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A 5 pointed star in a circle |
2012-08-05 |
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From wiljohn:
find the area of a 5 pointed star in the circle with a radius of 12.517
Answered by Chris Fisher. |
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A garden in the back yard |
2012-08-04 |
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From Lucy:
Your boss says that his wife has put an 18 × 51 foot garden in along the whole back end of their back yard. He says that this has reduced the back-yard lawn area by 24%. What are the total dimensions of his back yard? What are the dimensions of the remaining lawn area? I found this question on purplemath(http://www.purplemath.com/modules/percntof3.htm). I still don't understand how to solve it. Can you walk me through the process please?
Thank you in advance for taking the time to answer my question.
Answered by Penny Nom. |
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A plane travelling with the wind and against the wind |
2012-08-03 |
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From Gwen:
The time of a plane trip of 450 miles, with the wind is 3/5 the time of the return trip against the wind. If the plane travels 120 mph in still air, what is the wind speed?
Answered by Penny Nom. |
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Percentage increase |
2012-08-01 |
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From Jay:
When calculating percentage growth, why is (y-x)/x the same as
(y/x)-1 ??? (I seem to be stuck on the simple algebra here)...
e.g. 2011, toy was £5, 2012, toy is £10. What is the percentage
increase? So, (10-5)/5 = 1 (i.e. 100% increase), AND, (10/5)-1 = 1
(i.e. also 100% increase).
Thanks in advance.
Answered by Penny Nom. |
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5 + 5 + 5 - 5 + 5 + 5 - 5 + 5 x 0 = |
2012-07-29 |
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From Tom:
5 + 5 + 5 - 5 + 5 + 5 - 5 + 5 x 0 =
Answered by Harley Weston. |
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Three right triangles |
2012-07-26 |
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From Jora:
I am having a lot of difficulties with this question.
Name: Jora
Subject: Math
Who are you: Student
Answered by Chris Fisher. |
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The shortest chord |
2012-07-26 |
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From ANJANA:
AB is a diameter of a circle.
C is a point in AB such that CA = 9 cm and CB = 25 cm.
Find the length of the shortest chord through C.
Answered by Chris Fisher. |
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The distance between overlapping circles |
2012-07-26 |
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From Jeff:
I have two circles of different size that overlap one another:
Circle #1 has an area(A) of 731,475, so I can calculate its radius as 482.6.
Circle #2 has an area(A) of 502,517, so I can calculate its radius as 400.
If I know that the area where they overlap is 179,271, how can I calculate the distance between the midpoints of these two circles?
Answered by Chris Fisher. |
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An 8 acre property |
2012-07-25 |
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From Debra:
My property is 280 feet wide and I have 8 acres how many feet in depth would make it 8 acres
Answered by Penny Nom. |
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John's electronic store |
2012-07-25 |
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From Jora:
Electronic Store
John opened an electronic store in December. During his first month,
He sold 10 LCD TVs and 20 Plasma TVs. His income during that
month was $12800. In January, he sold 25 LCD TVs and 40 Plasma
TVs for an income of $27600.
In February he projects to sell 30 LCD TVs and 50 Plasma TVs.
If John expenses are $28900 in February, how much money will he
have after paying the expenses?
Answered by Penny Nom. |
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A regular hexagon inscribed in a circle |
2012-07-25 |
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From jim:
A regular hexagon with an area of 24√3 is inscribed in a circle. What is the area of the circle?
Answered by Penny Nom. |
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The area of a rectangle |
2012-07-24 |
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From michael:
the dimension of the rectangle are (x+5) and (x-3) find its area
Answered by Penny Nom. |
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A pile of topsoil |
2012-07-23 |
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From Perry:
I have a pile of topsoil that is 42ft long and 16ft tall shaped like a cone how many yards of topsoil do I have.
Answered by Penny Nom. |
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Bearings |
2012-07-19 |
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From olawale:
an airplne flew from a city X on a bearing of 225deg. to another city of Y a distance 200km away. it then flew from city Y on a bearing of 30deg.w to city Z a distance of 250km. calculate the distance from X to Z correct to the nearest whole number. and also calculate the bearing of city X from Z.
Answered by Penny Nom. |
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Fence post holes |
2012-07-19 |
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From Gerry:
Hello, I'm digging 30 8" dia holes, 5 ft deep for fence posts that are 4"x 4" Can you please help me figure out how much stone dust I should order for all 30 holes. Thanks
Answered by Penny Nom. |
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