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crimeas [40]
3 years ago
11

Craig earns extra money as a lifeguard. He earns $36 for 4 hours and $63 for 7 hours. Determine the constant of proportionality.

Mathematics
1 answer:
Hitman42 [59]3 years ago
6 0

Answer:

9.25$


Step-by-step explanation:


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Step-by-step explanation:

2)

In this problem, we know that:

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This means that the volume of each cup is equal to the total volume divided by the number of cups (5), therefore:

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And keeping in mind the equivalence between liters and milliliters:

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This means that the capacity of each cup is

V_1=0.2 L \cdot 1000 mL/L = 200 mL

3)

Here we want to find the mass contained in each cup.

We know that the mass of a substance is related to each volume by the equation

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In this problem, we have:

V = 0.2 L is the volume of juice in each cup

d=1kg/L is the density of juice (assuming it is the same as the density of water)

So, the mass of juice in one cup is:

m=dV=(1)(0.2)=0.2 kg

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a worker can complete the assembly of 15 chairs in 6 hours. At the rate,how many can the worker complete in a 40-hour work week?
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