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A 2 digit number |
2016-02-08 |
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Lloyd pose la question :
The sum of digits of a certain 2 digit number is 7.
Reversing its digits increases the number by 9.
Find the number
Penny Nom lui répond. |
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Backfilling a rectangular hole for a shop foundation |
2016-02-08 |
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Jeremy pose la question :
Hello, I'm going to be backfilling a rectangular hole for a shop foundation and need to know how much concrete and gravel I'm going to need to fill it in. The shop foundation is 38 feet wide by 30 feet long and 4 feet deep, there is also a concrete perimeter going inside the foundation that measures 16 inches wide and goes all the way around the inside of the foundation
Penny Nom lui répond. |
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The equation of a vertical line |
2016-02-07 |
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Kagiso pose la question :
The equation for a vertical line that goes through the point (7; -3) is?
Penny Nom lui répond. |
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38 is what percent of 400? |
2016-02-07 |
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chris pose la question :
38 is what percent of 400?
Penny Nom lui répond. |
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An exercise with factorials |
2016-02-07 |
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vidhi pose la question :
find the value of n: (1-1/2) (2-2/3) (3-3/4)...(15-15/16) = n!/16
Penny Nom lui répond. |
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How many acres? |
2016-02-06 |
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JOHN pose la question :
How many acres of land is in a strip that is 5000 foot long and 100 feet wide?
Penny Nom lui répond. |
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A metal gate |
2016-02-06 |
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Carl pose la question :
I am a welder and I build gates. I have to put holes in a rail and then bend the rail
in a curve. The problem is that the holes in the curved rail must line up with holes
in the other straight rails. How do I calculate where to put the holes in the rail
before I bend it? I will send a drawing if necessary.
Harley Weston lui répond. |
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The midpoints of the sides of a quadrilateral |
2016-02-05 |
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Andrea pose la question :
The segments, joining, in order the midpoints of consecutive sides of a quadrilateral form a parallelogram.
Penny Nom lui répond. |
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When will Scott and Jill have earned the same amount? |
2016-02-04 |
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kalia pose la question :
Scott starts with $10 and earns $5 and hour. Jill starts with $40 and earns $3 and hour. when will the two have the same amount of money in the same hours?
Penny Nom lui répond. |
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The height of a triangle |
2016-02-03 |
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Brooklyn pose la question :
How do I figure out the height of a triangle when it only tells me the base of he triangle? And vice versa.
Penny Nom lui répond. |
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A two car competition |
2016-02-02 |
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Christian pose la question :
Question: Two cars are racing to a fixed point and back. One car travels 70 MPH both ways
While the other travels 60 MPH there and 80 MPH back, which car won the race?
It is not a tie.
Penny Nom lui répond. |
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Division base 5 |
2016-02-01 |
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Jenalee pose la question :
I am having problems with a dividing bases question. I reviewed two that I could find in the database and tried the question as shown but I am still getting the wrong answer.
My question is 32\24043 to the base of 5 for both.
Penny Nom lui répond. |
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Golf for 6 - 2 three balls |
2016-02-01 |
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Andy pose la question :
We are shortly having a golf holiday in Phoenix. There are 6 people playing 6 rounds, so we will play in 2 three balls. Is there a combination of pairings that ensures everyone plays with each other the same number of times. Many thanks for your help ! Andy
Victoria West lui répond. |
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Which term of the series 2+7+12+...is 152? |
2016-02-01 |
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francis pose la question :
whice term of the series 2+7+12+...is 152?
Penny Nom lui répond. |
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Simplify |
2016-02-01 |
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Sabira pose la question :
Simplify step by step
5x/8 + 7y/18 = 6
Penny Nom lui répond. |
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