Answer this asap i just took a ss of it

How do i do this using elimination 2x+3y=12 x-y=6

Brent needs to paint a logo made using two right triangles. the dimensions of the logo are shown below. what is the difference between the area of the large triangle and the area of the small triangle? (1 point) select one: a. 4.5 cm2 b. 8.5 cm2 c. 16.5 cm2 d. 33.0 cm2

Find dy/dx using implicit differentiation ln(20+e^xy)=y