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Mandy walks to work |
2019-09-15 |
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Kenneth pose la question :
Mandy walks to work at a constant rate. One-third of the way to work, she passes a bank.
Three-fourths of the way to work, she passes a book store.
At the bank her watch reads 7:52 A.M., and at the book store it reads 8:02 A.M.
At what time is Mandy one-half of the way to work?
Harley Weston lui répond. |
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A one foot rise in water level |
2019-09-15 |
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Stuart pose la question :
If a lake were to rise one foot - how many linear feet would it spread onto the shore line ?
What is the correlation - 1 foot of a rise = 10 feet onto the shore ? Does it depend on the lake
size - if so Lake Ontario in Canada.
Penny Nom lui répond. |
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The amount of concrete in a foundation |
2019-09-11 |
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Lorinda pose la question :
How do you calculate ( in cubic yards) how much concrete is needed for the foundation of a rectangular building 40 ft by 85 ft if the foundation walls are 8 inches thick and 7 ft 6 inches high?
Penny Nom lui répond. |
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What is -5 squared? |
2019-09-10 |
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Pori pose la question :
What is -5 squared?
Penny Nom lui répond. |
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The number of integers that satisfy some conditions |
2019-09-10 |
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Ryu pose la question :
Using only the digits 0 1 2 3 4 5 6 7 8 9 without repetition, how many integers are:
(a) Greater than 999, less than 10,000, start with an even digit and are even?
(b) Greater than 999, less than 10,000, start with an odd digit and are odd?
(c) Greater than 999, less than 10,000, start with an even digit and are odd?
(d) Greater than 999, less than 10,000, start with an odd digit and are even?
Penny Nom lui répond. |
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Problem solving |
2019-09-08 |
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Arunsi pose la question :
When a fifth of a certain number is added to 3 the result is 17. What is the number?
Penny Nom lui répond. |
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Vectors |
2019-09-06 |
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Kayla pose la question :
Hi!
Due to time constraint issues, we skipped vectors in Pre-Calc last year. However, I'm attempting to complete my AP Physics summer homework and there are 3 problems with vectors. As I explained, I have no idea even where to begin and as such I need some help.
Problem 1:
A plane flying at 90° at 45 m/s is blown toward 0° at 62 m/s by a strong wind. Find the plane's resultant velocity.
I have tried all sorts of online calculators but none are providing me with a formula I can use to solve this problem on my own.
Problem 2:
If you walk 367 m North and 785 m West what is your total displacement from your original location?
What is the problem asking for when it says displacement?
Problem 3:
A plane travels on a heading of 127.0° at a velocity of 25 km/hr. What are the horizontal and vertical components of the plane's velocity?
As you know already, I have never done vectors so I don't know what horizontal and vertical components of velocity are.
Thank you So Much for your help!! I am struggling!!
- Kayla
Penny Nom lui répond. |
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Using the Laws of Exponents |
2019-09-06 |
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Samiya pose la question :
i have been struggling with the laws of exponents so im having trouble with this question. the
question is to write (b*exponent2*c)(b*exponent5*c*exponent4*)
Penny Nom lui répond. |
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Average savings |
2019-09-06 |
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Puchu pose la question :
A student was saving an average of £2 per week for 25 weeks. He then found a part time job and after total of 45 weeks his average savings rose to £9 per week
How much did he save over 20 weeks after finding job?
Penny Nom lui répond. |
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The volume of a berm |
2019-09-06 |
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John pose la question :
I need to construct a berm:
8' tall
5' across the top
20' at the base
125' long
How much soil will I need
Harley Weston lui répond. |
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How was math created? |
2019-09-03 |
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Phu pose la question :
How was math created?
Harley Weston lui répond. |
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A negative minus a negative |
2019-09-03 |
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Maggie pose la question :
Why is a negative minus a negative a negative?
Penny Nom lui répond. |
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Can one equation with two variables be solved algebraically? |
2019-08-30 |
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Don pose la question :
Can one equation with two variables be solved algebraically?
Penny Nom lui répond. |
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400 in 7.5 billion |
2019-08-28 |
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Emma pose la question :
What is a better way to express 400 in 7.5 billion?
My daughter has a rare condition, I want to know the answer to say “she is 1 in a ...”
Penny Nom lui répond. |
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David Is 6 years older than his sister Delia |
2019-08-27 |
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Abigail pose la question :
David Is 6 years older than his sister Delia. In 10 years the sum of There age 52. how old are David and Delia today
Penny Nom lui répond. |
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