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Converting speeds |
2007-05-10 |
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From jason:
A boy runs 36 metres in 6.50 seconds.How fast is he going in miles per hour
Answered by Stephen La Rocque. |
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Converting mass and volume of water |
2007-05-10 |
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From Shian:
Hello please help, I just can't seem to get the convertion thing and my mom tried to help but I still don't get it. How many grams does 1 milliliter of water weight? I was told 1g. How many grams does 0.1 liter of water weight? I was told 0.1g. Can you tell me if the answers given are correct with an explaination that I can understand? Thank you.
Answered by Stephen La Rocque. |
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Algebra problem |
2007-05-10 |
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From Sam:
What is the proper answer for this equation?
3x - 2 ( 5y (4x +2))
Answered by Stephen La Rocque. |
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Angle of Elevation |
2007-05-10 |
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From Micky:
Two Buildings are on opposite sides of a street 40 feet wide.
The taller of the two buildings is 580 feet tall. The angle of depression
from the top of the tallest building to the shorter building across the
street is 57 degrees. Find the height of the shorter building.
Answered by Stephen La Rocque. |
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Pre-algebra volume of a prism |
2007-05-10 |
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From Brenda:
Find the volume of a triangular prism with a base of 5 cm by 5 cm and a height of 12.5 cm. Round to the nearest tenth.
Answered by Stephen La Rocque. |
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A ton of sawdust |
2007-05-10 |
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From David:
I am trying to do a conversion. A tractor trailer is loaded with 165 cubic
yards of sawdust (I do not know the actual weight). I knw the wholesale
cost as $1,000 for this amount, but would like to convert this to find out
what the equivalent cost for a metric ton would be.
Answered by Stephen La Rocque. |
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How many faces on a prism? |
2007-05-10 |
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From Samad:
How many faces does a rectangular prism have?
Answered by Penny Nom. |
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Understanding log equations |
2007-05-10 |
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From Sean:
The number, N, of people who have heard a rumor spread by mass media at time, t, in days is modelled by N (t) = a / 1+ be^ -kt. If 50 people have heard the rumour initially and 300,000 people hear the rumour eventually, find a and b. If the rumour is initially spreading at the rate of 500 people per day, find k.
Answered by Penny Nom. |
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Ordered pairs |
2007-05-09 |
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From chasity:
a teacher wishes to schedule a quiz during part of a two-hour class. the equation 1+e=120 can be used to find the available lecture time "1" given that "e" minutes are planned for the quiz. determine the ordered pairs that satisfy the equation if the domain is {20,30,45,60}
Answered by Penny Nom. |
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Interest Rates |
2007-05-09 |
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From Julia:
Using the formula I=PRT to figure out the missing variable.
P=$9530, T=7 months, A= $9919.14
Answered by Stephen La Rocque. |
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What number am I? |
2007-05-09 |
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From austin:
i am a positive integer if im squared -5 is added to me. -10 is subtracted from me, and the remainder is divided by 2 the result is 7. what integer am i
Answered by Stephen La Rocque. |
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Area of a pentagonal lot |
2007-05-09 |
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From Mimi:
I would like to know the square footage of a pentagon with the
following measurements:
Property is .43 of an Acre
Front: 57.11'
NW: 105.78'
S: 120'
SE: 145'
E: 102.86'
I don't want you to try to show me how to work thru the problem since
I will never comprehend it. For some reason, I am unable to perform these
kinds of equations. I will greatly appreciate your help.
Answered by Penny Nom. |
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Area of irregular surfaces |
2007-05-09 |
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From Dustan:
I am working on a way to compute very accurate
areas for irregular surfaces by using the idea of a largest possible circle...
Answered by Chris Fisher. |
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Find the real solutions in this trig equation |
2007-05-09 |
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From tony:
list all real solutions of the equation that are in the interval [0,2π)
2cos(x) + tan(x) = sec(x)
Answered by Penny Nom and Stephen La Rocque. |
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Cubic feet of sand |
2007-05-09 |
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From Paul:
I have an above ground pool that is 585 sq feet. I want to cover the bottom in 3 inches of sand. The sand supplier says I need about 6 cubic yards, based on your prior answers on this subject. I come up with 1.8 yards. What is the correct amount?
Answered by Stephen La Rocque. |
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