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A 3 hour river cruise |
2016-05-06 |
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Jan pose la question :
A 3 hour river cruise goes 15km upstream and then back again.The river has a current speed of 2km/h.what is the boat's speed and how long was the upstream journey?
Penny Nom lui répond. |
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A six digit code |
2016-05-06 |
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Ralph pose la question :
How many combinations are possible if a "safe" has four buttons and you can use a six digit code? (these are just single press buttons..)For example, this could be one possible combination: Button 4 Button 1 Button 1 Button 3 Button 2 Button 4. Thanks!
Penny Nom lui répond. |
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Trigonometry |
2016-04-30 |
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Joel pose la question :
I am bored with what I'm learning in 6th math class and want a challenge. I decided to look at trig. I couldn't find a good resource to teach me. Could someone either explain trig to me or show me a resource? Please don't say I'm too young to learn trig. I just am trying to learn.
Penny Nom lui répond. |
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Converting ml to g |
2016-04-28 |
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Lerato pose la question :
I would like to know which formula should I use to convert ml to g?
Penny Nom lui répond. |
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A patio slab |
2016-04-27 |
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Heaven pose la question :
Allie used 11.7m^3 of cement to make a square patio. If the thickness of the patio is 15 cm,what is the length of the patio?
Penny Nom lui répond. |
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Solve 2^2x + 3(2^x) - 4 = 0 |
2016-04-27 |
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Lloyd pose la question :
Solve the equation 2^2x + 3(2^x) - 4 = 0
Penny Nom lui répond. |
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Covering a site with 6 inches of rock |
2016-04-26 |
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Carla pose la question :
if a pump house that measures 20'x16' sits in the middle of a site that is 50'x60' and you apply crushed rock to the site at depth of 6", how many yards will you need to haul?
Penny Nom lui répond. |
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One million is six percent of what number? |
2016-04-26 |
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Colleen pose la question :
One million is six percent of what number?
Thanks!
Penny Nom lui répond. |
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Dimes and pennies |
2016-04-26 |
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Renae pose la question :
Charity has 42 more pennies than dimes. Hope has 7 times as many pennies than dimes. Hope and Charity have the same number of dimes. Together they have $5.46. How many dimes and pennies do each have?
Penny Nom lui répond. |
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sin 2x - sin x = 0 |
2016-04-24 |
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lilly pose la question :
sin 2x - sin x = 0 0
Penny Nom lui répond. |
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The inverse function for f(x)=2x^2+5x |
2016-04-23 |
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Ashini pose la question :
The inverse function for f(x)=2x^2+5x
Penny Nom lui répond. |
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A triangle inscribed in a circle |
2016-04-22 |
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Olyana pose la question :
I am struggling with this question! Help!
So, there is a circle. In the circle, there is an equilateral triangle inscribed.
Each side of the triangle is 20. There is no other info given, other than
the triangle is inscribed in the circle and the sides of the triangle are 20.
I am supposed to find the radius of the circle! Please help!
Penny Nom lui répond. |
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600(1+0.05)^7 |
2016-04-21 |
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chelsey pose la question :
I am unsure on how to solve this problem, 600(1+0.05) 7 ?
Penny Nom lui répond. |
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Two tax rates |
2016-04-21 |
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Vishal pose la question :
Total amount paid annually $444 for 2014 which is inclusive for tax.
tax rate for first six month is 7% then it is changed to 15% for second six months.
calculate the total basic amount paid before tax.
the basic amount on which tax paid in first and second six month is same.
Penny Nom lui répond. |
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A sector of a circle |
2016-04-21 |
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mustafa pose la question :
In a sector of a circle, the arc length is equal to half the perimeter of a sector.find the area of a sector in terms of r
Penny Nom lui répond. |
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