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Projectile motion equations |
2007-06-12 |
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From Dillon:
Ron throws a ball straight up with an initial speed of 60 feet per second from a height of 5 feet. Find parametric equations that describe the motion of the ball as a function of time. How long is the ball in the air? When is the ball at its maximum height? What is the maximum height of the ball?
Answered by Stephen La Rocque. |
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Converting dollars to gallons |
2007-06-12 |
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From Cynthia:
How do I solve this problem?
If a family uses .20 per 100 gallon of water. How many gallons would
$10.00 cost, divided amoung 3 people?
Thanks, Cynthia
Answered by Stephen La Rocque. |
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A round pool |
2007-06-12 |
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From Gene:
How many yards of concrete to put a 28' round pool...it is to be 4 inches deep
Answered by Penny Nom. |
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What is his regular hourly rate? |
2007-06-12 |
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From Gilligan:
John Ritter, who is paid time-and-a-half for hours greater than 40, had a gross weekly wage of $442 for 48 hours. What is his regular hourly rate?
Answered by Penny Nom. |
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Comparing and ordering fractions |
2007-06-12 |
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From virgil:
Order the fractions
2/5, 2/3, 2/7
Answered by Penny Nom. |
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Throwing a ball from the top of a building |
2007-06-12 |
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From Gilligan:
s = distance (in feet)
Building height = 96 feet
t = seconds
Use s = 96 + 80t - 16t^2 to answer the question given below.
QUESTION:
After how many second t will the ball pass the top of the building on its way down?
Answered by Penny Nom. |
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24 Game: 7, 5, 3, 3 |
2007-06-11 |
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From Natasha:
In the maths game called '24', how can you solve 7, 5, 3, 3?
I like playing a maths game called '24'.
Answered by Stephen La Rocque. |
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How high does the ladder reach? |
2007-06-11 |
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From Madi:
A ladder 8 ft long resting on a house makes a 60 degree angle with the ground. how far up the house does it reach?
Answered by Stephen La Rocque. |
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A sequence of circles |
2007-06-11 |
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From Ann:
Please help with solving the following problem!!!
A circle is inscribed in an equilateral triangle with a side of length 2.
Three circles are drawn externally tangent to this circle and internally
tangent to 2 sides of the triangle. 3 more circles are drawn externally
tantgent to these circles and internally tangent to 2 sides of the triangle. if
this process continued forever, what would be the sum of the areas of all the
circle? the answer 1 parent came up with was Pie over 2, but we don't
know how he did it. Can you please show the work or explain the answer to
this problem?
Thank you
Ann
p s my daughter is in 9th grade math.
Answered by Steve La Rocque, Chris Fisher and Penny Nom. |
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How many terms in this sequence? |
2007-06-11 |
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From Jesse:
How do I find how many terms are in the sequence? 51, 48, 45, ...., -75
Answered by Stephen La Rocque and Penny Nom. |
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A cord of wood |
2007-06-11 |
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From Wendi:
A cord of wood is equal to a stack of wood that is 8 feet long, 4 feet wide, and 4 feet high. How many cords of wood are in 1 cubic foot?
Answered by Stephen La Rocque. |
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15 = 19.2 t (time) - 4.9 t squared |
2007-06-11 |
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From Nicole:
15 = 19.2 t (time) - 4.9 t squared
Answered by Penny Nom. |
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The area of a quadrilateral |
2007-06-10 |
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From Lucy:
Calculate the area of the quadrilateral ABCD.
AB= 4.1cm, BC = 7.6cm, AD= 5.4 cm, CD= ?
Angle ABC = 117, Angle ADC = 62.
Give your answer correct to 3 significant figures.
Answered by Stephen La Rocque and Penny Nom. |
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A right rectangular prism |
2007-06-10 |
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From Wendy:
if a right rectangular prism volume is 36cubic cm how can i find the base and height.
Answered by Penny Nom. |
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Rational polynomial expressions |
2007-06-09 |
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From a student:
I have a question that continues to lead me to the answer x/(x - 1) but according to my math book, the answer should be 1/(x - 1).
Who is right? Who is wrong?
Here is the question:
(x^2 - 6x - 27)/(x^2 - 11x + 18) DIVIDED by (x^3 + 2x^2 - 3x)/(x^2 - 2x)
Answered by Stephen La Rocque. |
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