Question

A heavy lift rocket has an empty mass of about 4.8 x 104 kg. After it is fueled, it has a mass of 6.1 x 10 kg. What is the

mass of fuel that was added? (1 point)
O 1.3 x 105 kg
O 5.62 x 10 kg
O 1.3 x 104 kg
O 5.62 x 105 kg

Answer 1

a or c

Explanation:

Answer 2

c

Explanation:

The rocket better weigh more after it is fueled. So the weight must be 6.1*10^4 after fueling.

6.1 * 10^4 - 4.8*10^4

The easiest way to do this is to take it out of scientific notation.

61000 - 48000 = 13000 kg

If you insist on scientific notation, it is 6.1*10^4 - 4.8*10^4 = 1.3 * 10^4 which makes the answer C