Solve each problem and write your answer in scientific notation.

Question

1.(6.0x10^5)x(3.0x10^4)
A.18x10^20
B.18x10^9
C.1.8X10^20
D.1.8x10^10
2.(5x10^-2) ÷(2x10^3)
A.2.5x10^-5
B.2.5x10^-1
C.25x10^1
D.25x10^2
3.(2.56x10^6)x(3.56x10^2)
A.9.1136x10^12
B.91.136x10^8
C.9.1136x10^8
D.91.136X10^12
4.In a recent year, the population of California was about 2.52x10^7 people. Its land area is about 4.05x10^5km^2. What was the average number of people per square kilometer?

Answer 1

i just realized this question has already been asked ugh!!!

Answer 2

yeah, and you apparently didn't intend to put in any effort on it ...

Answer 3

my bad

Answer 4

Where has this question been asked?