Algebraic expression means Letter Can stand for numbers. Ex: 2y+5 and Y=10
I. is true.
II. is true.
III. is false.
Answer is choice B.
9x-9>36
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the > has a line beneath it its greater than or equal to
Answer:
This is the transitive property of equality says that if a = b, and b = c, then a = c
Answer:
B
Step-by-step explanation:
Yes, it is. The set of rational numbers is closed for all the four operations, so x+y, x-y, x*y and x/y are rational too. And it is easy to demonstrate. A rational number can be expressed as a fraction of two integers. So, x can be expressed as a/b and y as c/d. Hence x+y = a/b + c/d = (ad+bc)/bd, which, as fraction of two integers, is rational.
