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Division in different bases |
2008-12-02 |
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From MICHELLE:
DIVIDE 538 BY 14 IN BASE 2, 3, 4 & 5
Answered by Penny. |
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How high is the flagpole? |
2008-12-02 |
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From michael:
100 m from the base of a flagpole the angle of elevation of the top of the flagpole
is 7degree 16'12".how high is the flagpole
Answered by Harley Weston. |
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The area of an isosceles triangle |
2008-12-02 |
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From prateet:
the area of an isosceles triangle is 60 sq cm and one of its equal sides is 13 cm. Find the base of the triangle.
Answered by Penny. |
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Draw an octagon with an area of 18 square centimeters |
2008-12-02 |
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From Heidi:
Draw an octagon with an area of 18 square centimeters
Answered by Penny. |
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Topsoil on a soccer field |
2008-12-02 |
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From rita:
a park foreman decides that a soccer field needs 4 inches of topsoil. soccer field is 100 feet by 250 feet.
1 truckoad is 5 cubic yards. how many truckloads do we need to order. i keep confusing myself with formulas. please explain the steps to me
thank you
Answered by Penny. |
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Fact families with 4 facts |
2008-12-01 |
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From Shazia:
Question from Shazia, a parent:
When does a fact family not have 4 related facts? Give an example.
Answered by Harley Weston. |
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3 equidistant points |
2008-12-01 |
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From Damien:
How do you find 3 equidistant points (C,D,E) on a line between point A(Xa, Ya) and point B(Xb, Yb) so that AC, CD, DE and EB are all equal?
Answered by Chris Fisher. |
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Two tangent circles and common tangents |
2008-12-01 |
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From Alan:
Radius of big circle 30cm, radius of small circle 10 cm. From the diagram, the radius from the tangent do not form a semicircle but at an angle. Find the perimeter of the band around both the circle. May need to use trigonometry to find reflex angle AOB, CMD and get the major arc length AB and minor arc length CD
Answered by Penny. |
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What is so important about quadratics? |
2008-11-29 |
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From zoe:
what is so important about quadratics?
Answered by Harley Weston. |
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40lbs is what % of 75lbs? |
2008-11-29 |
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From Kieara:
40lbs is what % of 75lbs?
Answered by Penny. |
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Fonctions dérivées |
2008-11-28 |
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From Genevois:
Bonjour !
Je dois trouvé la dérivée en 2 de la fonction 40-5x².
Or, je sais comment faire et je connais la réponse mais j'ai beau refaire et refaire le calcul, mon résultat n'est jamais le meme que celui du corrigé, j'ai donc un probleme de calcul, pourriez vous donc me donner le calcul détaillé s'il vous plait ?
Merci d'avance !
Answered by Pierre-Louis Gagnon. |
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A circular plaque in a square box |
2008-11-28 |
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From kmart:
A square box has a diagonal of length 640cm.It is to contain a circular wall plaque. What is the
approximate diameter of the largest wall plaque that can be placed in the box?
Answered by Penny Nom. |
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The perimeter of a square acre |
2008-11-27 |
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From Amanda:
What is the perimeter of a square acre? Answer in feet, please.
Answered by Penny Nom. |
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Four nines to make 100 |
2008-11-27 |
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From jane:
use 4 nines in a math equation that will give you an answer of 100
Answered by Penny. |
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A weighted average |
2008-11-27 |
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From Kenneth:
I am interested in determining the answers to the following question by using some type of weighted average:
An investor has $30,000 to invest at simple interest in two accounts. One account earns 2% and the second earns 5%. How much must he invest in each account if his total return is 4% or $1,200?
Answered by Penny. |
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