Answer:
speed is distance over time.so you convert 1/2 to hours then solve
Step-by-step explanation:
hope it helped
Answer:
i
Step-by-step explanation:
dontkow
Answer:
there are many ways
Step-by-step explanation: we walk on the crust of our earth interact with rocks, and some glasses are made of molten lava. which is also from a specific layer of earth (sorry, dont remember which) and some people drill in the mines and maybe even get lower than the crust. i hope this helps :/