Solve by elimination

{ -3x - 10y = -4
{ x - 5y = 18

Use the net as an aid to compute the surface area of the triangular prism. a) 550 m2 b) 614 m2 c) 670 m2 d) 790 m2

Step by step explanation pls for 10 pts the length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?  

Which statement is true about the local minimum of the graphed function? 27 +0,25) over the interval [-4, -2], the local minimum is 0. over the interval (-2,-1], the local minimum is 25. over the interval (-1, 4], the local minimum is 0. over the interval [4, 7), the local minimum is -7. (-34, 139,0n 760) in modo