Chapter 7: Q7. (page 399)
Write each expression using exponents.
Short Answer
The required expression is represented by .
Chapter 7: Q7. (page 399)
Write each expression using exponents.
The required expression is represented by .
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Get started for freeASTRONOMY Physicists estimate that the number of stars in the universe has an order of magnitude of . The number of stars in the Milky Way galaxy is around 100 billion. Using orders of magnitude, how many times as many stars are there in the universe as the Milky Way?
Record your answers on a sheet of paper. Show your work.
The table below shows the distances from the Sun to Mercury, Earth, Mars and Saturn. Use the data to answer each question.
Planet | Distance from Sun (km) |
Mercury | |
Earth | |
Mars | |
Saturn |
a. Of the planets listed, which one is the closest to the Sun?
b. About how many times as far from the Sun is Mars as Earth?
Express each number in scientific notation.
58,000
Simplify the expression
Express the area of a square with sides of lengthas a monomial.
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