Answer:
The function relating student absent days to grades has a negative slope (grades decrease as absences increase).
Step-by-step explanation:
There isn't much information in the question, but here are a couple of observations. Prof. Andrews found:
- The function relating student absent days to grades has a negative slope (grades decrease as absences increase).
- Evidence suggesting his lectures do convey useful information
- Students don't enjoy his class
Just kidding on the last 2, but all statements could be valid based on what little information is provided.
The mass of the CO2 produced IS 630 Kg
<h3>What is gasoline?</h3>
Gasoline is a kind of fuel that is composed mostly of isooctane. In most engines, gasoline is widely used hence the demand for the product is high. We know that the combustion of an alkane (of which gasoline is one) would produce carbon dioxide and water according to a balanced reaction equation.
The balanced reaction equation for the combustion of gasoline is shown in the image attached to this answer.
Since a Puerto Rico hospital uses 3 gallons of gasoline per hour, and there are 24 hours in a day, it the follows that 72 gallons of gasoline are used per day. This 72 gallons is the equivalent of 272.88 L
Now;
Given that the density of gasoline = 748.9 g/L
Mass of gasoline = 748.9 g/L * 272.88 L = 204 Kg
Number of moles of gasoline = 204 * 10^3/114 g/mol = 1789.5 moles
If 2 moles of gasoline produces 16 moles of CO2
1789.5 moles produces 1789.5 moles * 16 moles/2 moles = 14316 moles
Mass of CO2 = 14316 moles * 44 g/mol = 630 Kg
Learn more about gasoline:brainly.com/question/13402652?
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When 'y' is directly proportional to 'x', we express this by
y = kx
where 'k' is the constant, which we need to work out first
Cost of circular mirrors = (k) (diameter)²
50 = k(60)²
50 ÷ 3600 = k
the proportional formula is
y = (1/72)x²
The cost of the mirror when diameter = 90cm
y = (1/72) (90)²
y = 112.5
Answer: $112.50
Answer:
367.6
Step-by-step explanation:
Hope this helps!