







Why 1/3 in the volume of a cone? 
20181020 

Keith pose la question : In the formula for the volume of a pyramid, Volume = 1/3 * base * height, where does the 1/3 come from, intuitively? Penny Nom lui répond. 





f(x) and f(x) 
20181019 

Simran pose la question : what is difference between f(x) compared to f(x) on graph Penny Nom lui répond. 





Angular speed 
20181018 

Akidima pose la question : A bicycle wheel rotates uniformly through 2.0 revolutions in 4.0 seconds .
What is the average angular speed of the wheel Penny Nom lui répond. 





Filling a candy box 
20181016 

Stephanie pose la question : My child had the question: A candy box has the following measurements.
10x6x4Find the total volume. (We got that one right 240in3)
But... then it said “How many 1/2 inch cubed pieces of candy can fit in the box?
This is where we disagree. Please help. Penny Nom lui répond. 





Covering 6 acres with dirt 
20180927 

Scott pose la question : How many cubic yards of dirt would come from 6 acres, 6 ft. deep? Penny Nom lui répond. 





The area of a trapezoid 
20180924 

An other pose la question : AB272 feet: AC 690 feet; CD330 Feet; DA669Feet Calculate the area in feet and Acres. Penny Nom lui répond. 





Two curves 
20180923 

Megan pose la question : How do i find the interception points of xy=2 and y=x+3? Many thanks! Penny Nom lui répond. 





The pointslope equation for a line 
20180923 

Sally pose la question : The equation of the line in pointslope form for the line passing through the point ( 4, 6) and parallel to the line y = 6x + 2. Describe the steps. Penny Nom lui répond. 





An inequality with no solution 
20180920 

Alena pose la question : I'm trying to help with a homework problem. Can you please help me?
2kx  3k < 2x + 4 +3kx
We are solving for "k" with no solution. Penny Nom lui répond. 





Compatible numbers 
20180919 

Jessica pose la question : Hello, I'm having trouble helping my daughter she is in 5th grade and I tell you her math is so much different then the math I learned in school and I been out of school for quite some time so it's a little hard for me.
Anyway her math is very confusing for me they are saying use compatible numbers to find two estimates.
I have no idea what that even mean I tried using Google but still don't get it .
The problem is 12 divided by 478 using compatible numbers to find two estimates.... please help Penny Nom lui répond. 





The sum and difference of two numbers 
20180917 

Feni pose la question : The sum of two numbers is 4. The difference of the two numbers is 2. What are the two numbers? Penny Nom lui répond. 





A gas and oil mixture 
20180916 

April pose la question : For a new motor bike, the recommended ratio of gas to oil is 27:1 by volume. How much gas and how much oil are needed to fill a 14 L tank on a new motor bike?
Thank you Penny Nom lui répond. 





Predicting the number of fish in a lake 
20180916 

April pose la question : A researcher catches 30 fish in a pond, attaches a marker to their fin and releases them. The next day she places a large net in the water and catches 9 fish. 3 have the marker attached to their fin. Can she predict the number of fish in the pond???
Thank you Penny Nom lui répond. 





The volume of a hotel soup pan 
20180915 

Melanie pose la question : If the hotel pan measures 12 inches long x 5 inches wide x 6 inches tall, how many quarts of soup will the hotel pan hold? Penny Nom lui répond. 





Velocity 
20180914 

Adrian pose la question : If Jill was traveling at 300 miles in 4 hours due South what was his velocity in miles per second. Penny Nom lui répond. 

