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Fractions and units |
2014-04-28 |
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From Aaron: I can't do this math problem. please help.
Find 200m over 1 min times 60 min over 1 hr times 1 km over 1000 m.
the choices are a. 300 km/hr b. 12 km/hr c. 300 m/hr and d. 12 m/hr Answered by Penny Nom. |
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2 cars driving towards each other |
2014-04-27 |
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From Joakim: 2 cars driving towards eachother , the distance between them is 162km. they meet after 2 hours. car A is driving with 4/5 of car Bīs speed. what is the speed of each car... Answered by Penny Nom. |
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A triangular chicken pen |
2014-04-27 |
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From Cierra: Margaret has two lengths of fence, 20 meters and 24 meters, for two sides of a triangular chicken pen. The third side will be on the north side of the barn. One fence length makes a 75° angle with the barn. How many different pens can she build if one fence is attached at the corner of the barn? What are all the possible lengths for the barn side of the pen?
Not sure what they are asking here... please show step by step what to do! Thank you so much! Answered by Penny Nom. |
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The volume and radius of a sphere |
2014-04-27 |
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From grace: How do you find the radius of a sphere when all you know is the volume? Answered by Penny Nom. |
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The derivative of sin(x) |
2014-04-26 |
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From Lucky: f(x)=Sin(x), by first principle its f'(x)...show me how to solve such problem. Answered by Penny Nom. |
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A schedule for 9 teams on 3 fields for 18 days |
2014-04-25 |
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From Scott: I need to schedule 9 teams on 3 fields for 18 days with no buys. Two teams play while other practices in field(little guys). Two fields have backstops and other is open field. Would like to have even time on each diamond if possible. Thank you Answered by Victoria West. |
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Solve for theta |
2014-04-25 |
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From ALASTAIR: Hi, The question asks Solve for 'theta' cos2theta=sintheta x costheta.
Substituting for cos2th either 1-2sin^2th or 2cos^2th does not give an equation in either sine or cosine alone how do I solve this please? Answered by Penny Nom. |
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An octagonal pad |
2014-04-25 |
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From George: Hi,
I need to pour a cement pad in the shape of an octagon that allows
for 12" of clearance around the tank I will be putting on it.
The tank has a radius of 16'. Answered by Penny Nom. |
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A trig problem |
2014-04-25 |
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From srishti: Consider the points P= (-sin(a-b),-cosa), Q=(cos(a-b),sina), R=(cos(a-b+c),sin(a-c), where 0 Answered by Chris Fisher. |
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What was the selling price? |
2014-04-25 |
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From Con: Apple built 40 32GB wifi iPads, gave away two in a contest, and sold the rest at two times the manufacturing price. If the company's total profit was $10,782, what is the selling price of one of these iPads? Answered by Penny Nom. |
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What time was it when joe's brother passed him? |
2014-04-25 |
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From Nathan: joe left home in his bike at 10:00 am, traveling 21 km/h. At noon, his brother set out after him on his motorcycle, following the same route. if the motorcycle traveled at 63 km/h, what time was it when joe's brother passed him? Answered by Penny Nom. |
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A quadratic equation given the roots |
2014-04-23 |
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From Sarah: How do you find the quadratic formula when you're given just the roots ... X=-3 X= 1/3
Thanks ! Answered by Robert Dawson. |
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Two 9 hole golf leagues |
2014-04-23 |
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From Sally: I need help scheduling two 9 hole leagues. Here are the variables:
- Leagues alternate each week starting on the front and back
- League A starts at 4:30 with 7 groups and League B starts at 5:15 with 8 groups (all use carts and must be teed off by 5:30)
- Regular play must continue, customers who have started before league play begins have preference to continue their round whether they are playing 9 or 18 holes.
Thank you!!! Answered by Victoria West. |
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Golf for 6 |
2014-04-21 |
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From barbara: We are a group of 6 golfers. We play in groups of 3 for 5 days.
How can I arrange the groups that everybody plays with everybody else at least once?
Thanks. Answered by Victoria West. |
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Golf with 3 teams of 20 |
2014-04-21 |
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From Joshua: Thank in advance for this great service
Golf - new - 3 teams of 20 - to create 20 unique groups of 3
For example use 3 teams of 3
1a 2a 3a
1b 2b 3b
1c 2c 3c
So groups are
1a 1b 1c
2a 2b 2c
3a 3b 3c
Groups can only have one a, one and one c - and that combo should be unique Answered by Victoria West. |
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