Determine if there is a proportional relationship between the two quantities. Explain your reasoning.

Mathematics

2 answers:

Helen [10]3 years ago

5 0

Answer:

Hold on a minute, gotta let my brain wake up.

Step-by-step explanation:

Katyanochek1 [597]3 years ago

3 0

Two quantities are proportional if their ratio is constant. Let's check the ratios:

$\dfrac{20}{8}=2.5,\quad \dfrac{12.5}{5}=2.5$

So, the two quantities appear to be proportional, and the constant seems to be 2.5.

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A clothing manufacturer uses the model a = √(f + 4) - √(36 - f) to estimate the amount of fabric to order from a mill. In the formula, a is the number of apparel items (in hundreds) and f is the number of units of fabric needed. If 400 apparel items will be manufactured , how many units of fabric should be ordered?

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Step-by-step explanation:

Given

$a = \sqrt{f + 4} - \sqrt{36 - f}$