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A standard normal probability |
2005-11-19 |
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From Pat:
Find the probability of Z when it lies between -1.10 and -0.36
Answered by Penny Nom. |
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Gallons and cubic feet |
2005-11-19 |
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From Just interested:
I have found that 1 cubic foot will hold 7.48 gallons of gasoline, but I would like to know how to come by this answer.
Answered by Penny Nom. |
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I = PRT |
2005-11-16 |
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From Ryan:
Use the formula to find the value of the variable that is not given:
I=PRT;I=$2880, R=0.08, P=$12,000
Answered by Penny Nom. |
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Rational expressions |
2005-11-15 |
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From Zach:
I can solve easy problems such as (x/2)+3=2+(3x/4). That is easy because the Lowest Common Denominator is 4. But what really gets me stuck is a problem like this one.
(6/x-2) = ( 21/(x-2)(x+2) )+ 1.
Answered by Penny Nom. |
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What shape do I say a football is? |
2005-11-14 |
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From Peter:
I am a 43 year old man. I am no longer in school, I have a bachelors degree. I like to tell stories about sports in ways to make people think about the amount of time they devote to the sports. For example, while attending a church in Chicago on the north side, I would pass by Wrigley field.
I began to call it the church of the flying orb or sphere. Now if I want to tell a similar story about football (not soccer), what shape do I say a football is?
Answered by Chris Fisher. |
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111111...111 divided by 3 |
2005-11-14 |
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From Jesus:
If we divide the number 1111...........1( it has got 2004 digits) by 3. How many zeros will we get?. The answer that I have found in the book is 667 but I do not know how to reached it.
Answered by Penny Nom. |
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Two word problems |
2005-11-14 |
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From Jennifer:
1. Every other person on a school's parent advisory committee is surveyed to determine how many people support passage of a school bond to build a new elementary school. Is this a good sample? Why or why not?
2.What is the difference in elevation between the highest point in California,Mount Whitney,which towers 4421 meters above sea level, the lowest point in California,Death Valley, which lies 86 meters below sea level?
Answered by Harley Weston. |
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A picture window |
2005-11-14 |
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From Marcos:
The length of a picture window is 2 feet longer than twice its width. If the diagonal of the window is 13 feet, find the dimensions of the window.
Answered by Penny Nom. |
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An isosceles triangle |
2005-11-14 |
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From Chris:
PX and QY are attitudes of acute triangle PQR, and Z is the midpoint of PQ. Can you write a proof that triangle XYZ is isosceles?
Answered by Chri Fisher. |
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Add one 1 at the beginning and at the end of a number |
2005-11-13 |
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From Samuel:
If we add one 1 at the beginning and at the end of a number, this number is increased by 14789.
What is the sum of the digits of the number?
Answered by Penny Nom. |
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The elevation of the top of the house |
2005-11-13 |
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From Chloe:
Karen is standing 23 metres away from the base of a 23 metre high house. Assume that Karen's eyes are 1.5 metres above ground. Find the elevation of the top of the house from Karen's eye line.
Answered by Penny Nom. |
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Factoring quartics |
2005-11-13 |
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From Kyle:
How do I factor y4 + y2 +1?? I think the answer is (y2 + y + 1)(y2 - y + 1), but I'm not sure how to get that...
Answered by Chris Fisher. |
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fog |
2005-11-12 |
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From Janice:
I am having problem with the (fog) function
(fog) (x). Given f(x)= 2x2 ; g(x)= 3-4x
Answered by Penny Nom. |
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The distributive property |
2005-11-12 |
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From Jennifer:
I am trying to help my daughter . How do you name the property for 6(4w - 3z)=(6 x 4w)-(6 x 3z)
Answered by Penny Nom. |
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Cubic feet and cubic yards |
2005-11-12 |
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From Mike:
I need to know how to calculate square feet into yards of material. Example: 1320 sq. ft. surface area by 1 in. depth. What does this equal in cubic feet and yards. Thanks for any help you can give me.
Answered by Penny Nom. |
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