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A circle inscribed in a square acre |
2008-06-19 |
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From Scott:
Q'm trying to find out the sq footage of the corners of an acre. If an acre is 43,560 sq and if I have this right the surface area of the circumference is 1040 ft. what is the combined square footage of the 4 corners? Or the percentage the original acre?
Answered by Harley Weston. |
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9(d+5)=3(d-3)+6d |
2008-06-19 |
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From davontay:
9(d+5)=3(d-3)+6d
Answered by Harley Weston. |
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A six pointed star |
2008-06-19 |
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From Bree:
Triangles ABC and DEF are equilateral triangles with the same side length of 12cm. The polygon at the centre of the star is a regular hexagon. What is the area of the hexagon? Justify your response.
The triangles are in a shape of a six pointed star with the hexagon in the middle.
Answered by Penny Nom. |
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How far from each other will they be? |
2008-06-18 |
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From kerstin:
a women jogging at 6 mi/h passes a men biking in the opposite direction at 12 mi/h. if the maintain their speeds, how far from each other will they be 10 minutes after passing?
Answered by Stephen La Rocque. |
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A jar of pennies |
2008-06-18 |
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From Ryan:
if you are given a jar of pennies and you had to find the weight of one penny
without opening the jar.when you graph it, You have to y= the mass of the container and x= number of coins
you use the slope to find the weight of the penny how would u go about doing that?
Answered by Stephen La Rocque. |
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Interest compounded daily for 6 months |
2008-06-18 |
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From Cheryl:
Compounded interest daily on cd.....$1,000.00 at 2.53% for 6 months. How much will this CD earn?
Answered by Penny Nom. |
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A 15% discount |
2008-06-18 |
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From karonn:
Muthu bought the following items from a furniture shop which offers trade discounts of 15% on its furniture.
| Item |
list price |
| office chair |
RM 250 |
| office table |
RM 1400 |
| book shelf |
RM 3500 |
(a) find the net price of each item.
(b) find the total payment if Muthu bought 3 office chairs, 2 office tables and a book shelf.
Answered by Penny Nom. |
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Concrete blocks |
2008-06-18 |
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From marvin:
How many cement blocks do i need to build a 8 ft. tall wall x 1,300 ft. long?
Answered by Harley Weston. |
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A line which is perpendicular to another line |
2008-06-18 |
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From Emily:
How do you solve perpendicular bisectors with a slope and a point?
Answered by Penny Nom. |
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How do you change bases? |
2008-06-17 |
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From Peter:
How do you change bases eg. 121 from base 3 to base 5?
Answered by Penny Nom. |
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What is a 1% slope? |
2008-06-17 |
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From randy:
trying to figure out percentage of slope lets say i have to run a pipe 80' at a 1%slope how much pitch is that?
Answered by Harley Weston. |
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A piecewise equation |
2008-06-16 |
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From John:
AT&T charges $39.99 for 450 minutes per month. It charges 45 cents per minute over the 450 minutes.
How can I make a piecewise equation of this problem?
Answered by Penny Nom. |
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A space camera circles the Earth |
2008-06-16 |
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From Rita:
A space camera circles the Earth at a height of h miles above the surface. Suppose that d distance, IN MILES, on the surface of the Earth can be seen from the camera.
(a) Find an equation that relates the central angle theta to the height h.
(b) Find an equation that relates the observable distance d and theta.
(c) Find an equation that relates d and h.
(d) If d is to be 3500 miles, how high must the camera orbit above Earth?
(e) If the camera orbits at a height of 400 miles, what distance d on the surface can be seen?
Answered by Penny Nom. |
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Cows and chickens |
2008-06-16 |
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From damebochie:
I got this problem and want to write a system of equation for it:
Farmer Joe has cows and chickens on his farm. One day he count 76 legs and 24 heads. How many cows and how many chickens are on the farm? write a system of equations and solve.
I don't have any problem to solve it, but I just can;t see how I am going to write this system of equation.
Thank you so much for helping?
Answered by Harley Weston. |
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The diameter of a sphere |
2008-06-15 |
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From Scott:
The volume of a sphere is 6000cm cubed. What is the diameter of the sphere?
Answered by Penny Nom. |
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