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(2b^-1c^3)^3 (b^4c^-2)^0 |
2008-06-05 |
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From ashley:
Simplify this expression
(2b^-1c^3)^3 (b^4c^-2)^0
Please help me. I not sure about the zero on the outside of parentheses.
Answered by Penny Nom. |
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A recursive formula for 9, -18, 36, -27, ... |
2008-06-05 |
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From Rita:
I am having trouble understanding how to write formulas (I should say create formulas) from a given sequence.
It does not matter what sort of sequence it is. The confusion remains.
I have not found a textbook or easy math book that explains this process for the average Joe to grasp.
Here are the two questions:
(1) Write a recursive formula for the sequence
9, -18, 36, -72, ...
(2) Write a recursive formula for the sequence
3, 3(sqrt{3}), 9, 9(sqrt{3})
Answered by Penny Nom. |
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The two acute angles in a right triangle |
2008-06-05 |
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From Crystal:
In the right triangle the ratio of the measure of the two acute angles is 4:1. What is the measure in degrees of the larger acute angle?
Answered by Penny Nom. |
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How do you add decimals? |
2008-06-05 |
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From nyheashiacurry:
how do you add up decimals?
Answered by Janice Cotcher. |
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The path of a baseball |
2008-06-04 |
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From Tom:
How high would a batter have to hit a ball to clear the stadium roof in right field
if the distance to the right field fence is 320 feet from home plate? Is this solvable?
Answered by Janice Cotcher. |
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The interior angles of an 18-sided polygon |
2008-06-04 |
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From Alfred:
How do I find the sum of the interior angles of an 18-sided polygon?
Answered by Janice Cotcher. |
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The volume of a solid |
2008-06-04 |
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From Tom:
The base of a certain solid is a circle of radius 2 while cross sections perpendicular to the
base are isosceles triangles of height 1. What is the volume of the solid?
Answered by Harley Weston. |
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Three mutually tangent circles |
2008-06-04 |
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From Jacob:
If three circles are mutually tangent, does that mean that the two tangent lines are perpendicular?
Answered by Chris Fisher. |
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The area of an octagon |
2008-06-03 |
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From Jeanne:
WHAT IS THE SQUARE FOOTAGE OF A 14 X 14 OCTAGON?
Answered by Penny Nom. |
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Calculating a price based on markup |
2008-06-03 |
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From Sheldon:
I know the most common form for retail businesses of calculating a price based on markup is:
Cost/(1 - Markup), but how is this supposed to work for a business that desires a markup of over 100%.
Answered by Harley Weston. |
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A 4 sided lot |
2008-06-03 |
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From Pat:
If a lot of property is: front 127.87, back 156.17, one side
is
129.73, the other side is 125.00, then how much total acreage is
this.
Answered by Harley Weston. |
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The number of hours of daylight |
2008-06-03 |
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From Marilyn:
Hi, could you please help me with this question?
In a city (in the Northern Hemisphere) the minimum
number of hours of daylight is 9.6 and the maximum
number is 14.4. If the 80th day of the year (March
21) has 12 hours of daylight, determine a sine
function which gives the number of hours of
daylight for any given day of the year. (Jan 1 = 1,
Jan 2 = 2, etc).
Thank you!
Answered by Harley Weston. |
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A quadratic equation |
2008-06-03 |
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From Drew:
A solution of x^2-8x=-17 is
-4 or -4+I or 4 or 4+i
Answered by Janice Cotcher. |
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The x-intercepts of f(x)= 5sin (4x+pi/4) |
2008-06-03 |
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From Tom:
Hi, how would I find where the x intercept in this function f(x)= 5sin (4x+pi/4)?
Answered by Janice Cotcher and Harley Weston. |
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Two consecutive negative even numbers |
2008-06-03 |
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From Chelsea:
The sum of the squares of two consecutive negative even numbers is 100. Find the integers,
Answered by Penny Nom. |
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