no x² is the product of 2 rational numbers in this case the same 2 numbers x and x The product of two rational numbers is always rational.
The sum of 45 and 15 equals 60. 15 x 3 equals 45.
The additive identity for rational numbers is 0. It is the only rational number such that, for any rational number x, x + 0 = 0 + x = x
x = 45
X-45=12 ________ +45 +45 ________ x= 57
no x² is the product of 2 rational numbers in this case the same 2 numbers x and x The product of two rational numbers is always rational.
The sum of two numbers is 45 and their difference is 5. What are the two numbers? Let's start by calling the two numbers we are looking for x and y. The sum of x and y is 45. In other words, x plus y equals 45 and can be written as equation A: x + y = 45 The difference between x and y is 5. In other words, x minus y equals 5 and can be written as equation B: x - y = 5
The sum of 45 and 15 equals 60. 15 x 3 equals 45.
The additive identity for rational numbers is 0. It is the only rational number such that, for any rational number x, x + 0 = 0 + x = x
x = 45
Well, honey, the two numbers that multiply to make 45 are 9 and 5. It's basic math, darling. So, there you have it - 9 times 5 equals 45. Now go forth and conquer those multiplication tables!
X-45=12 ________ +45 +45 ________ x= 57
Well, isn't that a happy little question! To find two numbers that multiply to 2025, we can think of it as looking for a pair of numbers that, when multiplied together, equal 2025. One pair of numbers that fits the bill is 45 and 45, because 45 multiplied by 45 equals 2025. Just like painting a beautiful landscape, sometimes the answer is right in front of us when we take a closer look.
That is the property of infinite density of rational numbers. If x and y are any two rational numbers then w = (x + y)/2 is a rational number between them. And then there is a rational number between x and w. This process can be continued without end.
If both numbers are rational then x plus y is a rational number
If you have a set of 45 numbers, then there is one combination that includes all 45 numbers and 45! = 45 x 44 x 43 x ... x 2 x 1 ≈ 1.19622 x 1056 permutations (ways of ordering) all 45 numbers.
I t is the number 0, which has the property that x + 0 = 0 + x = x for all rational numbers x.