Find the difference. 60 degrees-30 degrees, 50'-40', 40"-50"
1 answer:
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<h3>Answer: 4</h3>
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Explanation:
We're given the following
which means that we have a set of natural numbers between 30 and 56, excluding both endpoints, and the set of numbers are also multiples of 6.
So looking at the multiples of 6 that are between 30 and 56 leads us to
{30, 36, 42, 48, 54}
but we cross off 30 as we want x to be larger than that, so we get this updated final list
{36, 42, 48, 54}
There are four items in this final list so the cardinality of the set described is 4. The cardinality is just the number of items in a given set.
Let
x-----> the time in minutes
y------> the number of gallons of water
we know that
the unit rates is equal to
the unit rate is equal to the slope of the linear equation
then
<u>Problem</u>
1) How many gallons of water will Elyse use in three minutes in the shower?
For x=3 minutes
substitute in the equation above
<u>the answer is</u>
12.6 gal