Answer:
n
Step-by-step explanation:
0.3 times 100 = 30
300 thousands = 0.300.
No it does not
X - speed of the current
40+x - speed with current
40-x - speed against current
t-time
(40+x)*t=100
(40-x)*t=60
40t+xt=100
<span> + 40t-xt = 60
</span> 80t =160
t = 2
40t+xt=100,
40*2+2x=100
80+2x=100
2x=100-80
2x=20
x=10 mi/h
10 mi/h speed of the current.
Move the negative sign to the left
-4 = s - (-6/4)
Simplify 6/4 to 3/2
-4 = s - (-3/2)
Simplify brackets
-4 = s + 3/2
Subtract 3/2 from both sides
-4 - 3/2 = s
Simplify -4 - 3/2 to -11/2
-11/2 = s
Switch sides
<u>s = -11/2</u>