91Ó°ÊÓ

Convert to scientific notation. $$ 0.00583 $$

Simplify and write scientific notation for the answer. Use the correct number of significant digits. $$ \left(4.26 \times 10^{-6}\right)\left(8.2 \times 10^{-6}\right) $$

By writing \(19 \cdot 21\) as \((20-1)(20+1),\) Patti can find the product mentally. How is this possible?

Simplify and write scientific notation for the answer. Use the correct number of significant digits. $$ 7.8 \times 10^{-34}+5.4 \times 10^{-34} $$

In computer science, \(1 \mathrm{KB}\) of memory refers to 1 kilobyte, or 1 \(\times 10^{3}\) bytes, of memory. This is really an approximation of 1 \(\times 2^{10}\) bytes (since computer memory uses powers of \(2)\). The TI- 84 Plus graphing calculator has \(480 \mathrm{KB}\) of "FLASH ROM." How many bytes is this?

Solve. Write the answers using scientific notation. Explain why each of the following is not scientific notation: \(12.6 \times 10^{8} ; 4.8 \times 10^{1.7} ; 0.207 \times 10^{-5}\)

To prepare for Section 5.3, review combining like terms and evaluating expressions (Sections 1.6 and 1.8). Combine like terms. $$ -3 x+(-2)-5-(-x) $$

Simplify. Write \(81^{3} \cdot 27 \div 9^{2}\) as a power of 3

Write the reciprocal of \(8.00 \times 10^{-23}\) in scientific notation.