What is the sign of 48\dfrac29 + \left(-39\dfrac89\right)48 9 2 +(−39 9 8 )48, start fraction, 2, divided by, 9, end fractio
1 answer:
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Answer: Option A. The solution set is (4,5)
Step-by-step explanation:
Solve the equation for<em> </em>y to obtain the form of the equation of the line.
You have:
y=-x+9 (The slope is -1 and the y-intercept is 9)
y=x+1 (The slope is 1 and the y-intercept is 1)
When you graph it you obtain the graph shown in the figure attached.
The solution is the intersection of the lines.
Then, the solution set is (4,5)
Answer:
The maximum fuel economy of the car is 25.57225
Step-by-step explanation:
we are given
where
where s represents the average speed of the car, measured in miles per hour
So, we have to maximize f(s)
So, firstly we will find derivative
now, we can set it to 0
and then we can solve for s
To find maximum fuel economy , we can plug s into f(s)
So,
The maximum fuel economy of the car is 25.57225