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If the sum of two rational numbers is positive, what are the two rational numbers 1 Is both positive 2 At least one is positive 3 At most one is a positive number 4 Is not 0 Say why? It's so weird. It's a. ? If the sum of two rational numbers is positive, what are the two rational numbers 1 Is both positive 2 At least one is positive 3 At most one is a positive number 4 Is not 0 Say why? It's so weird. It's a? ?
The sum of b3 and -1 is a positive number
If the sum of two numbers is negative, then the two numbers () A. Same positive number B. Same as negative C. One positive and one negative D. At least one is negative
If the sum of two numbers is negative, at least one of the two numbers is negative,
Therefore, D.
RELATED INFORMATIONS
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- 6. The following statements are correct:() A. There is no largest negative integer in the rational number B. There is no largest positive integer in the rational number C. The sum of the two numbers of the same sign is certain to be greater than the addend D. The sum of the two numbers of the different sign is certain to be less than the addend The difference must be () A. Positive number B. Negative number C.0 D. Can not determine the positive and negative
- 7. The smallest positive integer in the rational number is _ The largest negative integer is _ The smallest positive integer in the rational number is _ and the largest negative integer is _
- 8. Rational definition operation For rational numbers, define an operation "△" such that a△b=3a+b÷a-3b, and find the value of (-2△[3△(-4)]. Please describe the algorithm or principle! Please state the reason! Rational definition operation For rational numbers, define an operation "△" such that a△b=3a+b÷a-3b, and obtain the value of (-2△[3△(-4)]. Please state the algorithm or reason! Please state the reason!
- 9. For the rational number x, y, a new operation ※: x y = ax+by+c, where a, b, c are constants, and the right side of the equation is the usual addition and multiplication operations. A.1 B.-1 C.11 D.-11
- 10. In the old algorithm of rational number, we define the new operation "(+)" as follows: When a > or =b, a (+) b=b×b; when a
- 11. The quadratic of the nth power of 9 is equal to the 8th power of 3, n, is equal to
- 12. How many?
- 13. The quotient of a nonzero rational number and its inverse? A, sign must be positive b, sign must be negative C, must be not less than zero d, must be greater than zero Why?
- 14. If a, b, c are non-zero rational numbers, and a+b+c=0, ask... a difficult problem, how to do? A, b, c are nonzero rational numbers, and a+b+c=0, find all possible values of a/|a b/|b c/|c abc/|abc| It's so hard, who knows! Teach me,
- 15. If the sum of two nonzero rational numbers is zero, then their quotient is () A.0 B.-1 C.1 D. Not sure
- 16. If the sum of two rational numbers is -1 and the quotient is 1, then their difference is () and the product is ()
- 17. 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
- 18. If a > b, ab <0, and |a|<|b|, can you compare the four numbers a, b,-a,-b?
- 19. The product of a nonzero rational number and the inverse of its reciprocal number is ______.
- 20. 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?