T, a and g represent positive quantities. which equation is correct?
1. t + (2 kg) g = (2 kg) a
2. t + (2 kg) g = (3.2 kg) a
3. t − (2 kg) g = (3.2 kg) a
4. (3.2 kg) g − t = (2 kg) a
5. t − (2 kg) g = (2 kg) a
6. t − (3.2 kg) g = (2 kg) a
7. (3.2 kg) g − t = (2 kg + 3.2 kg) a
8. t − (3.2 kg) g = (3.2 kg) a
9. t − (3.2 kg) g = (2 kg + 3.2 kg) a
10. (3.2 kg) g − t = (3.2 kg) a

Plz me ! 1 which of earths spheres contains most of its mass? a atmosphere b hydrosphere c geosphere* d biosphere 2 erosion and weathering are examples of which types of forces? a constructive forces b destructive forces* c gravitational forces d inertia-related forces 3 which of the following statements about earths atmosphere is true? a earths atmosphere contains 78% water vapor which is essentail to life b earths atmosphere contains 21% oxygen c earths atmosphere contains carbon dioxide which all life forms require d earths atmosphere allows radiation from the sun to pass through it and warm earths surface* 4 the strenght of the force of gravity between two objects is determined by which of the following factors? select all that apply a the messes of the objects* b the distance between the objects* c the volumes of the objects d the surface area of the objects 5 earth and moon are kept in there respective orbits due to the influence of a inertia b gravity c gravity and inertia* d neither gravity or inertia if you answer all questions right i will give