The machine was operated for 4.5 hours
A machine uses gasoline at a rate of 1/5 gallon per hour
The number of hours it will take the machine to use 9/10 gallon can be calculated as follows
1/5 = 1
9/10= x
cross multiply
1/5x= 9/10
0.2x= 0.9
x= 0.9/0.2
x= 4.5
Hence the machine was operated for 4.5 hours
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Answer:
Step-by-step explanation:
Given linear inequalities of the point (2,3)
So.
(X-2)(X-3)=0
x^2-2x-3x+6=0
x^2-5x+6=0
It's solutions is x^2-5x+6.
<h3>Answer:</h3>
-5
<h3>Explanation:</h3>
Each ordered pair is a list of an x-vaue and the corresponding f(x) value.
Hence the first ordered pair listed, (-3, -5), means that when x = -3, f(x) = -5. In other words, f(-3) = -5. By the transitive property of equality,
... y = f(-3) = -5
means
... y = -5
Answer: Second Option
Step-by-step explanation:
The probability sought is calculated by calculating the quotient between the number of possible ways to select 4 seniors from a group of 4 seniors among the number of ways to select 4 seniors from a group of 10 people.
So:
Where
is the number of ways in which a number r of people can be selected from a group of n people
Then
