Explanation:
First, we need to determine the distance traveled by the car in the first 30 minutes, .
Notice that the unit measurement for speed, in this case, is km/hr. Thus, a unit conversion of from minutes into hours is required before proceeding with the calculation, as shown below
Now, it is known that the car traveled 40 km for the first 30 minutes. Hence, the remaining distance, , in which the driver reduces the speed to 40km/hr is
.
Subsequently, we would also like to know the time taken for the car to reach its destination, denoted by .
.
Finally, with all the required values at hand, the average speed of the car for the entire trip is calculated as the ratio of the change in distance over the change in time.
Therefore, the average speed of the car is 50 km/hr.
Well, it would mean that you would research the topic and look at its background info to see if it has reliable sources to prove your hypothesis. I hope this helped!
Hello!
I'm just going to ignore the name of the building and just do the math
1 foot is equivalent to 0.3048 meters
if the building is 1368 feet tall, multiply it by 0.3048 to get 416.9664 meters
I hope this helps, and have a nice day!
A: Renewable resources make cleaner energy.
D: It often costs more to produce energy from renewable resources.
E: More local suppliers can provide energy from renewable resources to customers
Explanation:
Renewable sources of energy are cleaner and more accessible source of energy. They are easily replenished.
With current usage metrics, they can satisfactorily meet the energy demand of the world without affecting their supply.
- Renewable energy include biomass, wind energy, wave energy, solar energy e.t.c
- These energy sources are easily replenished.
- To produce energy from renewable sources, it usually costs more.
- Most equipment and devices that produces energy from renewable sources are highly pricey.
- Renewable energy is the future of energy production.
- Most smart cities around the world have solely relied on harnessing this source of energy.
- They no carbon emission to the environment and would not lead to climate change.
learn more:
Non - renewable source of energy brainly.com/question/3386515
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