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Four and five digit numbers |
2004-09-21 |
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From Josy:
The question I have now in front of me is....Is a 4-digit number always less than a 5-digit number?
Hi Josy,
The digits in order are 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9. Thus the largest four digit number is 9999. The smallet 5 digit number is 10000.
Penny
Go to Math Central
Answered by Penny Nom. |
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1,3,6,11,18,29,__ |
2004-09-21 |
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From Guillermo:
How do you get to the answer of this sequence
1,3,6,11,18,29,__
Answered by Claude Tardif. |
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f(x) = x-4 if x<2 |
2004-09-21 |
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From Dani:
Hi, my name is Dani. I'm in tenth grade Algebra 2, and I'm learning about a lot of different kinds of functions, and I can't quite seem to understand how every part of the piecewise function works. I understand most of it, I think, but I've been looking at an example in my math book, and I'm not sure how they got the answer they did. The part I don't understand reads: "Graph f(x) = x-4 if x<2" and "Identify the domain and range." The picture in the book shows an open circle at (2,-2), with an arrow going down and to the left with the slope being one. How did they get the open circle to be at (2,-2), and why does the arrow point where it does?
Answered by Penny Nom. |
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The method of substitution |
2004-09-20 |
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From Kayla:
y=x-1
y=2x-3
Answered by Harley Weston. |
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Wages for one month |
2004-09-20 |
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From Janet:
if offered $10,000 or 1 cent on the first day and then doubled daily for one month which would you take ?
Answered by Harley Weston. |
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B={A,{A}} |
2004-09-20 |
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From Muhammad:
Let A be a set and let B = {A,{A}}.
(a) Explain the elements of set B (with some example)
(b) Prove that A is not a subset of B.
Answered by Penny. |
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The hypotenuse of a right triangle |
2004-09-20 |
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From Shannon:
I am trying to find the hypotenuse of a right triangle with only the length of the opposite side. What is the formula as I don't have the length of the adjacent side? Can I compute it without knowing what the other two angles are?
Answered by Penny Nom. |
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Fabricating with pipe |
2004-09-19 |
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From Gil:
I need to fabricate a 10 section, 4" pipe circle with an inside diameter of 40". I would like to know what angles would apply and how to find them,
Answered by Penny Nom. |
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A binomial squared |
2004-09-19 |
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From John:
Can you explain the steps
for me, that get you from (a - b)2 to a2 -
2ab + b2
Answered by Penny Nom. |
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Perimeter and area of a semi_circle |
2004-09-18 |
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From A student:
I want to know how to find the perimeter and area of a semi-circle and a quarter-circle.
Answered by Penny Nom. |
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Zero to the zero |
2004-09-18 |
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From Greta:
My name is Greta, and I am a 7th grader and my test is coming up. The question I would like to ask you is why 0 elevated to 0 is unidentified.
Answered by Penny. |
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Driving me crazy |
2004-09-18 |
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From Jerry:
This is driving me crazy!!! Someone told me of a number that can be divided EQUALLY by each of the following individual numbers: 1,2,3,4,5,6,7,8,9. what is that number?
Answered by Penny. |
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The price of a book |
2004-09-18 |
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From Dorly:
If the number of toonies required to buy a book is nine more than the number of
five-dollar bills required to buy the same book, determine the cost of the book.
Answered by Penny. |
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A challenge |
2004-09-17 |
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From Lasse:
xy
xx
xyx
xxx
xyxx
"x" and "y" each represents a number.
Find out the system to make the next line
Answered by Penny Nom. |
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Some numbers less than 100 |
2004-09-17 |
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From Paul:
for how many numbers less than 100 is the digit in the ones place half the digit in the tens place?
Answered by Penny Nom. |
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