C by counter example
1/3 doesn't terminate
To answer this, first you must know the properties of a square.
With a square, each side is equal in length, which means:
4x- 50 = 60 cm
So now just solve it like a basic equation
Add 50 on both sides
4x - 50 = 60
+50 +50
4x= 110
Now divide both sides by 4
Answer is B. 27.5
9514 1404 393
Answer:
C. 6x² +20x +30
Step-by-step explanation:
The perimeter of a rectangle is given by the formula ...
P = 2(L +W)
Substituting the given length and width, you have ...
P = 2((3x² +7x +9) +(3x +6))
Simplifying gives ...
P = 2(3x² +10x +15)
P = 6x² +20x +30
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<em>Additional comment</em>
"Standard form" has the terms in order of decreasing exponents. The expression of choice D is equivalent, but is not in standard form.
What do you mean by opposite? If you mean reciprocal, then the negative numbers will always be bigger (-2 : -1/2) and the positive numbers will get smaller (2 : 1/2). One will not be affected and will always be one, because the reciprocal of 1/1 is 1/1. If you are talking about opposites as in positive and negative opposites, then the opposite of a positive number is smaller than the original number (2 : -2) and the opposite of a negative number is larger than the original (-2 : 2). Zero is unaffected here because zero cannot be positive nor negative. Hope this helps, and sorry if this is confusing.
