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The weight of water in a swimming pool |
2009-03-10 |
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From ely:
How much does the water in a swimming pool 20 ft long, 10 ft wide, and 6 ft deep weigh?
Answered by Penny Nom. |
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66 2/3% |
2009-03-10 |
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From Traci:
Please convert 66 2/3% into a decimal and a fraction
Answered by Penny Nom. |
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A polyhedron |
2009-03-10 |
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From Mollie:
Hi, my name is Mollie and I'm in 5th grade. Here's the math problem I have for homework tonight:
"Larissa made a model of a polyhedron using 8 pieces of clay for the vertices and 18 straws for the edges. What type of
polyhedron did Larissa make?"
Thanks.
Answered by Penny Nom. |
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A right angle |
2009-03-09 |
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From bill:
I am a cotractor & i am laying out some piers in an L shape i need to know how to tell if they are square one side of my L is 18 feet the other is 11 feet 6 inches what is the formula to find out what the distance from point to point should be for square . I appreciate any help u can give me thank you
Answered by Penny Nom. |
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The slope of a line |
2009-03-09 |
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From Shannon:
Find x such that a straight line passing through (2,x) and (x+1, 3) has slope 2x+1/x-1
Please help! Missed this class, so I have no notes and the book doesn't have an example like this.
Thank you!
Answered by Penny Nom. |
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Related rates |
2009-03-09 |
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From Megan:
A plane flying with a constant speed of 330 km/h passes over a ground radar station at an altitude of 3 km and climbs at an angle of 30°. At what rate is the distance from the plane to the radar station increasing a minute later?
Answered by Harley Weston. |
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2 types of season passes |
2009-03-09 |
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From Jaquanta:
A local water park has 2 types of season passes. Plan A costs a one - time fee of $142 for admission plus $8 for parking every trip. Plan B costs a one - time fee of $56 for parking plus $25 for admission every trip. How many visits must a person make for plan A and plan B to be equal in value?
Answered by Penny Nom. |
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What percent commission does Aaron earn? |
2009-03-09 |
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From Jerry:
Aaron works part time as a salesperson for an electronics store. He earns $4.75 per hour plus a percent commission on all of his sales. Last week Aaron worked 20 hours and earned a gross income of $143.75. If his total sales for the week were $1,500, what percent commission does Aaron earn?
Answered by Penny Nom. |
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Trifecta |
2009-03-09 |
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From Annie:
I want to know how many combinations are there for the first 3 horses in
a race of 20 horses. For example, the horses can come in 1, 5, 7 or
7, 5, 1 which are totally different combos. I've only found formulas
where the 1, 2, 3 and 3, 2, 1 are counted as the same combo.
In horse racing every combo is different.
Thank you.
Answered by Penny Nom. |
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Substitution in a quadratic |
2009-03-09 |
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From Kieran:
How could I work this out please
f(x)= 3xsquared - 4x + 2
if f(2x)
Answered by Penny Nom. |
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The height of a right triangle |
2009-03-08 |
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From Anah:
Could you please tell me the formula for me to calculate the height of a triangle. I have the angles and side lengths. I am trying to calculate the height of an right triangle, the dimensions are as follows:
The Base/Hypotenuse is: 8x
Side A is 2x.
Side B is 2x.
Answered by Harley Weston. |
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A property that decreases in value every year by 10 percent |
2009-03-07 |
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From PEter:
there is a competition problem where a cottage is worth 25000 years, but it decreases in value every year by 10 percent. Without a calculator, is there a way to find after how many years, the cottage will be worth 2500? (besides multiplying it out and besides logs)
Answered by Stephen La Rocque. |
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Cubic feet |
2009-03-07 |
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From A student:
What is cubic feet and how do I use it in this question? (picture below)
Answered by Stephen La Rocque. |
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A walkway through a park |
2009-03-07 |
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From felicia:
a diagonal walkway through a park is 18 meters long. If the park is a square, how long is one of its sides to the nearest tenth of a meter?
Answered by Penny Nom. |
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The sides of a triangle |
2009-03-07 |
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From felicia:
ona map, tannersville, chadwick, and barkersvile for a triangle. Chadwick is
70 miles from Tannersville and Barkersville is 90 miles from Tannersville. Which is a
possible distance between Chadwick and Barkersville?
a. 5miles
b. 10 miles
c. 150miles
d. 200 miles
Answered by Harley Weston. |
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