No.
Any number you can write completely is a rational number.
Any number with a repeating decimal fraction is also a rational number.
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Any number that goes on forever without repeating is an irrational number. These are usually represented symbolically (because they cannot be written "exactly" any other way). These include such numbers as √2, π, e, ∛(-4), and an infinite number of others.
Only the third one makes x=-1 true
Area is equals length times (*) breath
L*b
10.3*9.3
=95.79l
X + x+1 + x + 2 = 20
3x + 3 = 20
3x = 17 but can't start with x = 6 because 6+7+8 > 20,
so have start with 5 + 6 + 7 = 18 are the 3 sides.
Answer:
Yes, Sierra is correct
Step-by-step explanation:
Given
Required
Is she correct
The right parenthesis has 4 + 5.
This can be simplified as: 
So, we have:
The left parenthesis has y + 7.
This cannot be simplified because y is a variable and 7 is a number.
<em>Hence, Sierra is correct.</em>
