Answer:
Option 4 - 
Step-by-step explanation:
To find : Which set of rational numbers is arranged from least to greatest?
Solution :
The set of rational numbers are

Writing all number in one form,


Now, -1.4<-0.5<0.2<3
From least to greatest the set of natural numbers are

So, 
Therefore, option 4 is correct.
Answer:
49
Step-by-step explanation:
Positive 49 not -49
Marisa had rounded 3.48 to 4 and times it to 7.33 which she rounded to 8
In fact 3.48 is closer to 3 we know this since the .48 of 3.48 s below .50 if it was .50 or above it would round to 4 but it doesn't the same applies to 7.33 so
it should be 3 x 7 = 21
So, Using your conversion chart(if you have one) you'd see 1 liter makes 1000 milliliters. So, if you have half of a liter(0.5), then you have 500 milliliters. If he adds 300 more, then you get 800 milliliters total, which is also equal to 0.8 liters. Hope this helps!
Answer: distance from earth to moon is 4x10^5= 4,000,000
The distance from Earth to Mars is about 5x10^7= 50,000,000.
Step-by-step explanation: