Assume the Earth is a perfect sphere with radius 6371 km. Calculate the volume of the Earth in km3. Give your answer in the form × 10, where 1 ≤ < 10 and ∈ Z.

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

Determine whether triangle tjd is congruent to triangle sek  givent (-4,-2), j (0,5), d (1,-1), s (-1,3), e (3,10), k (4,4)and explain the reason.  select one: a. yes, by sssb. no, by aasc. no, by asad. yes, by sas

Why is causation so much more difficult to prove than correlation?