An empty dump truck weighs about 2.8×10^5 pounds. How much does it weigh if 15,300 pounds of trash is added the answer should be in scientific notation.

1 answer

To determine the weight of the dump truck when 15,300 pounds of trash is added, you need to add the weight of the trash to the weight of the empty dump truck.

Weight of empty dump truck: 2.8×10^5 pounds

Weight of trash: 15,300 pounds

Total weight: 2.8×10^5 + 15,300 = 2.8×10^5 + 1.53×10^4

To add these numbers in scientific notation, you need to align the exponents and then add the coefficients:

2.8×10^5 + 1.53×10^4 = (2.8 + 0.153) × 10^5 = 2.953 × 10^5

Therefore, the weight of the dump truck with the added trash is 2.953×10^5 pounds.