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Chapter 2: Q. 12 (page 93)
Solve the equation. Check your solution.
Solution of given equation is
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Crafts You make a decorative paper chain with n links by cutting a 9 inch by 12 inch sheet of construction paper into n strips.
a. Write an expression in terms of n for the width of each paper strip.
b. Suppose you want each strip to be 0.75 inch wide. Use the problem solving strategy guess, check, and revise to find the number of links your paper chain will have.
Copy and complete: A(n) _?_ of an equation is a number that produces a true statement when it is substituted for the variable.
Extended Problem Solving You are making a rectangular rug. You want the rug to be twice as long as it is wide. Let w represent the width (in feet) of the rug.
a. Write an expression in terms of w for the perimeter of the rug.
b. Write an expression in terms of w for the area of the rug.
c. Calculate Copy and complete the table.
d. Writing Explain how doubling the width of the rug affects the perimeter and the area
Astronomy Cepheid stars appear to pulsate because they expand and contract in size. In its contracted phase, the Cepheid star Zeta Geminorum is 51 million miles across. This is 5 million miles less than the star鈥檚 distance across in its expanded phase. Find the distance across Zeta Geminorum in its expanded phase.
Solve the equation. Check your solution.
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