Question

The weight of a honeybee is (1.2 × 10⁻¹ , g). The weight of the pollen collected by the bee on one trip is (6.0 × 10⁻²). What is the combined weight of the bee and the pollen? Express your answer in scientific notation.

a) (1.8 × 10⁻¹ , g)
b) (7.2 × 10⁻² , g)
c) (1.8 × 10⁻² , g)
d) (2.4 × 10⁻¹ , g)

Answer 1

The combined weight of the bee and the pollen is (7.2 × 10⁻², g).

Step-by-step explanation:

To find the combined weight of the bee and the pollen, we need to add the weights of the two quantities. The weight of the honeybee is given as (1.2 × 10⁻¹) g, and the weight of the pollen collected is (6.0 × 10⁻²) g. To add these values, we can simply add the coefficients and keep the same power of 10. So, the combined weight is (1.2 + 6.0) × 10⁻² g, which simplifies to 7.2 × 10⁻² g. Therefore, the correct answer is option b) (7.2 × 10⁻², g).