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Dealing with surds |
2015-11-14 |
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From Agnes:
simplify (1-√3)(1÷3+√3)
Answered by Penny Nom. |
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The diagonal of a rhombus |
2015-11-14 |
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From Om:
In a rhombus ABCD, angle A=60° and side AB=6 cm. Then diagonal BD is ?
Answered by Penny Nom. |
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The area of a domed roof |
2015-11-13 |
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From Brandon:
I have a tank with a 13' radius that has a domed roof of 3.5' tall How do I figure out the area in SQFT?
Answered by Penny Nom. |
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A three digit number |
2015-11-13 |
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From Tina:
The sum of the digits of a 3-digit odd number is 13. The digit in the tens place is 4 less than the digit in the hundreds place and 3 more than the ones digit. What is the number?
Answered by Penny Nom. |
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Working with fractions |
2015-11-12 |
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From muhammad:
There are 1200 pupils in a school, 2/3 of them are girls, 1/4 of the boys are overweight.How many boys are overweight?
Answered by Penny Nom. |
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A volume in cubic yards |
2015-11-12 |
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From James:
The first formula for figuring cubic yards of concrete need is length in feet, times width in feet, times depth in actual inches, divided by 320. Such as, 150x 50 feet x 4inches divided by 320 = cubic yards. How and why does this formula work?
Answered by Penny Nom. |
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A concrete container |
2015-11-12 |
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From Karstin:
The exterior of a concrete container will be 10 feet by 8 feet by 4 feet tall. The walls and the bottom are 6 inches thick. What will it cost to construct it if concrete is $98.95/cubic yard?
Answered by Penny Nom. |
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Fencing around a rectangular field |
2015-11-11 |
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From Darlene:
Question from Darlene, a parent:
A farmer has 10,000 meters of fencing to use to create a rectangular field. He
plans on using some of the fencing to divide the rectangular field into two
plots of land by constructing a fence inside the rectangle that is parallel to one
of the sides. Let X be the width of the rectangular field. Write an equation
to express the area of the field as a function of X. Find the value of X that
maximizes the area of the field.
Answered by Penny Nom. |
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Roof Square footage |
2015-11-11 |
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From Todd:
Question from Todd:
Good Day.
I have to figure out the square footage of a quonset style roof that's not playing by the rules The building dimensions (rectangular) are 63'x135' the height of the roof is 9.25'. It not an entire Quonset, It's that style of roof,(curved). There are concrete block walls 10' up to the metal roof.
Thank you!
Todd
Answered by Harley Weston. |
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The combination to a locker |
2015-11-11 |
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From Jason:
Hi,
I can't seem to open my locker cause I forgot the combination, the numbers are 1-8
Without repeat for 4 number for example 1234 or 2345 for numbers 1-8 without any repeat.
Answered by Harley Weston. |
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The derivative of x^1/3 |
2015-11-08 |
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From omar:
hi can help me
am teacher ask me about x^1/3 Derivation definition .
Answered by Penny Nom. |
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Is 22/7 bigger or smaller than 3.14? |
2015-11-06 |
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From Natalie:
Is 22/7 bigger or smaller than 3.14?
Answered by Harley Weston. |
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A schedule for 8 golfers over 5 days |
2015-11-04 |
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From Ged:
Hope you can help with the following to save next years arguments !
Schedule for 8 golfers playing as pairs in 2 X 4 balls on 5 days.
No player to pair same player more than once and to have played with each player
In the 4 ball.
Thanks.
Answered by Victoria West. |
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The domain of cos2x/(sinx-2) |
2015-11-02 |
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From Ameen:
Find the domain of:
f(x) = cos2x/(sinx-2)
Answered by Penny Nom. |
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Factoring a trinomial |
2015-11-02 |
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From Eric:
2v(squared) +11v +5
Answered by Penny Nom. |
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