Given:
The perimeter of a rhombus of side d cm is

To find:
The perimeter of a rhombus of side 3.2 cm.
Find the length of a side of a rhombus of perimeter 14 cm.
Solution:
Side of a rhombus is 3.2 cm. So, its perimeter is


Therefore, the perimeter of a rhombus of side 3.2 cm is 12.8 cm.
The perimeter of another rhombus is 14 cm, and we need find its side.


Divide both sides by 4.


Therefore, the length of a side of a rhombus of perimeter 14 cm is 3.5 cm.
B.................................................
Answer:

Step-by-step explanation:

Subtract 2 from both sides

mutliply both sides by -4, flip the inequality

Add 2x on both sideds

Subtract 8 from both sides

Divide both sides by 6

Answer:
-1
Step-by-step explanation:
X+2 < 7
Subtract both sides by 2
x < 5
Any value where x was less than 5 would be correct.