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The end of a trough |
2011-10-21 |
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From Lorraine:
The vertical end of a trough has the following dimensions: width at top 4.4 ft., width at bottom 3.2 ft., depth 3.5 ft. Find the area at the end of the trough.
Answered by Penny Nom. |
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37 miles in 3 seconds |
2011-10-20 |
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From Joyce:
Jake can travel 37 miles in 3 seconds,please calculate jake's rate of speed.(round to 2 decimal places)
Answered by Penny Nom. |
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Implicit differentiation |
2011-10-20 |
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From Monica:
Find dy/dx in terms of x and y, if sin(xy)=(x^2)-y.
Answered by Penny Nom. |
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sin A/1+cos A + 1+cos A/sin A = 2cosec A |
2011-10-20 |
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From Neeraj:
sin A/1+cos A + 1+cos A/sin A = 2cosec A
Answered by Penny Nom. |
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The end of a swimming pool |
2011-10-17 |
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From Jim:
"The end of a swimming pool is a rectangle inclined 45° to the horizontal.
The edge at the surface is 12 feet long and the submerged edge is 10 feet long.
Could you draw a diagram for me ? I don't understand the Problem.
Answered by Penny Nom. |
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The area of a circle |
2011-10-17 |
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From Winney:
If the diameter of a semicircle is 3 feet what is the area.
Answered by Penny Nom. |
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Ratios |
2011-10-17 |
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From Kenneth:
Can you think of a ratio that has units that have not canceled out?
Do not use a rate as an example, for example miles per hour.
Would the following make sense? What is the book to student ratio in
a classroom with 20 students and 15 books? Student to book ratio of
20 students to 15 books or (4 students):(3 books).
Answered by Penny Nom. |
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One central circle and three tangent circles |
2011-10-16 |
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From Margaret:
You have one central circle and three or more circles tangent to the outside of the circle of varying radii. You know the x,y coordinates of the centers of the other circles. If you now remove that central circle (and pretend you never knew where it was), can you calculate its center in x,y coordinates?
Answered by Chris Fisher. |
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Expanding the size of a table |
2011-10-16 |
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From Ericka:
You are working as a carpenter in an industrial Shop. A customer came to you and inquired about the size of the table which would be fitted in her room. She informed you that she had already a 1.5 x 1m table in her room but she wanted to maximize the space by adding the same amount to is length and width. She is planning to occupy a 3 square meter place on her room for her to work comfortably. She is requesting you a written recommendation before she asked to make a table. What amount should be added to both sides to maximize a 3 square meter area?
Answered by Penny Nom. |
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A pyramid and Pythagoras |
2011-10-15 |
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From ele:
On square based pyramid, the lengths of the sides of the base are all 2m. The height from the top of the pyramid to the middle of the base is 0.5m. What are the lengths of the sides of the triangular pieces and the contained angle?
Answered by Penny Nom. |
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How much work is done? |
2011-10-15 |
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From Jean:
"A conical buoy that weighs B pounds floats upright in water with its
vertex "a" feet below the surface. A crane on a dock lifts the buoy
until its vertex just clears the surface. How much work is done ?"
Answered by Penny Nom. |
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A 6% commission |
2011-10-15 |
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From Tamara:
if you earned a gross wage of $810, which includes a salary of $90 and a 6% commission how much is the net sales?
Answered by Penny Nom. |
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Expanded form |
2011-10-12 |
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From Chris:
Write this number in expanded form
4 326 180 501
Thanks!!!
Answered by Penny Nom. |
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Twice an even number |
2011-10-10 |
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From Ron:
The number of dollars that Tracy has in her pocket is an odd number.
Hal gave Tracy $2 more than she already had in her pocket.
The number of dollars Tracy now has cannot be _________.
a) $60 b) $62 c) $64 d) 68
Answered by Penny Nom. |
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Building a custom range hood |
2011-10-08 |
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From Bill:
I'm building a custom range hood for a customer with special order material that matches
their newly installed cabinets and I need it to be perfect. The hood is basically a pyramid
but the 4th side is the flat wall at the back and a flat, rectangular top. I need to calculate
the bevel and miter of the three sides but I never was very good with geometry functions
(although I am fairly good with other math fields). I either need the calculations from you
at least (shudder) a formula or set of formulas so that I can calculate them myself.
Answered by Harley Weston. |
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