The common difference is 4. If you look at the numbers 1 and 5, there is a difference of 4. If you look at 5 and 9, there is also a difference of 4. If you look at 9 and 13, there is a difference of 4. Therefore, in this arithmetic sequence, the common difference is 4.
<span>12.5% as a fraction in simplest form is 12 1/2
why?
12 is 12 whole so 12
.5 is half of a whole so 1/2 is .5 in simpliest (?how do u spell simpleist?)form
oh yeah in your question:)</span>
Answer:
x = 31
Step-by-step explanation:
The perimeter is the sum of the equal-length sides:
63 = (x -10) +(x -10) +(x -10)
63 = 3x -30 . . . . . . . . collect terms
21 = x -10 . . . . . . . . . . divide by 3
31 = x . . . . . . . . . . . . . add 10
The value of x is usually 1, most of the time x is just used as a place holder