0
Still curious? Ask our experts.
Chat with our AI personalities
Coach
Devin
RafaAdd your answer:
Earn +20 pts
How do you use reciprocals to solve a division problem with rational numbers?
Division by any non-zero number is the same as multiplication by its reciprocal.
What is closing a rational number under addition And can you close them under subtraction multiplication and division?
Rational numbers are numbers that can be expressed as a fraction a/b where a and b are both integers and b is not equal to zero. All integers n are rational numbers because they can be expressed as the fraction n/1. Rational numbers are closed under addition, subtraction, multiplication and division by a non-zero rational. To be closed under addition, subtraction, multiplication and division by a non-zero rational means that if you have two rational numbers, when you add, subtract, multiple or divide them, you will get another rational number. For example, take the rationals 1/3 and 4/3. When you add them together, you get another rational number, 5/3. Same with the other operations. 1/3 - 4/3 = -1 (remember integers are rational, too) (1/3) * (4/3) = 4/9 (1/3) / (4/3) = 1/4
Why is division not closed for rational numbers give an example?
If a set is closed under an operation. then the answer will be a part of that set. If you add, subtract or multiply any two rational numbers you get another national number. But when it comes to division, it is closed except for one number and that is ZERO. eg 3.56 (rational number) ÷ 0 = no answer. Since no answer is not a rational number, that rational numbers are not closed under the operation of division.
Is quotient a division word or a multiplication word?
It is a division word. The quotient is the result you get when you divide a number (dividend) by another number (divisor).
Why is multipication and division related?
Division is the inverse operation of multiplication. If a x b = c, then c / b = a. Also, division by a number can be defined as the multiplication by the number's reciprocal. Thus, a / b is the same as a x (1/b).
