Question

3.

The diagram shows a square.
(7x + 3) cm
Find the length of the side of the square.
3cm
(5x + 8) cm

Answer 1

Explanation:

The four sides of a square are equal.

7x + 3 = 5x + 8 Subtract 5x from both sides

7x - 5x + 3 = 8 Combine the left

2x + 3 = 8 Subtract 3 from both sides

2x = 8-3 Combine the right

2x = 5 Divide by 2

x = 5/2

x = 2.5

That is not quite the answer

Side = 7x + 3

Side = 7*2.5 + 3

Side = 17.5 + 3

Side = 20.5