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A toad climbs the stairs |
2008-01-22 |
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From Kate:
The question is:
A small toad is sitting at the bottom of the stairs. He wants to get to the 10th step, but is having some difficulty. He jumps up 2 steps and then back 1 each time. How many jumps will he take to reach the 10th step?
Answered by Stephen La Rocque and Penny Nom. |
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How many combinations of 8614 are divisible by 7? |
2008-01-22 |
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From Rebecca:
How many combinations of 8614 are divisible by 7 equally (with no remainder)?
Answered by Penny Nom. |
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1/2, 1/2, 3/8, 1/4, 5/32, 3/32, 7/128 |
2008-01-22 |
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From Neil:
Find the next two terms in the following number sequence
1/2, 1/2, 3/8, 1/4, 5/32, 3/32, 7/128
Find a general rule for the nth term of the sequence
Answered by Penny Nom. |
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A regular polygon |
2008-01-22 |
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From Andy:
Hi. i am looking for an equation to find the radius of any given regular polygon, knowing the length of one of it's sides and how many sides it has..
for instance. A pentagon with 10 unit side , a hexagon with a 10 unit side, a septagon with a 10 unit side or tougher still a triangle wit a 10 unit side.
I am mathematically challenged so please try to keep it in layman's terms.
Basically im looking to array rectangles, inside corner to inside corner around a common center. The rectangle's widths change but are always equal/ uniform among one array.
Im not looking for the answer but am looking for the formula.
Thanx in advance,
Andy
Answered by Stephen La Rocque. |
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The cosine of an angle |
2008-01-21 |
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From Kristine:
Find measure of unknown side
cosA=0.5
Answered by Harley Weston. |
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The three angles of a triangle |
2008-01-21 |
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From val:
two angle in a triangle equal 120 degree. what is the measure of the third angle?
Answered by Penny Nom. |
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The equation of a line |
2008-01-20 |
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From Sara:
The question is:
Write the equation of a line that is parallel to y=3x-2 through the point (-5,9).
I think the correct equation for this is y=3x+24.
But I have to write it in standard form, and I can't seem to figure out how to do that. Please answer soon! Thanks!
Answered by Stephen La Rocque and Penny Nom. |
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The line through (-22 ;-1) and (-23, -2) |
2008-01-20 |
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From Zachery:
i have a slope that equals 1/1 and my coordinates are (-22;-1) and (-23;-2) and i am trying to change it into the equation y=mx+b and the farthest that i've gotten is y=1x_ (i can not find out how to find b.) So i was wondering if you could help me find out what b is because i have got no clue!!!!!
Answered by Penny Nom. |
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Choosing 6 numbers from 42 |
2008-01-19 |
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From Marcus:
If i have 42 numbers to choose from and i could only choose 6 numbers at a time without choosing the same number twice in the same row, how many possibilities are there?
Answered by Penny Nom. |
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calcul des hh,mn,sec |
2008-01-19 |
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From gillot:
bonjour, mon fils à des additions et soustractions d'horaire et je n'arrive pas à trouver
la règle pour lui espliquer comment il faut faire
il y a t il une formule pour les additions et soustractions
merci par avance pour vos réponses
Answered by Claude Tardif. |
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Choosing 10 numbers from 40 numbers |
2008-01-18 |
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From Antwan:
I have 40 numbers........number 1-40.
I want to know how many times i can chose 10 of those numbers without picking the same exact sequence twice if its even possible?
Answered by Stephen La Rocque. |
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Two circles in a rectangle |
2008-01-18 |
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From Alex:
One side of a rectangle is 10 and the other is x.
Two circles with equal radii are inscribed in the rectangle and like a Venn Diagram, the circles overlap.
Each circle touches the top and bottom of the rectangle and the left circle touches the left side of the rectangle and the right circle touches the right side of the triangle.
The distance between the centre of each circle is 2x/3.
Find x
Answered by Penny Nom. |
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Maximize income |
2008-01-18 |
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From Chris:
Lemon Motors have been selling an average of 60 new cars per month at
$800 over the factory price. They are considering an increase in this
markup. A marketing survey indicates that for every $20 increase, they
will sell 1 less car per month. What should their new markup be in order
to maximize income?
Answered by Stephen La Rocque and Harley Weston. |
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A word problem |
2008-01-18 |
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From Marouf:
How can you make a word problem for 6 2/3 and solve the word problem? I'm having trouble. Please help
Answered by Stephen La Rocque. |
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Two bikers race on a circular track |
2008-01-17 |
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From Abby:
Two bikers race on a circular track. Biker A can circle the track in 8 minutes, and Biker B can circle the track in 6 minutes. From the start of the race, how many minutes will it be before Biker B overtakes Biker A?
Answered by Stephen La Rocque and Penny Nom. |
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