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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In the following exercises, use the Pythagorean theorem to find the length of the leg. Round to the nearest tenth if necessary.
A 13-foot string of lights will be attached to the top of a 12-foot pole for a holiday display as shown. How far from the base of the pole should the end of the string of lights be anchored?
In the following exercises, use the Pythagorean theorem to find the length of the leg. Round to the nearest tenth if necessary.
Solve the inequality, graph the solution on the number line, and write the solution in interval notation .
Converting temperature
While on a tour in Greece, Tatyana saw that the temperature was Celsius. Solve for F in the formula to find the Fahrenheit temperature.
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