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प्रश्न
Very small numbers can be expressed in standard form by using ______ exponents.
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उत्तर
Very small numbers can be expressed in standard form by using negative exponents.
Explanation:
Very small numbers can be expressed in standard form by using negative exponents, i.e. 0.000023 = 2.3 × 10–3
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संबंधित प्रश्न
Express the given numbers in standard form.
6020000000000000
Express the given numbers in usual form.
3.02 × 10-6
Express the given numbers in usual form.
3.61492 × 106
Express the number appearing in the given statement in standard form.
Size of a bacteria is 0.0000005 m
Express the following number in the usual form.
A sugar factory has annual sales of 3 billion 720 million kilograms of sugar. Express this number in the standard form.
Express the following in standard form:
Express 56 km in m.
While studying her family’s history. Shikha discovers records of ancestors 12 generations back. She wonders how many ancestors she has had in the past 12 generations. She starts to make a diagram to help her figure this out. The diagram soon becomes very complex.
- Make a table and a graph showing the number of ancestors in each of the 12 generations.
- Write an equation for the number of ancestors in a given generation n.
A half-life is the amount of time that it takes for a radioactive substance to decay to one half of its original quantity.
Suppose radioactive decay causes 300 grams of a substance to decrease to 300 × 2–3 grams after 3 half-lives. Evaluate 300 × 2–3 to determine how many grams of the substance are left.
Explain why the expression 300 × 2–n can be used to find the amount of the substance that remains after n half-lives.
The given table shows the crop production of a State in the year 2008 and 2009. Observe the table given below and answer the given questions.
| Crop | 2008 Harvest (Hectare) |
Increase/Decrease (Hectare) in 2009 |
| Bajra | 1.4 × 103 | – 100 |
| Jowar | 1.7 × 106 | – 440,000 |
| Rice | 3.7 × 103 | – 100 |
| Wheat | 5.1 × 105 | + 190,000 |
- For which crop(s) did the production decrease?
- Write the production of all the crops in 2009 in their standard form.
- Assuming the same decrease in rice production each year as in 2009, how many acres will be harvested in 2015? Write in standard form.
