The notation of a bar (vinculum, or overbar) over a whole number
doesn't seem to be very common. Here are some possibilities as to
what it could mean:
It is sometimes used as a grouping symbol, as in a fraction:
_____ __
3 + 1 x 5 = 20 so 67 = 67
I have also seen it used to refer to the average:
_ __
x = {1,2,6}, x = 3 so 67 = 67
(the average of one number is itself, of course).
I have also heard that it can be used to mean "1000 times whatever is
underneath", especially with Roman numerals - see the following Web
page, Final Answers by Gerard P. Michon:
Answer:
In order to calculate perimeter, you need to add together the lengths of all four sides of the square. You are given the length of one side. Remember, all sides of a square are equal, so really you already have the measures of each side. Then, you add them together, so 6 + 6 + 6 + 6 = 24 inches.
Step-by-step explanation:
Slope is 2/-1 or -2. Because you go up twice and then you go left once.
Answer:
Second one and the fourth one.
Step-by-step explanation:
Let’s look at this. When we are finding the area of the rectangle, we multiply the length times the width. Let’s look at the first option.
2 times (x + 7)
2x + 14
this one won’t work.
second one:
14(x + 3)
14x + 42
this works.
thrid one.
14(x+5)
14x + 70
nope.
fourth one.
7(2x+6)
14x + 42
works.
fifth one,
2(7x +20)
14x + 40
Does not work.
