Friday

September 19, 2014

September 19, 2014

Posted by **susie** on Friday, June 29, 2007 at 9:08pm.

3x-4+7x+10=

3x+7x=10x

−4+10= 14

10x+14

that is my answer please help

You just added two sides, a rectangle has four sides. So the perimeter should be twice what you calculated. However, you have several errors.

-4+10=-6

So you should have gotten 10x-6, however, that needs to be doubled (you only added two sides).

**Answer this Question**

**Related Questions**

Math - Find the equation of the tangent line 5x^2+y^2=14 at (1,3). P.S: It's ...

calculus - f(x,y)=x^2+2y^2 use the gradient vector f(5, 1) to find the tangent...

math - A rectangle has sides of 4x 4 and 8x + 10. Find the expression that ...

math - A rectangle has sides of 3x 4 and 7x + 10. Find the expression that ...

math, drbob222 - For this problem is it only asking for the exprssion(formula). ...

math 012 double check me please - 9x+3(x-4)=10(x-5)+7 9x+3x-12=10x-50+7 12x-12=...

how about his one - -7+ 5x = 10x-2? im not sure I know its -1, but im not sure ...

math - f(x) = x^2 + 10x + 24 =(x^2 + 10x)+ 24 =(x^2 + 10x + 25 - 25) + 24 f(x...

Intermediate Algebra - Determine whether the point (1, 8) is a solution of the ...

Math - The variable W represents the width of a rectangle. The length of the ...