11/7
..................................
Answer:
2000 meters
Step-by-step explanation:
When the motorboat is moving downstream, its speed relative to the ground is 18 km/h, so its speed relative to the raft is 15 km/h.
When the motorboat is moving upstream, its speed relative to the ground is 12 km/h, so its speed relative to the raft is again 15 km/h.
Converted to m/min, the relative speed is:
15 km/h × (1000 m/km) × (1 h / 60 min) = 250 m/min
It takes the motorboat 16 minutes to travel to the front of the raft and back. Since the speed is the same in both directions, the motorboat takes 8 minutes to travel the length of the raft.
So the length of the raft is 250×8 = 2000 meters.
Answer:
1. 75%
2. 20%
3. 20%
4. decrease 5.4%
Step-by-step explanation:
1. 119-68=51, 51/68=0.75
2. 30-24=6, 6/30=0.20
3. 18-15=3, 3/15=0.20
4. 762-721=41, 41/762=0.0538
Answer:
yeah im pretty sure that out of everyone on here you are the only one that's not from the united states.
Step-by-step explanation:
≥≧≦≤
.^◡^.
<em>aM gObLiN gImMiE yE pOiNtS! </em> ( thanks )
Using an exponential function, it is found that the total amount of waste these households are expected to produce in 2020 is of 117,649 tones.
<h3>What is an exponential function?</h3>
A decaying exponential function is modeled by:
In which:
- A(0) is the initial value.
- r is the decay rate, as a decimal.
In this problem, we have that:
- The households produced a total of 125 000 tonnes of waste in 2017, hence A(0) = 125000.
- The total amount of waste is expected to fall by 2% each year, hence r = 0.02.
Thus, the equation is:
2020 is 3 years after 2017, hence the amount is:
The total amount of waste these households are expected to produce in 2020 is of 117,649 tones.
You can learn more about exponential functions at brainly.com/question/25537936
