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Angle of incline |
2005-05-15 |
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Kyle pose la question :
What is the degree of incline of a 12 foot plank that goes from 10.5 inches on one end to zero inches on the other?
Penny Nom lui répond. |
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How many cubic feet in a yard? |
2005-05-13 |
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Carol pose la question :
How do you measure a cubic foot? How many cubic feet in a yard?
Penny Nom lui répond. |
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Maximizing revenue |
2005-05-13 |
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Jackie pose la question :
1.The manager of a 100-unit apartment complex knows from experience that all units will be occupied if the rent is $400 per month. A market survey suggests that, on the average, one additional unit will remain vacant for each $5 increase in rent. What rent should the manager charge to maximize revenue?
2.During the summer months Terry makes and sells necklaces on the beach. Last summer he sold the necklaces for $10 each and his sales averaged 20 per day. When he increased the price by $1, he found that he lost two sales per day.
a. Find the demand function, assuming it is linear.
b. If the material for each necklace costs Terry $6, what should the selling price be to maximize his profit?
Penny Nom lui répond. |
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Adding consecutive integers |
2005-05-13 |
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Yas pose la question :
i need some help with my work which is to investigating sums of consecutive numbers for example: 15= 4+5+6 and 15=1+2+3+4+5
Penny Nom lui répond. |
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Surface areas |
2005-05-11 |
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Jessica pose la question :
How can I demonstrate to my high school students the reason for the formulas for the surface area of a prism, right cylinder, and regular pyramid, and right cone?
Penny Nom lui répond. |
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sin x + sin 2x + sin 3x + sin 4x = 0 |
2005-05-10 |
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Elia pose la question :
I tried many times, but can't get to solve the following question:
sin x + sin 2x + sin 3x + sin 4x = 0
Chris Fisher lui répond. |
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Some triangle problems |
2005-05-06 |
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A student pose la question :
1.use the
heron's formula to find area of triangle ABC to nerest tenth
A.a=21 b=28 c=11
B.a=23 b=28 c=12
2.Find the nearest tenth the altitude of the longest side if a=3 b=3 c=5
3.the length of each side of a rhombus is 10 cm the length of one diagonal
is 12 cm find the area to the nearest square centermeter
Penny Nom lui répond. |
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y = x+2 and y = 2x - 1 |
2005-05-03 |
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Kimberley pose la question :
Question:
y=x+2
y=2x-1
Penny Nom lui répond. |
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16x^2+20x-12x-15 |
2005-05-03 |
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Tanya pose la question :
how they got (4x+5)(4x-5) from
16x2+20x-12x-15=4x(4x+5)-3(4x+5)=(4x+5)(4x-5)
Penny Nom lui répond. |
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Graphing an inequality |
2005-05-02 |
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Janice pose la question :
I need to know how to graph inequalities. I need to know just abot everything. From graphing an equation to shading.
Leeanne Boehm lui répond. |
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Two problems |
2005-04-29 |
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Sara pose la question :
#1 A boat is traveling in a straight line across a river from point D, directly opposite town P, to a point Q, two thirds of the distance from town P to town R. Towns P and R are towns on the same side of the lake and are 18 miles apart. Line DQ passes through town S, which is 8 miles north of town R. Points P, Q, and R are collinear. What is the length of QS in Miles?
How many miles does the boat travel across the river?
#2 What is the area of a regular hexagon if the perimeter is 24cm?
Penny Nom lui répond. |
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Volume and surface area of a prism |
2005-04-29 |
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Melissa pose la question :
Can you please tell me if the volume and surface area of a prism can ever be the same? Could you please explain why or why not.
Walter Whiteley lui répond. |
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Problème de géométrie |
2005-04-29 |
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Christian pose la question :
C un cercle de centre I et de rayon 3 cm.
SORT est un carré inscrit dans le cercle C
M est un point quelconque de C Calculer la somme des carrés des distances de M aux sommets du carré (MS2 + MO2 +MR2 + MT2)
Cette somme dépend-elle de la position de M sur le cercle ?
Claude Tardif lui répond. |
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Area of a region on a map |
2005-04-28 |
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Balachandar pose la question :
Pl. find the attached map.
1. Can u pl. find out the total square are of WLMZ
2. Can u pl .find out the total square are of WXYZ -- { A }
3. Can u pl .find out the total square are of XLMY -- { B }
Pl .help me to find out the above.
.....
Chris Fisher and Penny Nom lui répond. |
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A quadratic equation |
2005-04-27 |
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Chris pose la question :
Solve using the quadratic formula
9x² + 9x - 5 = 0
I don't get the same answer as in the text book which is
-3+/- √29/36
Hope you can help....
Penny Nom lui répond. |
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