The star Antares is approximately 604 light-years from Earth. Write this distance in scientific notation.

Why can't astronomers measure the parallax of a star that is a million light-years away?

Write the numbers 10,100, and 1000 in scientific notation with two, three, and four significant figures, respectively.

Evaluate the expression. Write your answer in scientific notation. 8. (2.8 x 10ˉ⁵) - (1.6 x 10ˉ⁶)

Use a dictionary to define the word interpret. Then write a sentence to use interpret in its scientific meaning.

Evaluate. Write your answer in scientific notation.

$$(5 X 10^{-4})(8.2 X 10^{-3})$$

In this exercise, change the numbers from scientific notation to ordinary notation.

$$6.8\times 10^7$$

(a) Perform the indicated operation without the use of a calculator and express each answer in decimal notation. (b) Confirm your answer from part (a) by using a scientific calculator to perform the operations. If the calculator displays the answer in scientific notation, convert the answer to decimal notation.

$$5.2x10^7/4x10^9$$

The given expressions are designed to yield results expressed in a form of scientific notation. For example, the calculator-displayed result of 1.23E5 can be expressed as 123,000, and the result of 1.23E-4 can be expressed as 0.000123. Perform the indicated operation and express the result as an ordinary number that is not in scientific notation.

$$9^{11}$$

(a) Write $675$ million in scientific notation.

(b) Write $1.86 \times 10^5$ in standard form.

Write the amount of expenditures in dollars obtained from the category in scientific notation. Interest on school debt

(a) Perform the indicated operation without the use of a calculator and express each answer in decimal notation. (b) Confirm your answer from part (a) by using a scientific calculator to perform the operations. If the calculator displays the answer in scientific notation, convert the answer to decimal notation.

$$(5.1x10^t)(3x10^{-4})$$

Perform the indicated operation. Write the answer in scientific notation.

$$\frac{18,200 \times 100}{91,000}$$

Evaluate the expression. Write your answer in scientific notation. 14. (6.4 x 10⁵) - (5.4 x 10⁴)