Multiply each equation by a number that produces opposite coefficients for x and y. 2/5x + 6y = -10 x... -2 - 2y = 40 x...
Solve for x.

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?

How to simply and write the answer n a whole number