Aperson rides a bicycle 10 miles from point a to point b and back to point a it takes two hours what is the persons velocity in miles per hour

a. -20 mph
b. 0 mph
c. 10 mph
d. 20 mph

C 10mph

Explanation:

Since the distance from point A to point B is 10 miles, going from point A to point B and back to point A would mean the you would bike 20 miles. Since it took 2 hours, we can do:

20/2 to calculate the velocity which would equal 10.

So the velocity is 10mph.

b..

is the correct one

explanation:

covalent bonds form as valence electrons are shared between two atoms. lewis structures and structural formulas are common ways of showing the covalent bonding in organic molecules. formal charge describes the changes in the number of valence electrons as an atom becomes bonded into a molecule.

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).