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05.11.2020 •
Mathematics
An electrician charges $15 for a service call plus $25 per hour. The total bill for a recent job was $165.
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Ответ:
h = 6
Step-by-step explanation:
Equation:
15 + 25h = 165
Subtract 15 from both sides
25h = 150
Divide both sides by 25
h = 6
So 6 hours
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Ответ:
Place 80 as "a" and 39 as "b". Your formula should look like 80^2 + 39^2 = c^2.
Next, plug this into your calculator to get 7921. Then square root 7921.
89