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The product of two numbers |
2018-06-19 |
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From amie:
the product of two numbers is 108.when the larger number is divided by the smaller number the quotient is 3. What are the number.tnx
Answered by Penny Nom. |
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The domain of f(g(x)) |
2018-06-18 |
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From Joshua:
What are the restrictions of the domain of f(g(x))?
Answered by Penny Nom. |
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A question about the empty set |
2018-06-17 |
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From Andrey:
Hello there!
I got that an empty set is a subset of every set.
There is a question.
Is an empty set an element of every set?
∅ ⊆ {x}True
∅ ∈{x}?
Sorry if the question is easy. A set theory is a bit confusing.
Answered by Penny Nom. |
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The number of terms in an arithmetic sequence |
2018-06-15 |
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From Don:
how many terms in arithmetic sequence are there if the first term and the last term are 3&59 respectively in common difference is 4?
Answered by Harley Weston. |
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The base for a circular pool |
2018-06-10 |
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From Adam:
How many sheet of 4ft by 8ft foam would I need to lay under a pool 15dt in diameter
Answered by Penny Nom. |
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A tangent to a circle |
2018-06-10 |
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From Bellle:
Determine the equation of the circle which has its center at (3,1) and tangent 3x-4y+5=0
Answered by Penny Nom. |
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The inverse square law |
2018-06-05 |
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From Amy:
Question about inverse square law ;
Hi, I'm trying to understand some nuances about this law and
have been reading about it a lot online and trying out some homework
for personal interest (hobby ) - not school related.
I understand that the simple formula is ; 1/d^2
I was wondering about what appears to be an oddity to me, that
I came across when I was working with a test example I found at this
link ;
http://www.softschools.com/formulas/physics/inverse_square_law_formula/82/
The problem that caught my interest was this one on that page ;
"1) If a bright flashlight has a light intensity of 15.0 candela at a distance 1.00 m from the lens, what is the intensity of the flashlight 100.0 m from the lens?"
So I have a few different questions about this, but the most important
one is, what does it mean if we replace the "1" in ; 1/d^2 with a different value such as a ratio in the form of a decimal value, so instead we have something like this ;
0.75/d^2
???
Does this ratio represent a curve then?
I am thinking that the "1" in the normal formula represents a straight line
Some of the links I was researching ;
http://wisptools.net/book.php?c=3&s=2
http://www.softschools.com/formulas/physics/inverse_square_law_formula/82/
https://www.nde-ed.org/GeneralResources/Formula/RTFormula/InverseSquare/InverseSquareLaw.htm
Answered by Penny Nom. |
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Are those two equations the same? |
2018-06-05 |
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From Francisco:
Solve for y: 2(x+3)=y x=5
Solve for y: (x+3)2=y x=5
Are those two equations the same?
Answered by Penny Nom. |
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The difference between two numbers is -3 |
2018-06-05 |
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From Hannah:
write a pair if integers whose difference is -3 ( given that the greater number is 8 )
Answered by Penny Nom. |
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The volume of a berm |
2018-06-04 |
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From Mike:
Have a berm that is 700’ long, 29’ y’all and needs a 20’ top with 5-1 slope on one side and 3-1 slope in the other
Answered by Penny Nom. |
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Two odd integers |
2018-06-04 |
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From Pleroma:
The product of two alternate odd integers exceeds three times the smaller number by 12.
What is the larger number?
Answered by Penny Nom. |
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$96 is 66 2/3% of what dollar amount? |
2018-05-31 |
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From mary:
$96 is 66 2/3% of what dollar amount?
Answered by Penny Nom. |
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Taking 6 pills |
2018-05-29 |
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From Dave:
My motives are simple, I want to get revenge on my brother who, unbeknown to me,
repeatedly cheated when we played on-line Scrabble! Can you help? - he has posed this
question knowing that I'll struggle to get the solution.
Question: He is taking 6 pills a day, if he takes the pills in a different order each day,
how long will it be before he takes the pills in the same order on the same date again?
I think leap years might come in to it!
Will I confess to using you guys? - I'll think about that one.
Answered by Penny Nom. |
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Monthly Pension |
2018-05-28 |
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From Kenneth:
Hello:
I have a question regarding how the units cancel in the following:
A company uses the following calculation to determine the monthly payment for its employees as they retire:
1.1% * average 5 years highest salary * years of service
If an employee worked 33 years and his average 5 year salary is $30,705.17, what is his monthly payment?
I used the following to determine his monthly payment, but I am not sure how the units cancel especially the years.
1.1% * $30,705.17 * 33 years divided by 12 months/year
I determined his payment as $928.83 per month, but the year units do not cancel unless the 1.1% is per year.
Is the correct calculation 1.1%/year * $30,705.17 * 33 years divided by 12 months/year so that the units cancel properly?
The $\$30,705.17$ is an average for 5 years of working. It is not $30,705.17 per year.
I thank you for your assistance.
Answered by Penny Nom. |
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What is the diameter of the observable universe? |
2018-05-27 |
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From peter:
The diameter of the observable universe is calculated to be 92 billion light years. What would that distance be in miles given a light year is 6 trillion miles?
Answered by Penny Nom. |
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