Answer:
this is your answer. thanks!!
Answer:
The estimate is greater then.
Step-by-step explanation:
143*2=286
286*2=572 not 6,517
Answer: 
Step-by-step explanation:
Whenever an exponent is negative, you flip the solution.
For this,
, however the exponent is negative, so flip 16 to get your final answer of 
Answer:
70kilometers
Step-by-step explanation:
first we must find how much one half of a centimeter is
well, its easy, theres already a half for the distance, and the representation is an even number, so cut it in half.
20-10 is 10
and now the multiplication
20x3=60
60+10=70
70 kilometers