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Selecting a card |
2014-02-16 |
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Akarsh pose la question :
Cards numbered 1 to 1000 were put in a box.Ali selects cards at random.What is the probability that Ali selects a card containing at least one'3'?
Penny Nom lui répond. |
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The growth of a tree |
2014-02-16 |
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Emily pose la question :
If a tree is 10 ft tall after 2 years and 25 ft tall after 5 yrs , find the rate of change of growth
Of the tree if y is the height in ft and x is the number of years.
Penny Nom lui répond. |
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What is the exponential form of 1/square root of 6v? |
2014-02-16 |
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Prince pose la question :
What is the exponential form of 1/square root of 6v
Penny Nom lui répond. |
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Simultaneous fractional equations |
2014-02-15 |
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benjamin pose la question :
hi math central. benjamin here. during class, i had problem with this topic. normally i wont have problems with math but this topic i just too hard for me. please help i am having exam and test next week on this topic
here is the question:
using substitution method, solve the simultaneous equation.
(x+1)/(y+2)=0.5
(x-2)/(y-1)=1/3
Penny Nom lui répond. |
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The grade of a road as a percent |
2014-02-14 |
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Emily pose la question :
What is the grade of the road shown below expressed as a percent rounded to one decimal place?
Rise is 40feet
Run is 380 feet
Penny Nom lui répond. |
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Rolls of window film |
2014-02-14 |
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Travis pose la question :
This question is probably close to the same question as "roll of paper"
We have Rolls of Window Film that we are trying to figure out an equation for a spreadsheet that we can use to "inventory" our window film.
We use a caliper tool to measure the thickness of the roll in millimeters.
the core thickness = 1.90mm
Full Roll thickness(including core) = 9.08mm to 9.12mm
Film thickness = 0.06
Full Roll of Film is supposed to average 1200" of film
What equation could we use to get the approximate inches left remaining on the roll if we measured the roll including the core with the Caliper tool in Millimeters?
Harley Weston lui répond. |
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Some mixed nuts |
2014-02-12 |
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Andrew pose la question :
How many kg of mixed nuts that contain 30% peanuts must Paul add to 6kg of mixed nuts that contain 38% peanuts to make a mixture that contains 33% peanuts?
Penny Nom lui répond. |
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A word problem |
2014-02-11 |
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cyril pose la question :
In a rectangle,the length is 1.5 times the breadth.if the length is shortened by 3 m and the breadth is lengthened by 3 m, the rectangle will be a square. Calculate the dimensions of the rectangle.
Penny Nom lui répond. |
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Water in a conical funnel |
2014-02-11 |
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Marcus pose la question :
Water is running out of a conical funnel at the rate of 1 inch^3/sec. If the radius of the base of the funnel is 4 in. and the altitude is 8 in., find the rate at which the water level is dropping when it is 2 in. from the top.
Penny Nom lui répond. |
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How many cubic centimeters are in a cubic meter? |
2014-02-11 |
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merylin pose la question :
How many cubic centimeters are in a cubic meter? Use a sketch to explain your reasoning.
Penny Nom lui répond. |
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A sequence |
2014-02-10 |
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Joshua pose la question :
hello..the question I have today is... A sequence... 1,5,14,30,55,91 find the general terms.
Penny Nom lui répond. |
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A square garden |
2014-02-09 |
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reeta pose la question :
Inside a square garden of side 158m, a road 4m wide is built all around. What is the area of the remaining part of the
Penny Nom lui répond. |
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A ball in a box |
2014-02-09 |
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kenneth pose la question :
I have 2 questions.What is the radius of the largest ball that will fit into a box that has the inside dimensions of 6feet by 8 feet by 10feet. and the second question is how many cubic feet of concrete will you need to complete a patio that is 20 feet long by 15 feet wide by 5 inches in hight.
Penny Nom lui répond. |
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8 golfers, 11 rounds |
2014-02-09 |
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Clare pose la question :
I am leading a group of 8 golfers who will be playing 11 rounds each
at the end of next month and have been tasked with coming up with
a schedule that allows, as close as possible, that has everyone playing
an equal number of rounds with each other. Do you have any suggestions?
Penny Nom lui répond. |
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The volume of a cone |
2014-02-08 |
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hibba pose la question :
why is the volume of right circular cone divided by 3?
Penny Nom lui répond. |
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