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please help me with the following (1-5)
Write the following numbers in scientific notation.


1. 405 352 cm =

2. 7.6352 x 10-3 kg =

3. 3.1 x 104 mm + 4.87 x 105 mm =

4. (4.8 x 105 km) x (2.0 x 103 km) =

5. (3.3 x 10-4 mL) ÷ (1.1 x 10-6 mL) =

Sagot :

ghaithgh

[tex]1. \: 405352 \: cm = 4.05352 \times {10}^{5} \: cm[/tex]

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2. 7.6352 x 10-3 kg ( This is scientific notation) [ If you want —> Standard notation]

7.6352 x 10^ -3 kg = 0.0076352 kg

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[tex]3. \: \: 3.1 \times 10 ^{4} mm + 4.87 \times {10}^{5} \: mm \\ 0.31\times 10 ^{4} mm + 4.87 \times {10}^{5} \: mm \\ = 5.18 \times {10}^{5} \: mm[/tex]

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[tex]4. \: \: (4.8 \times {10}^{5} \: km) \times (2.0 \times {10}^{3} \: km ) \\ = 9.6 \times {10}^{8} \: km[/tex]

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[tex]5.(3.3 \times{10}^{ - 4}\: ml)\div(1.1 \times {10}^{ - 6}\: ml) \\ \\ \frac{3.3 \times {10}^{ - 4} \: ml}{1.1 \times {10}^{ - 6} \: ml} = \frac{33 \times {10}^{ - 4} \: ml}{11 \times {10}^{ - 6} \: ml} \\ \\ = \frac{33 \times {10}^{ - 4 + 6} }{11} ml \\ \\ = 3 \times {10}^{2} \: ml[/tex]

I hope I helped you^_^

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