Question

There are 1.3 x 10⁵ cells in a petri dish. Each cell is approximately 2.8 x 10⁻⁶ m.

How large are all the cells combined?
А. 3.64 x 10⁻¹⁷
B. 3.64 x 10⁰m
С. 3.64 x 10¹m
D. 3.64 x 10¹¹ m

Answer 1

The size of all the cells combined is approximately 3.64 x 10⁻⁷ m.

Step-by-step explanation:

To find the size of all the cells combined, we need to multiply the number of cells (1.3 x 10⁵) by the size of each cell (2.8 x 10⁻⁶ m).

Using the properties of scientific notation, we can multiply the numbers and add the exponents:

(1.3 x 10⁵) x (2.8 x 10⁻⁶) = (1.3 x 2.8) x (10⁵ x 10⁻⁶) = 3.64 x 10⁻¹ x 10⁻⁶ = 3.64 x 10⁻⁷ m.

Therefore, the size of all the cells combined is approximately 3.64 x 10⁻⁷ m.