In the fraction 3/© , © may not be substituted by which of the following sets?
a) {1, 2, 4}
b) {-2,-3,-4}
c) {1, 3, 7}
d) {0, 10, 20}
e) {1.8, 4.3}
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I have NO IDEA what this is talking about....
I am studying for a GED and Need to know this I guess.
What is this? I don't want "the answer" I want to know what this is and how to find the answer... Thank you for you help.
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Also If anyone knows of a website that gives a GOOD explaination of these types of things, I would like a link.
2007-01-23 21:05:22 · 8 answers · asked by bubbie_king 2 in Science & Mathematics ➔ Mathematics
3 / 0 Is undefines
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2007-01-24 01:41:52 · answer #1 · answered by SAMUEL D 7 · 0⤊ 0⤋
In the fraction 3/x, x may be substituted by the set {1, 2, 4}.
This means that x can be replaced by any of the numbers 1, 2 or 4 and you will still get a valid fraction.
The same applies to (c) and (e). You can use any number in the set and still get a valid fraction.
The two odd sets are (b) and (d) which have negative numbers and a zero.
First the negative numbers: can you write 3/-2 ? Is it a valid fraction? It's certainly not the normal way of looking at fractions, but there's nothing wrong with it.
Now the zero: can you write 3/0 ? No, because it doesn't mean anything. You can't divide by zero so 3/0 is not a fraction.
So in the fraction 3/x, x may not be substituted by the set {0,10,20}.
I must admit that the question is very badly phrased. It should be "may not be substituted by each of the numbers from which of the following sets?"
2007-01-24 06:59:31 · answer #2 · answered by Gnomon 6 · 0⤊ 0⤋
The first thing I looked for in your choice of answers was "0". Any number over zero is meaningless. (basically infinity). Since "d" set contains a zero, I would say the answer is "d".
2007-01-24 05:14:12 · answer #3 · answered by nightracker303 2 · 0⤊ 0⤋
d. No zeroes in the denominator (the bottom of a fraction).
2007-01-24 06:14:53 · answer #4 · answered by bigcha 2 · 0⤊ 0⤋
I would say the answer is b, because you can not divide by a negative number.
2007-01-24 05:09:06 · answer #5 · answered by merlebh 2 · 0⤊ 1⤋
d.
If you don't believe use windows calculator and take 3 divided by 0.
For me ,its say "Cannot divide by zero."
Hence d is out.
2007-01-24 05:09:45 · answer #6 · answered by A 150 Days Of Flood 4 · 0⤊ 0⤋
you cannot have a zero in the denominator. you cannot divide a number by zero.
2007-01-24 05:10:09 · answer #7 · answered by Aaron 3 · 0⤊ 0⤋
B is the answer
2007-01-24 05:14:38 · answer #8 · answered by Anonymous · 0⤊ 1⤋