Answer:
IJK and KJM
Step-by-step explanation:
Vertical Angles are the angles opposite each other when two lines cross
they are always equal in measure and share a point (in this case J)
hope this helps
Yes. That's exactly right. Good work.
-12
lmk if you want me to explain
Let, the speed of boat = x
Speed of current = y
So, x + y = 280/7
x + y = 40 ---- first equation
x - y = 280/14
x - y = 20
x = 20 + y
Substitute this value of x in first equation,
20 + y + y = 40
2y = 40 - 20
y = 20/2
y = 10
Substitute this in first equation,
x + 10 = 40
x = 30
In short, Speed of Boat = 30 mph, & speed of current = 10 mph
Hope this helps!
