Tutors Answer Your Questions about Quadratic-relations-and-conic-sections (FREE)
Question 42120: The distance a car can travel on a certain amount of fuel varies inversely with its speed. If a car traveling 50 mph can travel 300 miles on 10 gallons of fuel, how far could the car travel on 10 gallons of fuel at 60 mph?
Thank you
Click here to see answer by fractalier(6550)   |
Question 42120: The distance a car can travel on a certain amount of fuel varies inversely with its speed. If a car traveling 50 mph can travel 300 miles on 10 gallons of fuel, how far could the car travel on 10 gallons of fuel at 60 mph?
Thank you
Click here to see answer by psbhowmick(878)  |
Question 42388: It is your task to find an example of each conic section in nature or in technology or in architecture, or any other place. Please label the item and describe the conic section it uses. If possible, tell why the conic section is used.
Click here to see answer by Nate(3500) |
Question 43057: "Graph the equation, then choose the correct coordinates of the foci. Keep the graphs as they may be asked for at a later time. y^2= 5x^2+25." I keep trying to graph equations like this and find the foci, but the answers I get are never one of the answer choices. For this one I did:
y^2= 5x^2+25
y^2-5x^2= 25
(y^2-5x^2)/-5=25/-5
-1/5(y^2/-5-x^2)=-5/-5
y^2/25+x^2/5=1
y^2/(5)^2+x^2/(square root 5)^2=1
After that I had my x and y intercepts so I made my graph and tried to find the foci.
b^2=a^2-c^2
square root 5^2= 5^2-c^2
5= 25-c^2
5-25= -c^2
20= c^2
square root 20= c
I'd appreciate your help. These graphs have really been frustrating me. Please me know what I'm doing wrong. Thanx!
Click here to see answer by psbhowmick(878) |
Question 43057: "Graph the equation, then choose the correct coordinates of the foci. Keep the graphs as they may be asked for at a later time. y^2= 5x^2+25." I keep trying to graph equations like this and find the foci, but the answers I get are never one of the answer choices. For this one I did:
y^2= 5x^2+25
y^2-5x^2= 25
(y^2-5x^2)/-5=25/-5
-1/5(y^2/-5-x^2)=-5/-5
y^2/25+x^2/5=1
y^2/(5)^2+x^2/(square root 5)^2=1
After that I had my x and y intercepts so I made my graph and tried to find the foci.
b^2=a^2-c^2
square root 5^2= 5^2-c^2
5= 25-c^2
5-25= -c^2
20= c^2
square root 20= c
I'd appreciate your help. These graphs have really been frustrating me. Please me know what I'm doing wrong. Thanx!
Click here to see answer by Nate(3500) |
Question 43517: ) It is approximately 300 miles from Chicago, Illinois, to St. Louis, Missouri. Allowing for various traffic conditions, a driver can average approximately 60 miles per hour.
a) Write a linear function that expresses the distance traveled, d, as a function of time, t.
Click here to see answer by Nate(3500) |
Question 43680: Please help me solve this problem that I'm having difficulty solving. Thank you so much for your immediate assistance. smccollough1
4x^2+4y^2+4y=15
Please include the following:
a) equation
b) opens up and down, right or left
c) vertex
d) axis of symmetry
e) x-intercept (if they exist)
f) y-intercept (if they exist)
g) table of values
h) graph
Click here to see answer by Nate(3500) |
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