Carla use two and three cups and one and three eight how much does she use in all
1 answer:
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Answer:
Step-by-step explanation:
We have the function:
And we want to find:
So, we will differentiate function <em>h</em>. By the chain rule, this yields:
Then it follows that:
Using the table, we acquire:
And using the table again, we acquire:
Evaluate. Hence:
Given:
A train travels 288 km at a uniform speed.
If the speed has been 4 km per hour more it would have taken one hour less for the same journey.
To find:
The initial speed of the train.
Solution:
Let x km/h be the initial speed on the train.
New speed of train = (x+4) km/h
We know that,
Time taken by the train initially to cover 288 km is hours.
New time taken by the train to cover 288 km is hours.
It is given that If the speed has been 4 km per hour more it would have taken one hour less for the same journey.
Splitting the middle term, we get
We know that the speed cannot be negative. So, the only possible value of x is 32.
Therefore, the speed of the train is 32 km/h.