Answer:
total distance travel by them to cross river is 17.3 m
Step-by-step explanation:
Assume A be the initial position of both person and B as apposite point to A
u component of velocity along SOUTH DIRECTION is 4 cos30 = 0.4330 m/s
v component of velocity along SOUTH DIRECTION is 4 cos90 = 0 m/s
total speed will be = 0.4330 + 0 = 0.4330 m/s
time taken
time taken 
component of u in downstream direction = 4 cos120 = -0.25 m/s
component of v in downstream direction = 4 cos 0 = 0.5 m/s
total component in downstream will be -0.25 + 0.5 = 0.25
total distance travel by them to cross river is 
downstream.
Answer:
Slope: 4
Y-intercept: -5
Equation: y=4x-5
Step-by-step explanation:
Slope formula:
So let's use the ordered pairs (1, -1) and (2,3) from the table (it doesnt matter which ones you choose) and plug the numbers in to the formula:
Which is equal to:
Which is equal to 4. So the slope is 4.
To find the y-intercept, substitute the slope and an ordered pair into the slope-intercept equation, y=mx+b. So let's use (1,-1).
-1=4(1)+b
= -1=4+b
= -1-4=4-4+b
= -5=b
So the y-intercept is -5.
Then for the equation, you just plug in the slope and the y-intercept into y=mx+b, which would be:
y=4x-5
Its D. because 6 = 600 so 2 tens + 600 = 620 so 15 plus all of the above is 645 :D hope this helped
