Question

75 POINTS HELP PLEASE

Answer 1

Hello!

I believe the most logical answer is C) (5×10^4) (1×10^2).

I hope it helps!

Answer 2

The correct answer is C) (5×10⁴)(1×10²)

Explanation:
The number of trees can be calculated by the formula:
trees = density × area

Consider that the problem says that the researcher makes an approximation, and the answers have numbers written in scientific notation.

The density is 86 trees/km², 
which can be rounded to 100 trees/km² 
and written as 1×10².
Therefore, density = 1×10² trees/km²

The area of a square can be calculated by the formula:
A = s²
   = 220² 
   = 48400 km²
which can be roundend to 50000
and written as 5×10⁴
Therefore, area = 5×10⁴ km²

Now, we can substitute in the original formula:
trees = (1×10²)(5×10⁴)