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Write a rule for the sequence |
2013-02-20 |
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Angelia pose la question :
Write a rule for the sequence. Then, find the unknown term. 1 3/8, 1 ¾, 2 1/8, _______, 2 7/8 Think: The pattern is increasing. Add 1/6 to find the next term. Rule: _______________
Penny Nom lui répond. |
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How can I teach how to change bases? |
2013-02-20 |
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Tammy pose la question :
How can I teach how to change bases? For example 80 base 10 changed to base 3.
Thank you!
Harley Weston lui répond. |
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Solve 8 logx > x |
2013-02-19 |
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Fulvio pose la question :
Hi, could you solve this equation in algebraic form:
8logx>x
Harley Weston lui répond. |
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A trig word problem |
2013-02-18 |
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Amy pose la question :
Susan notices an unusual rock formation at an angle of 30 degrees to the right of her direction of travel as she is white water rafting. as she continues in a relatively straight path for 20 m, the rock formation appears to be at 45 degrees to the right. she cotninues until the rock formation is directly to her right. how far is she fromt he rock formation?
Penny Nom lui répond. |
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Extraneous solutions |
2013-02-18 |
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Eileen pose la question :
(5x+4)^1/2-3x=0
Penny Nom lui répond. |
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Related rates |
2013-02-17 |
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Ishaak pose la question :
A hemispherical bowl is filled with water at a uniform rate. When the height of water is h cm the volume is π(rh^2-1/3 h^3 )cm^3, where r s the radius. Find the rate at which the water level is rising when it is half way to the top, given that r = 6 and the bowl fills in 1 minute.
Penny Nom lui répond. |
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The continuity of f(x,y)=ln(x^2+y^2) |
2013-02-17 |
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anu pose la question :
the question says we have to find the points in the plane where the function is continuous:
f(x,y)=ln(x^2+y^2) . here we aren't given a particular point (x,y) where we have to check a function's
continuity.
what is to be done if we have to check continuity over the whole domain of the function?
please help .
Harley Weston lui répond. |
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Swimming upstream and downstream |
2013-02-15 |
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Kimberly pose la question :
a beaver swims down to its lodge 4 times faster than it swims upstream. how many times faster is its speed in still water than the speed of the stream?
Penny Nom lui répond. |
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Chocolate bars and puzzles |
2013-02-15 |
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sandy pose la question :
Alan bought a box of puzzle and two bar of chocolate for $28.
Jan bought 3 boxes of puzzle and a bar of chocolate similar to
Alan for $69.
a) Find the cost of a box of puzzle
b) Find the cost of a bar of chocolate
Penny Nom lui répond. |
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An electron in a TV tube |
2013-02-15 |
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anu pose la question :
an electron in a TV tube is beamed horizontally at a speed of (50^6) m/sec. towards the face of a tube 40 cm away
about how far will the electron drop before it hits? no information has been provided of initial height from where it is beamed.
Robert Dawson lui répond. |
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A word problem involving toys |
2013-02-14 |
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sandy pose la question :
Each boy gets 5 toys.Each girl gets 3 toys.There are 150 pupils.
The boys had 74 more toys than girls.
How many boys?
How many girls?
Penny Nom lui répond. |
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A curve in 3-space |
2013-02-14 |
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pardeep pose la question :
we have to show that the curve r(t)=(cos t)i+(sin t)j+(1-cos t)k ,0<=t<=2pie;
is an ellipse by showing it to an intersection of a right circular cylinder and a plane.
i got the eqn. of the cylinder but did not get the eqn of plane.
Harley Weston lui répond. |
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Dropping supplies from an airplane |
2013-02-14 |
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Claire pose la question :
An airplane flying at an altitude of 3500 feet is dropping supplies to researchers on an island. The path of the plane is parallel to the ground at the time the supplies are released and the plane is traveling at a speed of 300 mph.
a) write the parametric equations that represent the path of the supplies
c)How long will it take for the supplies to reach the ground?
d) how far will the supplies travel horizontally before they land?
Penny Nom lui répond. |
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Is a line lying in a plane an open or a closed region? |
2013-02-13 |
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pardeep pose la question :
please help with this question on the open and closed intervals ::
Is a line lying in a plane an open or a closed region? my teacher says it is a closed region reasoning out that it contains all it boundary points. please help how is it so?
Harley Weston lui répond. |
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The height of an aerial |
2013-02-12 |
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ASIT pose la question :
A vertical aerial stands on a horizontal ground. A surveyor positioned due east of the aerial measures the elevation of the Top as 48 degree. He moves due south 30metre and measure the elevation as 44 degree. determine the height of the aerial
Penny Nom lui répond. |
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