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The faces of a triangle |
2014-03-24 |
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From Westun:
Your answer says that a triangle has 0 faces but isn't
the part of the shape you see the face!? Because i am having trouble
with that so could you help me!
thanks! :)
Answered by Penny Nom. |
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9 golfers in groups of 3 |
2014-03-22 |
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From Andrew:
We are a group of 9 golfers.
We play 4 rounds in 3 groups of 3.
What would be the most equitable where everyone plays with another at least 1 time...?.
Thank you.
Answered by Victoria West. |
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Riding on a Ferris wheel |
2014-03-21 |
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From Claire:
A Ferris wheel has a radius of 72 feet and its center is 85 feet above the ground. At the top of the Ferris wheel, Sam is in the topmost car. If the Ferris wheel makes two complete revolutions per minute, how high above the ground will Sam be after 10 seconds?
Answered by Penny Nom. |
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An arithmetic sequence |
2014-03-20 |
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From Xabiso:
The 10th term of an arithmetic sequence is 28 and the 7th term is 19. Calculate the common difference and the first term of the sequence.
Answered by Penny Nom. |
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Three digit padlock combinations |
2014-03-20 |
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From Edwin:
Would appreciate if you can provide me with the list of different combinations that can be obtained from a three digits number. I lost the access code of a three digits number padlock (and need to open it order to get important documents
Answered by Penny Nom. |
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Ms. Werenich's nickels, dimes and quarters |
2014-03-19 |
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From London:
Ms. Werenich has twice as many dimes as nickels and 4 more quarters than nickels. If she has $4.50, how many of each coin does she have? What would the let statements be of this problem and can you solve it?
Answered by Penny Nom. |
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Find two numbers with a sum of -8 and a difference of 4 |
2014-03-19 |
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From Elisabeth:
Find two numbers with a sum of -8 and a difference of 4. Let x be the greater number and y be the lesser number.
Answered by Penny Nom. |
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A formula for determining concrete volume in cu. yd. |
2014-03-19 |
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From Steven:
I know a couple of formulas for determining concrete volume in cu.yd. the one I use most frequently is length in feet x width in feet x thickness in inch. Divided by 324. It works every time. Where does the number 324 come from.
Answered by Penny Nom. |
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14 teams divided into two equal divisions |
2014-03-18 |
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From C:
We have 14 teams divided into two equal divisions. We want each team to play each team in their division one time and four teams from the other division one time. What is the schedule
Answered by Victoria West. |
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Markup |
2014-03-17 |
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From Lorriane:
I work for a plumbing company and our new financial manager said we should mark up all parts we buy by 142.86 to get a 30% mark up, however if we buy something for $100.00 we charge $130.00 being 30%.
If we use the other method the customers will be paying $142.86 for $100.00 and they still say that this is only 30% mark up.
We have for years been taught percentages at school and also the Government charges us 15% GST which on $100.00 would be $15.00 so who is correct.
Thank you for your wonderful website
Lorriane
Answered by Chris Fisher and Penny Nom. |
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A circle inscribed in a right triangle |
2014-03-16 |
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From akshaya:
A circle with centre O and radius r is inscribed in a right angled triangle ABC. If AB=5 cm, BC=12 cm and < B=90*, then find the value of r.
Answered by Penny Nom. |
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2 rectangular prisms are similar by a scale of 0.75 |
2014-03-16 |
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From gina:
2 rectangular prisms are similar by a scale of 0.75. The volume of the smaller prism is 27cm3 (cubed). How many cubic centimeters is the volume of the larger prism?
Answered by Penny Nom. |
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Two overlapping arcs in a square |
2014-03-15 |
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From Jean:
I have a square with side 4 cm. There are two overlapping arcs going from vertex to diagonal vertex. The other two vertices are the center of the arcs, which are shaded. How do I find the area of the shaded arcs? The overlapping arcs when shaded resemble a long thin football
Thank you for your help.
Answered by Penny Nom and Walter Whiteley. |
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The area of a 5 sided lot |
2014-03-15 |
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From Michael:
Question from michael:
This lot is in feet. 59x154x109x188x137 per the plot plan
Answered by Harley Weston. |
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40 meters increased by 20% |
2014-03-14 |
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From Kyle:
I need help finding out this question:
40 meters increased by 20%
Is the answer 800 or is it 8?
Answered by Penny Nom. |
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