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Sale price and employee discount |
2019-01-18 |
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From Margaret:
What is the formula to find the
75% off full price item that was already marked 30% off?
Answered by Penny Nom. |
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A cylinder with a cone on top |
2019-01-16 |
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From Berania:
A water tower in New York City has the shape of a cylinder with a cone on top. The cylinder has a diameter of 12 feet and a height of 15 feet. The roof has an inclination angle of 25 degrees.
(a) Determine the height of the cone to the nearest tenth of a foot.
(b) Determine the overall volume of the tower to the nearest cubic foot.
Answered by Penny Nom. |
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7 spheres on a hexagonal tray |
2019-01-14 |
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From herm:
what is the length of each side of a hexagonal tray, with the height of each side 0.75 inch, to hold seven spheres, each with a diameter of 3.00 inches? The spheres are placed such that each side of the hexagon is touched by one sphere at its midpoint (and the seventh sphere is place in the center of the "ring" of the other six spheres.
Answered by Harley Weston. |
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A binomial expansion |
2019-01-05 |
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From shifali:
if the binomial expansion of (m-nx)^3 is 1+9x+-- find the values of m & n
Answered by Penny Nom. |
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Finance charge |
2019-01-03 |
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From Kenneth:
Hello Math Central:
The calculation for determining the finance charge per $100.00 (FC/100) is determined by the following:
Finance Charge/Amount financed * $100.00 = the finance charge per $100.00
Since the denominator (amount financed) is not multiplied by $100.00, how does the result equal the finance charge per $100.00? The numerator (finance charge) is the only amount multiplied by $100.00.
Example 1. 3/4 * 6 = 18/4 not 18/24 The 4 is not multiplied by the 6.
Example 2. $49.00/$200.00 * $100.00 If $49.00 is divided by $200.00 the result is $0.245/$1.00. If $0.245/$1.00 * $100.00 = $24.50/$1.00. This answer is not $24.50/$100.00.
How does the above equal the finance charge per $100.00 when the denominator is not multiplied by $100.00?
If the division is not used to indicate the $0.245 per $1.00, the result becomes $49.00/$200.00 * $100.00 = $4,900.00/$200.00.
I thank you for any helpful reply.
..........
Kenneth
Answered by Penny Nom. |
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A quadrilateral inside a square |
2019-01-02 |
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From Swetha:
In 2*2 square ABCD, E is the mid point of the side AD. F is a
point in BE.CF is perpendicular to BE. Find the area of the quadrilateral CDEF
Answered by Penny Nom. |
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A rectangle problem |
2019-01-01 |
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From ahamed:
In rectangle ABCD, angle BCD is trisected. CE,CF meet the sides AB,AD at E,F. BE=6cm, AF=2cm so, find the area of the rectangle ABCD?
Answered by Penny Nom. |
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An octagonal deer blind |
2018-12-31 |
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From Alan:
My grandson and I would like to making a 6'x6' octagon floor for a deer
blind. He is eight yrs old and the math is outside my wheelhouse.
We need to know the length of the boards and angles of the corners please.
Thank you, Sincerely,
Alan
Answered by Penny Nom. |
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Two integers X and Y are selected at random |
2018-12-31 |
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From Kenneth:
Two integers X and Y are selected at random from the integers
1 to 8.If the same integer may be selected twice,find the probability
that;
1)X-Y=2
2)X-Y is 5 or more
3)X is greater than Y
Answered by Penny Nom. |
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y = f(x) |
2018-12-30 |
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From yogita:
What is the actual meaning of "f(x)" ? Please give me full explanation
Answered by Penny Nom. |
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Non-repeating decimals |
2018-12-28 |
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From Grace:
What is non repeating decimal
Answered by Penny Nom. |
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Solve for x in Y=1.5x + log (1+x) |
2018-12-23 |
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From Asadollah:
Please restate below expression in terms of y
Y=1.5x + log (1+x)
Thanks
Answered by Penny Nom. |
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Ten games with two possible outcomes for each game |
2018-12-22 |
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From Jin:
I'm trying to make a list to view all the possibility.
An example is if I have 2 games there's two outcomes (home/away)
I will use number to represent the teams.
0-1,2-3
All possible out comes are 0-2,0-3,1-2,1-3 right?
MY QUESTION If I have 10 games each have 2 outcomes (home/away) to win
What is all possible outcome.
0-1,2-3,4-5,6-7,8-9,10-11,12-13,14-15,16-17,18-19
Could u please provide me with a list of all possible out comes
Thanks you
Answered by Penny Nom. |
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The surface area of a dome |
2018-12-18 |
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From Chithrabhanu:
If a dom dia is 4.552 and the height is 1.21 what is the surface area?
Answered by Penny Nom. |
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cos(2x) = sin(x) |
2018-12-18 |
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From Liz:
Determine all values of x in [0,2pi] that solve the equation Cos(2x)=sinx
Answered by Penny Nom. |
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