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The inverse of y=x^2+x+c |
2016-12-21 |
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Sam pose la question :
What is the inverse of y=x^2+x+c for x?
Penny Nom lui répond. |
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The inverse of y = x(x - 2) |
2016-12-21 |
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Sasha pose la question :
Hello, I recently stumbled upon this question and I haven't been able to figure it out.
Why is the inverse of y=x(x-2) not a function?
Suggest a domain restriction which would ensure that the inverse is a function.
Thank You :)
Penny Nom lui répond. |
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The area and radius of a circle |
2016-12-19 |
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india pose la question :
How do you find the radius of a circle if only the area is given to you?
Penny Nom lui répond. |
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Joining a fitness center |
2016-12-18 |
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Salem pose la question :
A fitness center offers a special price for group-class students. The cost of registration is 30 dollars and then you have to pay 25 dollars per month. What is the rule of the equation in the light of
c=---m+----?
Penny Nom lui répond. |
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980 cubic yards of dirt |
2016-12-17 |
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Jondi pose la question :
I am trying to visualize 980 cubic yards of dirt by using a metaphor.
Would this be the size of a car?
A fire engine?
A semi-trailer?
How many trucks would you need to haul away 980 yards of dirt?
Penny Nom lui répond. |
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1/1-cosine(2x) - 1/1+ cos(2x) |
2016-12-14 |
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Sean pose la question :
1/1-cosine(2x) - 1/1+ cos(2x)
Penny Nom lui répond. |
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Divisibility of 3n^5+7n |
2016-12-14 |
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Parag pose la question :
Question from Parag, a student:
if n is a natural number,then 3n^5+7n is divisible by
a)2
b)3
c)5
d)7
i got the answer but still i need a valid alternate approach.
Penny Nom lui répond. |
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3^2x-5=27 |
2016-12-14 |
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danaja pose la question :
solve for the following 3^2x-5=27
Penny Nom lui répond. |
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How far apart are the boats? |
2016-12-13 |
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Halley pose la question :
Two boats leave port at the same time. Boat A travels east at a speed of 12 km/hr. Boat B travels southwest at a speed of 14 km/hr. After two hours, how far apart are the boats? North is 0 degrees. How do I figure this out.
Thanks
Penny Nom lui répond. |
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x^2 = -16 |
2016-12-12 |
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A student pose la question :
x to the second power = -16
what number solves the equation?
Penny Nom lui répond. |
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The area of a city block |
2016-12-08 |
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Miura pose la question :
A city block is three times as long as long as it is wide.if the distance around the block is 0.48 kilometers, what is the area of the block in square meters?
Penny Nom lui répond. |
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A sales tax of 7% |
2016-12-07 |
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Kenneth pose la question :
Hello:
If a sales tax of 7% is placed on every $1.00 of merchandise for sale, is it correct to indicate
the tax as 7%/ per $1.00 or 7%/$1.00? If the calculation is expressed as 7%/$1.00 X $5.00,
the tax is not $0.35 but 0.35. Is a tax rate of 7% incorrectly represented as 7%/$1.00
since the dollar unit cancels from the multiplication?
I thank you for your reply.
Penny Nom lui répond. |
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The sum of three integers is 30 |
2016-12-06 |
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Vaishnavi pose la question :
_+_+_:30. Blanks are to be filled by(1,3,5,7,9,11,13,15) and numbers can be repeated.
Penny Nom lui répond. |
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Profit and loss on two shirts |
2016-12-06 |
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Mahesh pose la question :
A man purchases one shirt and one T-Shirt for Rs. 6000. He sells the shirt at a profit of 20% and T-Shirt at a loss of 10%, as a result he gains 2% on whole transaction. what is the cost price of the T-Shirt ?
Penny Nom lui répond. |
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Two boys on the same route |
2016-12-06 |
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Abbey pose la question :
Starting from the same spot, one boy completed a route in 9 minutes and another boy completed it in 15 minutes. When will both boys be at the same starting point at the same time again?
Penny Nom lui répond. |
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