (5) is a natural number.

Posted by nena1993 on March 27, 2010 at 11:26 PM via web.

There are given the expressions: A= x^2+2x-2 and B= x^2-2x-4. Calculate A*B-A.

Posted by portoruj on March 27, 2010 at 11:24 PM via web.

Is the inequality x^2 +2x +3>0 true?

Posted by boroboacana on March 27, 2010 at 11:22 PM via web.

Which is the value of the expression E=a-(1/a), when a^2 + (1/a)^2=25.04?

Posted by browntim3 on March 27, 2010 at 11:21 PM via web.

Calculate the following expressions: a) (x+3)^2-(x-3)^2+(x+3)(x-3) b) (x^2+x+1)-(x+1)^2 c)...

Posted by andrzej on March 27, 2010 at 11:19 PM via web.

Prove that for any real value of x, the inequality exists. sin x * cos x< 1/2

Posted by l0l1 on March 27, 2010 at 11:17 PM via web.

A steel band exerts a horizontal force of 79.5 N on a tooth at point B. What is the torque on the...

Posted by g11459 on March 27, 2010 at 3:41 PM via web.

If a group included 70% men and 30% women, and 40% were left handed, what would be the...

Posted by ms-mcgregor on March 27, 2010 at 12:40 PM via web.

Determine all x values, for the expression E(x)= √x²−3x+2, to exist.

Posted by sixpenpencil on March 27, 2010 at 3:15 AM via web.

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