Question

evaluate the expression.
(1.4 × 10⁷) × (2.5 × 10⁻⁴)
? × 10

Explanation:

Step1: Group coefficients and powers

$(1.4 \times 2.5) \times (10^7 \times 10^{-4})$

Step2: Multiply the coefficients

$1.4 \times 2.5 = 3.5$

Step3: Multiply the powers of 10

$10^{7 + (-4)} = 10^3$

Step4: Combine the results

$3.5 \times 10^3$

Answer:

$3.5 \times 10^3$