Answer:
8
Step-by-step explanation:
2+2=4
4*2=8
DONE!!!!!!
The picture is omitting the question
Answer:
25
Step-by-step explanation:
You have to do base x height divided by 2
50/2
Answer:
The speed of the boat is 20 km/hr
Step-by-step explanation:
Let s be the speed of boat in still water
Let d be the distance
Upstream speed = s-4
Jane took 30 min to drive her boat upstream to water-ski at her favorite spot.
So, Distance traveled in upstream =
Downstream speed = s+4
So, Distance traveled in downstream = 
So, 
30s-120=20s+80
10s=200
s=20
Hence The speed of the boat is 20 km/hr