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4.5 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
Signed numbers are "plus" and "minus" numbers.
Minus 10 in Roman numerals is represented as "X" with a line on top, which indicates subtraction. So, minus 10 in Roman numerals is written as "X̄".
No.
Just put a minus sign in front of them. But be careful when subtracting numerals that have a subtractive element in them. For example: C-XL = LX because it is the same as 100 - (- 10 + 50) = 60. In mathematics a minus followed by a minus is equal to a plus - (- 10) = 10 try it out on your calculator.
Anions are atoms that have gained electrons and are therefore negative in charge. They are common among nonmetals. The charges of these ions are written with numbers that followed by a plus or minus sign.
40 would usually be written as XL (fifty minus ten)
4.5 is rational. Rational numbers are numbers that can be written as a fraction. Irrational numbers cannot be expressed as a fraction.
Signed numbers are "plus" and "minus" numbers.
Because both minus signs to be cut therefore minus * minus will be treated as plus numbers
Minus 10 in Roman numerals is represented as "X" with a line on top, which indicates subtraction. So, minus 10 in Roman numerals is written as "X̄".
9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999 is 9.999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999 x 10^99. It is also written as 10^100-1, since it is 9 followed by 99 nines, (A googol is 1 followed by 100 zeroes) it is a googol minus one.
No.
Magnesium cation has a 2+ charge (Mg2+). The meaning is two electrons minus.
Just put a minus sign in front of them. But be careful when subtracting numerals that have a subtractive element in them. For example: C-XL = LX because it is the same as 100 - (- 10 + 50) = 60. In mathematics a minus followed by a minus is equal to a plus - (- 10) = 10 try it out on your calculator.
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It is an axiom necessary for the real numbers to form a field.