Answer:
21
Step-by-step explanation:
Put them equal to eachother
(10x-29)=(8x+3)
2x=42
x=21
Answer: part a.) c =2A/d
Part b.) d = 7
Part C The diagonals are each 8
Step-by-step explanation: part b:
35= 10d/2 70= 10d. 7 =d
Part c 32= 2c²
64 = c²
√64 = √c²
c = 8