Question

Multiply 0.75 by 2.8×10−5
.(1 point)
Responses

2.1×10−4

2 point 1 times 10 to the negative 4 power

2.1×10−5

2 point 1 times 10 to the negative 5 power

2.1×10−7

2 point 1 times 10 to the negative 7 power

2.1×10−6

Answer 1

0.75 × 2.8×10⁻⁵ = (0.75×2.8)×10⁻⁵ = 2.1×10⁻⁵.

Answer: 2.1×10⁻⁵ (2.1 times 10 to the negative 5).