Suppose the length of each side of a square is decreased by 4 feet. If the perimeter of the square is now 32 feet, what was the
2 answers:
Answer:
Option D.
Step-by-step explanation:
Let x be the original length of each side in feet.
Length of each side of a square is decreased by 4 feet.
New length = (x-4) feet.
Perimeter of a square is
Perimeter of new square is
It is given that the perimeter of the square is now 32 feet.
Divide both sides by 4.
The original length of each side is 12 feet.
Therefore, the correct option is D.
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Answer:
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The <em>correct answers</em> are:
C) a(n) = 0.3+(n-1)0.6 ; and
C) a(n) = 47+ (n-1)(-15)
Explanation:
#1) This is an arithmetic sequence, since we are adding the same value to each term to find the next term. We add 0.6 each time, so this is the common difference. The first term is 0.3. This goes in the formula
#2) This is also an arithmetic sequence. This time, we add -15. The first term of this one is 47. This gives us:
The work is equivalent to the dot product of the two vectors.
