Question

The U.S. Postal Service set the maximum thickness of a postcard at 0.016
inch.

Which of the following is a reasonable estimate for the maximum thickness of a postcard?

(1 point)
Responses

2×10−3
in
2 times 10 to the negative 3 powerin

2×10−2
in
2 times 10 to the negative 2 powerin

2×102
in
2 times 10 squaredin

2×103
in

Answer 1

To estimate the maximum thickness of a postcard, which is 0.016 inches, we can express this in scientific notation.

The value 0.016 can be rewritten as:

\[
0.016 = 1.6 \times 10^{-2} \text{ in}
\]

Now, among the given options, the only one that gives a value close to 0.016 inches is:

\[
2 \times 10^{-2} \text{ in}
\]

So, the correct reasonable estimate for the maximum thickness of a postcard is:

**2 × 10⁻² in.**