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The number of gallons of water in a basement |
2010-05-23 |
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From George:
A basement with dimensions 68 ft long by 42 ft wide by 10 ft deep is flooded to the ceiling calculate the number of gallons of water in the basement. 70
Answered by Penny Nom. |
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Which values of x satisfy (x-2) / (x+4) <7 |
2010-05-23 |
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From Rocco:
Which values of x satisfy (x-2) / (x+4) <7
Answered by Harley Weston. |
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Divisibility by 3 |
2010-05-23 |
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From Cathleen:
To math central. I have to do a maths extension question that I don't understand. At first I thought I did.
It is about the dividing by three. In one part of the question, it asks me to show that the rule of division by three does not work for 23142 with a little 5 down the bottom.
What doe base 5 mean? We first thought that the little 5 down the bottom meant multiplying y the power of five.
Can you please tell me what it means so I can finish this question?
Answered by Penny Nom. |
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When will the second truck catch up to the first? |
2010-05-22 |
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From Josie:
At 9:00 a.m. a truck leaves the truck yard and travels west at a rate of 45 mi/hr. At 11:00 a.m., a second truck leaves along the same route, travelling at 60 mi/hr. When will the second truck catch up to the first?
Answered by Tyler Wood. |
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Four digit numbers |
2010-05-22 |
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From tyeisha:
Whats all the four digit numbers you can come up with using numbers 0-9
Answered by Tyler Wood. |
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The area of a triangle |
2010-05-22 |
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From jose:
haw many square feet are in a triangle 30 feet high with a 100 ft base?
Answered by Tyler Wood. |
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How many bags will it take to fill this? |
2010-05-22 |
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From David:
A garden lot..360 square feet and 6 inches deep..you want to fill this with mulch and use 2 cubic. foot bags...how many bags will it take to fill this? Thank you...Dave
Answered by Tyler Wood. |
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Percentage of Group B's score |
2010-05-22 |
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From Carolyn:
If the CONTROL Scorer A scored 5 minutes of Stage 1 sleep, and the compare Scorer B scored 7 minutes of Stage 1 sleep out of the same sample, what is the % similar/same is Scorer B to the Control Scorer A?
Answered by Tyler Wood. |
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converting y=mx+b into ax+by+c=0 and vice versa |
2010-05-22 |
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From Paulo:
converting y=mx+b into ax+by+c=0 and vice versa
Answered by Tyler Wood. |
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The hypotenuse of a triangle |
2010-05-22 |
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From linda:
find the length of the hypotenuse of a triangle with legs of 12in. and 17in. round to the nearest hundredth
Answered by Tyler Wood. |
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How far is the runner from the starting point? |
2010-05-22 |
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From Richard:
A marathon runner runs 6 miles south and then 8 miles east. How far is the runner from the starting point?
Answered by Tyler Wood. |
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Difference of cubes |
2010-05-22 |
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From Anad:
how can we prove a^3 - b^3 is equal to (a-b)(a^2+ab+b^2)?
Answered by Penny Nom. |
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Extraneous solutions |
2010-05-22 |
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From Joe:
Question from Joe, a parent:
w+3 2w
----- - ----- = 1
w2-1 w-1
W2 is = w squared
-4
The answer is w= ------
3
but have no idea how this was solved. any help is appreciated. Thanks.
Answered by Penny Nom. |
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A circular oil slick of uniform thickness |
2010-05-22 |
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From Susan:
Hi,
I have this problem on a homework assignment and just can't seem to figure it out:
A circular oil slick of uniform thickness is caused by a spill of 1 m^3 of oil. The thickness of the oil is decreasing at the rate of .001m/h. At what rate is the radius of the slick increasing when the radius is 8.
Answered by Penny Nom. |
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The low leg height of a shutter |
2010-05-20 |
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From brian:
I work for a shutter company and am in need of a formula to figure
out what the low leg height would be if given the width of shutter,
the high point of arch top and the radius. example would be a 18" wide
shutter with a 80" high leg on the right side and a 30" radius. I would
need a way to figure what the low leg height (left side of shutter)
would be. Or if given width, low leg height and radius what the high
side would be? If any of this can be given in laymen's terms it would be
much appreciated.
Thanks,
Brian
Answered by Harley Weston. |
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