Answer:
25 inches
Step-by-step explanation:
If square has a perimeter of 20 inches, the length of each side is:

After cutting the square in half, we are left with two rectangles of 5 in x 2.5 in
Attaching those two smaller rectangles by their short end (2.5 in side), gives us a new rectangle with a height of 2.5 in and a length of 10 in (sum of the 5 in sides in each rectangle). The perimeter of this new rectangle is:

The perimeter is 25 inches.
The rhombus has equal side lengths while the parallelogram doesn't have equal side lengths.
Answer: D
Step-by-step explanation:
−1/3⋅(8 1/7)
change 8 1/7 to an improper fraction
8 1/7 = (7*8 +1)/7 = 57/7
-1/3 * 57/7
-57/21
21 goes into 57 2 times with 15 left over
-2 15/21
divide top and bottom of the fraction by 3
-2 5/7
Choice B
Well just plug those two numbers into the equation: 7(3) - 3(2) Which equals 15 so B) 15