Question

(7,2×10,‐³)×(3×10‐¹)​

Answer 1

Ответ:

2,16 • 10^(-3).

Объяснение:

7,2×10^(-3)•3×10^(-1) = (7,2•3)•(10^(-3)•10^(-1)) = 21,6 • 10^(-3-1) = 21,6 • 10^(-4) = 2,16 • 10^1 • 10^(-4) = 2,16 • 10^(-3).

Answer 2

To multiply two numbers in scientific notation, you can simply multiply their coefficients and add their exponents. Here's how you would do it:

(7.2 × 10^-3) × (3 × 10^-1)

First, multiply the coefficients: 7.2 × 3 = 21.6

Then, add the exponents: -3 + -1 = -4

So, the result is 21.6 × 10^-4, which can also be written as 0.00216 in decimal notation:

(7.2 × 10^-3) × (3 × 10^-1) = 0.00216