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galben [10]
3 years ago
15

Y is inversely proportional to the square of x.

Mathematics
1 answer:
umka21 [38]3 years ago
8 0

Step-by-step explanation:

x²y = k, where k is a real constant.

When x = 3, y = 8.

Therefore k = (3²)(8) = 72.

The equation is x²y = 72 or y = 72/x².

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Crane Company recently billed a customer $ 720. Labor hours were 6 and the cost of the materials used was $ 150. If the company’
sertanlavr [38]

The materials were charged at a loading charge of 80.00% of their cost.

The total charge was $720 and included both the material charge and the labor charge.

The first thing to do is therefore find out the cost of the materials without the labor charge:

<em>= Total cost - labor charge</em>

= 720 - (6 labor hours x 75 per labor hour)

= 720 - 450

= $270

The total cost of materials is $270. To find the material loading charge, use the formula:

<em>= (Total cost of materials - Cost of materials used) / Cost of materials used x 100%</em>

= (270 - 150) / 150 x 100%

= 120 / 150 x 100%

= 80%

In conclusion, the material loading charge was 80.00%.

<em>Find out more at brainly.com/question/23089262.</em>

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The l.cm are
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