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If the product of two rational numbers is positive and the sum of two rational numbers is negative, then both numbers A are positive and B are negative. If the product of two rational numbers is positive and the sum of two rational numbers is negative, then two rational numbers are A is a positive number, B is a negative number, C is a positive number, D has one zero If the product of two rational numbers is positive and the sum of two rational numbers is negative, then both numbers A are positive and B are negative. If the product of two rational numbers is positive and the sum of two rational numbers is negative, then two rational numbers are A is a positive number and B is a negative number. D has one zero
Option B
If an even power of a rational number is not a negative number, then the number is () A. Positive number B. Negative numbers C. Non-negative number D. Any rational number
Let this number be a.
I.e. a2n≥0(n is a positive integer, a is a rational number)
Therefore, D.
RELATED INFORMATIONS
- 1. If the quotient of two rational numbers is positive, then the two numbers must be () A. All negative B. Both are positive C. At least one is positive D. Same number
- 2. If the quotient of two rational numbers is negative, then the two numbers are both positive A or negative B has at least one negative C and one positive D a negative If the quotient of two rational numbers is negative, then the two numbers are both positive A or negative B at least one of which is negative C and is positive D a positive number a negative number
- 3. For a rational number represented by the letter a, is it positive or negative
- 4. If a rational number is represented by the letter a, is the number a a positive or negative? And give examples.
- 5. The rational set is () A the set of positive and negative numbers B the set of positive integers, negative integers and fractions C the set of integers and fractions D the set of integers and D Set of integers and negative numbers The rational set is () A the set of positive and negative numbers B the set of positive integers, negative integers and fractions C the set of integers and fractions D the set of integers and D A collection of integers and negative numbers
- 6. There are ten rational numbers, one of which is a square number, two opposite numbers, and two reciprocal numbers. If the product of these ten numbers is less than zero, then The number of positive numbers is at least () A.2, B.3, C.4, D.4 and above
- 7. Write randomly two rational numbers with the same sign and compare their reciprocal sizes. Can you see how their reciprocal sizes relate to the original two numbers? Write randomly two rational numbers with the same symbol and compare their reciprocal sizes. Can you see how their reciprocal sizes relate to the original two numbers?
- 8. The product of a nonzero rational number and the inverse of its reciprocal number is ______.
- 9. If a > b, ab <0, and |a|<|b|, can you compare the four numbers a, b,-a,-b?
- 10. If the sum of two rational numbers is divided by the product of these two rational numbers, the quotient is equal to 0, then these two rational numbers () A. reciprocal B. opposite numbers C. There is a number 0 D. opposite to each other and not zero If the sum of two rational numbers is divided by the product of these two rational numbers, the quotient is equal to 0, then these two rational numbers () A. reciprocal B. opposite numbers C. There is a number 0 D. Opposite to each other and not zero
- 11. Given that the quotient of two rational numbers is negative, then,
- 12. The absolute value of a rational number is equal to the opposite number of the number,
- 13. If the correct sum of two numbers is negative, then at least one of the two numbers is negative and the absolute value of the sum of two rational numbers is equal to the absolute value of the two numbers
- 14. The absolute value of a rational number is non-negative, i.e.|a| equals what?
- 15. Is the seventh of the negative rational number, irrational number is the fraction of rational number.
- 16. Is infinite cyclic decimal a rational number? What about infinite non-recurring decimals? Why?
- 17. It is proved that the sum of a rational number and an irrational number must be an irrational number
- 18. On Rational and Irrational Numbers Irrational number multiply irrational number; irrational number divide irrational number; irrational number add irrational number; irrational number subtract irrational number; rational number multiply irrational number; rational number divide irrational number; rational number add irrational number; rational number subtract irrational number
- 19. In the following numbers, the irrational number is () (A) Root 36(B) Root (-4)2(C)0.2020020002(D)8/3
- 20. Which two irrational numbers add up to five?