Mathematics: (4.0 x 10^3)(2.8 x 10^-4) answer in scientific notation and can not seem to get this problem.

(4.0 x 10^3)(2.8 x 10^-4) answer in scientific notation

Ответ:

kelseydavid69

16.01.2022

$(4.0 \times 10^3)(2.8 \times 10^{-4})\implies 4.0\times 2.8\times 10^3\times 10^{-4}
\\ \quad \\
11.2\times 10^{3-4}\impliedby \textit{same base, different exponent}
\\ \quad \\
11.2\times 10^{-1}$

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Ответ:

dale87

03.08.2022

Mathematics

1.8 km

Step-by-step explanation:

The scale on the map is 1 : 15000.

This means that every 1 cm on the map is equal to 15000 cm on the ground.

12 cm on the map will therefore be:

12 * 15000 = 180000 cm

Let us convert to kilometres:

100000 cm = 1 km

180000 cm = 180000 / 100000 = 1.8 km

12 cm on the map will be 1.8 km on the ground.

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(4.0 x 10^3)(2.8 x 10^-4)

answer in scientific notation and can not seem to get this problem.

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