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Chapter 2: Q. 92 (page 128)
The difference of four times a number and seven is 21. Find the number.
The number is 7.
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The sum of two numbers is negative twenty-three. One number is seven less than the other. Find the numbers.
Classify the below equation as a conditional equation, an identity, or a contradiction, and then state the solution.
Gerry worked Sudoku puzzles and crossword puzzles this week. The number of Sudoku puzzles he completed is eight more than twice the number of crossword puzzles. He completed Sudoku puzzles. How many crossword puzzles did he do ?
In the following exercises, use the Pythagorean theorem to find the length of the leg. Round to the nearest tenth if necessary.
Classify the below equation as a conditional equation, an identity, or a contradiction, and then state the solution.
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