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victus00 [196]
2 years ago
7

Ali had his car repaired at Ace Auto. He was charged AED 50 per hour of labor plus AED 150 for parts. His total bill for the rep

air was AED 375. How many hours was Ali charged for?
Mathematics
1 answer:
AnnZ [28]2 years ago
6 0

Step-by-step explanation:

x = hours Ali was charged for

150 + 50 x = 375

- 150 -150

50x = 225

÷ 50. ÷50

x = 4.5 hours

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Answer:

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Interval = \{x:x=1\}

Step-by-step explanation:

Given

Represent the number with x

The required sum can be represented as:

x + \frac{1}{x}

Hence, the objective function is:

S(x) = x + \frac{1}{x}

To get the the interval, we start by differentiating w.r.t x

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Cross Multiply

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Take positive square root of both sides because x is positive

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Representing x using interval notation, we have

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To get the smallest sum, we substitute 1 for x in S(x) = x + \frac{1}{x}

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