Homework Explained - Math Practice 101

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Grade 8 McGraw Hill Glencoe - Answer Keys
Chapter 1 - Real Numbers; Lesson 2: Powers and Exponents


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  Extra Practice  

  • Question 17 (request help)

    Write \(3\cdot\text{p}\cdot\text{p}\cdot\text{p}\cdot3\cdot3\) using exponents.

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  • Question 18 (request help)

    Evaluate \(\text{x}^{3} + \text{y}^{4}\) if x = -3 and y = 4.

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Write each expression using exponents.

  • Question 19 (request help)

    \((-\cfrac{5}{6})(-\cfrac{5}{6})(-\cfrac{5}{6})\)

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  • Question 20 (request help)

    \(\text{s}\cdot(7)\cdot\text{s}\cdot(7)\cdot(7)\)

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  • Question 21 (request help)

    \(4\cdot\text{b}\cdot\text{b}\cdot4\cdot\text{b}\cdot\text{b}\)

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Evaluate each expression.

  • Question 22 (request help)

    \(\text{k}^{4}\cdot\text{m}\), if k = 3 and m = \(\cfrac{5}{6}\)

  • Question 23 (request help)

    \((\text{c}^{3} + \text{d}^{4})^{2} - (\text{c} + \text{d})^{3}\), if c = -1 and d = 2

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Fill in with <,>, or = to make a true statement.

  • Question 26 (request help)
  • \((\cfrac{1}{2})^{4}\)   \((\cfrac{1}{4})^{2}\)
  • Question 27 (request help)

    Multiple Representations A square has a side length of s inches.

    a. Tables Copy and complete the table showing the side length, perimeter, and area of the square on a separate piece of paper.

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  • Question 27 (request help)

    b. Graphs On a separate piece of grid paper, graph the ordered pairs (side length, perimeter) and (side length, area) on the same coordinate plane. Then connect the points for each set.

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  • Question 27 (request help)

    c. Words On a separate sheet of paper, compare and contrast the graphs of the perimeter and area of the square. Which graph is a line?

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