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Is a rational number always a positive?
No.
If x is rational and y is rational then xy is rational?
Yes, the product of two rational numbers is always a rational number.
Why are terminating decimals rational numbers?
they always are.
When is the sum of two rational numbers with different signs positive?
The sign of the sum is positive when the absolute value of the positive addend is greater than that of the negative addend.
Does there exist an irrational number such that its square root is rational?
No, and I can prove it: -- The product of two rational numbers is always a rational number. -- If the two numbers happen to be the same number, then it's the square root of their product. -- Remember ... the product of two rational numbers is always a rational number. -- So the square of a rational number is always a rational number. -- So the square root of an irrational number can't be a rational number (because its square would be rational etc.).
Is the ratio of two rational numbers always positive?
No; depends on the signs of the rational numbers.
Are rational numbers always integers?
Most of the time yes, positive or negative whole numbers count as rational numbers. So do positive or negative fractions.
When adding two negative rational numbers the sum will be negative sometimes never always?
Never.
Why is the sum and product of two rational numbers is rational?
A rational number can be stated in the form a/b where and b are integers. Adding or multiplying such numbers always gives another number that can be expressed in this form also. So it is also rational.
Will repeating decimals always or never be rational numbers?
They will always be rational numbers.
Is it always true that two negatives make a positive?
Adding two negative numbers will always be negative. Subtracting two negative numbers may be positive or negative. Dividing or multiplying two negative numbers will always be positive.No
Are terminating decimals always nether or sometimes a rational numbers?
They are always rational numbers.
Is the sum of two rational numbers is it rational or irrational?
Such a sum is always rational.
Are terminating decimals always rational numbers?
Yes, terminating decimals are always rational numbers.
Is the difference between two rational numbers always a rational numbers?
no
Are whole numbers rational or irrational?
Whole numbers are always rational
Is the product of two rational numbers irrational?
The product of two rational numbers is always a rational number.
