Step-by-step explanation:
Let the original speed of the train be x km/h.
Time taken to cover a distance of 360 km = 360/x hours.
New speed of the train = (x+5) km/h.
Time taken to cover a distance of 360 km at new speed = 360/x+5 hours.
Since, the train takes 1 hour less time,
∴360/x - 360/ x+5 = 1
⇒360 (5) = x² + 5x
⇒1800 = x² + 5x
⇒x² + 5x - 1800 = 0
⇒x² + 45x - 40x - 1800 = 0
⇒x (x+45) - 40( x +45) = 0
⇒(x+45) (x-40) = 0
⇒x = (-45), 40
But since speed cannot be in negative.
∴x = 40 km/hr.
Hence, the original speed of the train is 40 km/h.
Answer:
h(-5)=22
Step-by-step explanation:
Replace x with -5.
Simplify.
Simplify.
Hello there!
See the attachment bellow for the answer.
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Answer:
4
Step-by-step explanation:
the average rate of change is 4
Answer:
0.000625 fl oz
Step-by-step explanation:
We assume the dose is supposed to be proportional to weight.
dose/(0.75 lb) = (0.0027 floz)/(9 lb)
Multiply by 0.75 lb:
dose = (0.0027 floz)(0.75/9) = 0.000625 floz
The kittens should get 0.000625 fluid ounces of the medication.
