Answer:
id say D
Step-by-step explanation:
Lemme know if you need anything !!
Answer: x + y = z
Example:
Lets say if x 5 and y is 10 then z would equal 15.
5 + 10 = 15
Hope this helped! :)
Answer:
Speed of boat in still water is 6km/h
Speed of current is 4km/h
Step-by-step explanation:
We know speed = distance / time
Let the speed of boat in still water be x
Let the speed of current be y
Hence the speed of boat, down stream = 
Distance downstream = 20km
Time taken = 2 hours
We have

......(1)
Speed of boat upstream = 
Distance upstream = 4
Time taken = 2
We have

...(2)
Adding (1) & (2)


Substituting in (1) we get

Answer: C
Step-by-step explanation: all other statements are true because of CPCTC theorem. Therefore, we can conclude that C is the correct answer
Answer: whats your question?
Step-by-step explanation: