Answer:
64x²+128x+39
Step-by-step explanation:
(8
The answer will be 5.
|5-4|=1
Answer:
3x - 5
Step-by-step explanation:
im assuming it would be the same as MP but im not sure
Answer:
1.54
Step-by-step explanation:
a calculator provides the precise answer efforessly
Answer:
Time = 25/9 hr
Step-by-step explanation:
Let speed of boat in still water is x km/hr
then, speed in downstream equals to "x + 3"km/hr
and speed in upstream equals to "x - 3" km/hr
We also know that time taken to travel 3km in upstream is twice as time taken to travel 4km in downstream.
so, using time = distance/speed
3/x- 3 = 2 × (4/x + 3)
3x + 9 = 8x -24
5x = 33
x = 33/5 km/hr
Net speed in upstream = 33/5 - 3 = 18/5 km/hr
So, Time taken to travel 10km upstream = distance /speed
= (10 × 5) / 18 = 25/9 hr
Time = 25/9 hr