Answer:
Step-by-step explanation:
ABCD is a square.
BD and AC are diagonals and they have equal length.
We have AC = 7x + 18 and BD = 10x - 3
<u>Since AC = BD, we substitute their values and solve for x:</u>
- 7x + 18 = 10x - 3
- 10x - 7x = 18 + 3
- 3x = 21
- x = 21/3
- x = 7
<u>Then find the length of BD:</u>
- BD = 7x + 18 = 7*7 + 18 = 49 + 18 = 67
Correct option is B. BD = 67