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The area of a regular pentagon |
2008-06-02 |
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From Jenna:
I would like to know if there is a formula to find the area of a regular Pentagon that is not inscribed in a circle only apothem and side length are given.
Answered by Penny Nom. |
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Substitution into a formula |
2008-06-02 |
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From beth:
Given q(x) = 7xsquared + 9, find q(-7)
These were the choices I had for the answers to this problem
1.) 343
2.) -40
3.) 334
4.) -89
5.) 352
Answered by Penny Nom. |
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Can the witness' statement be correct? |
2008-06-02 |
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From Leria:
The model S= radical 30df describes the relationship between the speed of a car , the conditions of the road, and the length of the skid marks when the car slams on the brakes. S is the speed of the car in miles per hour,
d is the length of the tires' skid marks in feet and f is the coefficient of the friction for the road.
In an accident, a car makes skid marks 85 feet long. The coefficient of friction is 0.6. A witness says that the driver was traveling faster than the speed limit of 35 miles per hour. Can the witness's statement be correct? Use algebra to explain your answer.
Answered by Penny Nom. |
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Pourcentage |
2008-06-02 |
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From ferdjoukh:
un article passe de 12 euros à 10 euros.
quel est le pourcentage de réduction?
et quelle est l'opération à faire pour obtenir le résultat?
merci
Answered by Antoine Letarte. |
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A bridge is built in the shape of a parabolic arch |
2008-06-02 |
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From megan:
A bridge is built in the shape of a parbolic arch. The bridge has a span of 192 feet and a maximum height of 30 feet. Find the height of the arch at 20 feet from its center. I need the equation and what to fill into the equation...please and thankyou!
Answered by Penny Nom. |
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The length of a piece of fabric |
2008-05-31 |
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From Jeanie:
How do I convert square yards to linear yards? I know the width of the fabric is 54" wide. I am at a loss of what the formula is to figure this out; please help! Thanks!
Answered by Penny Nom. |
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50 cubic yards of dirt |
2008-05-31 |
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From Mary:
50 cubic yards of dirt is allowed.
16 feet of width and 1 foot of depth.
How far can can you cover in length? in feet, yards or miles?
Answered by Janice Cotcher. |
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Lowest common denominator |
2008-05-31 |
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From marlene:
cant get the common lowest denominator of 10,46,64
Answered by Janice Cotcher. |
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Substitution method |
2008-05-30 |
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From taquicia:
2y-x=3
x=5+y
Answered by Janice Cotcher. |
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One chord is twice as long as another |
2008-05-30 |
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From Stacey:
In a circle, If one chord is twice as long as another, is the longer chord's arc also twice the size of the smaller chord? True or False
Answered by Chris Fisher. |
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x/4 = 3 1/2 |
2008-05-30 |
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From Kelsey:
How do you solve for "X" in the problem below?
X
--- = 3 1/2
4
--Kelsey
Answered by Victoria West. |
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4x^3 - 6x + 2 = 0 |
2008-05-28 |
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From paul:
4x^3 - 6x + 2 = 0
Answered by Janice Cotcher. |
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The surface area of an "egg shaped" object |
2008-05-28 |
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From Tom:
How do you calculated the surface area of an "egg shaped" object (ovoid) ?
Answered by Harley Weston. |
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A problem with a kite |
2008-05-28 |
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From randee:
A kite that has been secured to a stake in the ground with a 20 foot string. The kite is located 12 feet from the ground, directly over point x. what is the distance, in feet between the stake and point x
Answered by Penny Nom. |
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Le volume du tas |
2008-05-28 |
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From ribot:
je cherche la formule mathematique du volume d un tas de cailloux formule employée dans le bâtiment
Answered by Thierry Moisan. |
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