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Tiling a floor |
2016-03-05 |
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joanne pose la question :
How many floor tiles 20x20 inch do I need for area of 8x 12 ft.?
Penny Nom lui répond. |
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The area of a rectangle |
2016-03-03 |
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Lucas pose la question :
The area of a rectangle is given by A=x2+18x+72
-use factoring to find an expression for the dimensions of the rectangle.
-if the area of the rectangle is 7 square feet, what are the possible values of x?
-what are the dimensions of a rectangle?
Penny Nom lui répond. |
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A geometric progression |
2016-03-03 |
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Pauline pose la question :
A woman measures the height of her child at birth and at monthly intervals afterwards.The child's height increases by 5% per month. Find the number of measurements she has made before the child's height is twice what it was at birth
Penny Nom lui répond. |
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Corrosion inhibitor in a pipeline |
2016-03-02 |
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Edu pose la question :
I have a 12 in pipeline and 5 miles long. I need to coat it with corrosion inhibitor how much chemical will I need
Penny Nom lui répond. |
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Compressed Earth blocks |
2016-03-02 |
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John pose la question :
how many 14"x10"x4" blocks do I need for a 1300sq foot house 8 foot high
Penny Nom lui répond. |
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A percentage problem |
2016-03-02 |
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jehanzaib pose la question :
if x is a percentage: e.g. 40%
than what does "x/(1+x)" = 29%. what is the explanation.
Penny Nom lui répond. |
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A rectangular prism |
2016-03-02 |
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Paula pose la question :
Trying to help with a math problem. I don't know how to set up the equation for this.
A rectangular prism has a volume of 7.875m3rd and a height of 3.5 m. What is the area of the base of the prism?
Thanks for your help!
Penny Nom lui répond. |
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An algebra problem with a sphere |
2016-02-29 |
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Sania pose la question :
If the number of square centimeters on the surface area of a sphere is equal to the number of cubic centimeters in its volume find its diameter
Penny Nom lui répond. |
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A deck that is half an ellipse |
2016-02-28 |
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Steve pose la question :
On your website, I was reading a question and your response from a girl named Angela in which you provided a formula by which her father, a welder, could figure out points on an arc corresponding to equal 3' intervals on a 30' chord where the vertex was 1' off the chord. Is there an equivalent formula when working with an ellipse? I suspect this change will make the calculations significantly more complex. I am building a deck that is half an oval, and would like to be able to mark out the perimeter by measuring the distance from regular intervals on the primary access to a corresponding point on the perimeter. I will then connect the points on the perimeter and cut a reasonably smooth arc. The length of the primary access will be 22' and width of the deck at the vertex is 9'. I would like to be able to know the distance from the primary axis to a point on the perimeter at equal intervals of 6" along the primary axis. Can you help?
Penny Nom lui répond. |
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A 13 game bet |
2016-02-28 |
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farah pose la question :
I'm trying to calculate the odds of a 13 game bet. Each game has 2 teams with 3 possible outcomes (win,draw,lose).
What are the odds.
Penny Nom lui répond. |
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10800 sq. ft equal approx what part of an acre? |
2016-02-27 |
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David pose la question :
10800 sq. ft equal approx what part of an acre
Penny Nom lui répond. |
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A word problem |
2016-02-27 |
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KRK pose la question :
amrutha thinks of a number, multiplies it by 5 & 6, devides the result by 3
and takes away the number first thought of to get an answer 36. find out
the number
Penny Nom lui répond. |
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Solve for x and y |
2016-02-27 |
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ntshidi pose la question :
Y=1/2x+4and1/4x-6
Penny Nom lui répond. |
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A place value drawing |
2016-02-24 |
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Kristin pose la question :
Make a place value drawing of a number that has
double the number of tens as ones and three times
the number of thousands as hundreds write the number.
Penny Nom lui répond. |
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The sum of the angles of a triangle |
2016-02-24 |
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Sophia pose la question :
Does every triangle add up to 180 degrees? (Such as a unique triangle)
Penny Nom lui répond. |
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