Algebra Find the values of the variables for which ABCD is a parallelogram. 7. А
(2x + 10)
D (y + 20)
B (2x-10)

In a command economy, the majority of goods and services are provided by the

Fossils of glossopteris, an extinct fern, were discovered on which continents to support the theory of continental drift? check all that apply.

The oldest seafloor in the atlantic ocean is located closest to the edge of the continents. explain how this age can be used to figure out when north america first began to separate from europe