Answer:
Step-by-step explanation:
a) The perimeter of a square is given by the formula P = 4s, where s is the length of one side of the square (since a square has all sides equal). Given that the length of the square photo frame is (2x + 5) cm, we can write the equation for the perimeter as:
P = 4(2x + 5) = 60
b) Now, we solve for x:
4(2x + 5) = 60
8x + 20 = 60
8x = 60 - 20
8x = 40
x = 40/8
x = 5
Therefore, the value of x is 5.
