What is the slope of the line y=(-2/5)x+y​

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Given that abcd is a rhombus, what is the value of x?

If x+y+z=0 what is the value of [tex] {x}^{3} + {y}^{3} + {z}^{3} [/tex]