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y = sin(2x) |
2007-03-22 |
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From bader:
sin(2x)
find dx/dy
Answered by Penny Nom. |
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The velocity of an aircraft |
2007-03-22 |
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From William:
Hello,
I don't understand how to work this problem. Thanks in advance for your help!
A jet moving at 500.0 km/h due east moves into a region where the wind is blowing at 120.0 km/h in a direction 30.0 degrees north of east. What is the new velocity and direction of the aircraft relative to the ground?
Answered by Penny Nom. |
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Which solid figure has 4 more edges than vertices? |
2007-03-22 |
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From dawn:
which solid figure has 4 more edges than vertices?
Answered by Penny Nom. |
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The height of a pole |
2007-03-22 |
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From clyde:
I am trying to determine the height of a pole by using 3 angles top 30.8 deg, center 17.3 deg, and bottom -5.8 deg. Can you point me in the right direction ?
Answered by Stephen La Rocque. |
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The Reuleaux Triangle |
2007-03-22 |
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From Dani:
Hi!
My question is:
Determine how the area of the Reuleaux Triangle of width h compares to the area of a circle of width h?
Thanks!
Dani
Answered by Penny Nom. |
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The volume of a hemisphere |
2007-03-21 |
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From Sarah:
How do you calculate the volume of a hemisphere?
Thanks.
Answered by Penny Nom. |
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Adding and Subtracting Rational Expressions |
2007-03-21 |
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From Pricilla:
Pricilla
I do not know how to do this problem. Don't know where to start.
[(5)/(2x-8)]+[(3x^2+15)/(x^3-4x^2+5x-20)]
Answered by Stephen La Rocque. |
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Angles of depression |
2007-03-21 |
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From romaine:
a woman of height 1.4m standing on top of a building of height 34.6m veiws a tree some distance away.
she observes that the angle of depression of the bottom of the tree is 35 degrees, and the angle of depression of the top
of the tree is 29 degrees. assume that the building and the tree is on level ground.
(a) calculate the distance of the woman from the top of the tree measured along her line of sight.
(b) determine the height of the tree.
Answered by Stephen La Rocque. |
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Another mixture problem |
2007-03-21 |
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From roger:
I have 6800 gallons of a 17% glycol solution. I need to add how many
gallons of 100% glycol to this to raise the concentration to 22%, also 20%?
Answered by Stephen La Rocque. |
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A mixture problem |
2007-03-21 |
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From roger:
I have 100 gallons of 100% glycol. I need to make this a 20% solution,
would I just add this to 400 gallons to make the 20% glycol solution?
Answered by Stephen La Rocque. |
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Synthetic division |
2007-03-21 |
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From Edward:
Hi there,
please, explain me synthetic division of polynomial functions.
for examp.: 3x3 + 2x2 +4 divide by x-2 (number after variable x is the powre of x )
Thank you. Edward.
Answered by Melanie Tyrer. |
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What makes a relation a function? |
2007-03-21 |
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From san:
What makes a relation a function?
Answered by Haley Ess. |
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The quotient of two integers |
2007-03-21 |
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From Sarah:
Without actually dividing, how can you decide whether the quotient of two integers is positive, negative, or 0.
Answered by Penny Nom. |
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Examples of algebra used in life |
2007-03-21 |
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From Arianna:
i need to find about 5 different examples of algebra used in life, and im not sure where to start. does anyone have any suggestions as to topics that i should choose for my project?
thank you so much for all of your input.
Arianna Leigh
Answered by Penny Nom. |
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Cost of ribbon |
2007-03-20 |
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From kelly:
we are doing rate
Ribbon costs $1.44 for 3m
a). What is the cost per meter?
b). How much would 5 m of ribbon cost?
c). How much ribbon could you buy for $12.00
Answered by Penny Nom. |
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