Question

Which number is not in scientific notation?

a) 10 x 10¹⁰

b) 2.12345 x 10-²

c) 6 x 10³

d) 4.5 x 10-⁴

Answer 1

The number not in scientific notation is 10 x 10¹⁰. Scientific notation requires a single digit before the decimal point. The correct scientific notation for the provided examples would be 9.943 × 10³ and 5.88399 × 10⁶ respectively.

Step-by-step explanation:

The number that is not in scientific notation is a) 10 x 10¹⁰. Scientific notation requires that the number be expressed as the product of a number between 1 and 10 and a power of 10. To convert the provided numbers into proper scientific notation:

• For a. 72.44 × 10³, we leave the number as it is because it's already in the correct form.
• For b. 9,943 × 10⁻⁵, we rewrite it as 9.943 × 10³.
• For c. 588,399 × 10², we rewrite it as 5.88399 × 10⁶.

Answer 2

a) 1.E11

b) 0.021345

c) 6000

d) 0.00045