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chiliboy8394
25.02.2020 •
Mathematics
60% of employees in a factory are workers. All the remaining employees are executives. The annual income of each worker is $ 350. The annual income of each executive is $ 400. What is the average annual income of all the employees in the factory together? (A) $350 (B) $360 (C) $370 (D) $400 (E) $375
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Ответ:
E - $375
Step-by-step explanation:
Average is 350 + 400 divided by 2
=$375
Ответ:
x =![\frac{y^2-b}{a}](/tpl/images/2414/2537/929a3.png)
Step-by-step explanation:
Given
y =
( square both sides )
y² = ax + b ( subtract b from both sides )
y² - b = ax ( isolate x by dividing both sides by a )