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Chapter 2: Q9. (page 93)

Error Analysis Describe and correct the error in solvingx+8=10.

Short Answer

Expert verified

There is an error in the stepx+8-8=0=10+8.

And the correction is x+8-8=0=10-8.

Step by step solution

01

Step-1- Solving given equation

Given equation is,

x+8=10.

Here, we need to subtract8on both sides to get value of x.

x+8=10x+8-8=10-8x=10-8x=2
02

Step-2- Comparing our steps with given steps

On comparing these steps with given steps, we can say that,

x+8-8=10+8is the wrong step.

03

Step-3- Conclusion

There incorrect step is x+8-8=10+8.

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Most popular questions from this chapter

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.

For the given expression,identify the terms, like terms, coefficients, and constant terms. Then simplify the expression.

鈥�鈭�7b+3+b鈭�10

Logical Reasoning Copy and complete the table. Use the results in each row to decide whether subtraction and division are commutative or associative operations. Explain your reasoning.

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

Copy and complete: A(n) _?_ of an equation is a number that produces a true statement when it is substituted for the variable.
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