Answer: After 2:29 hours both Aldrin and Jan will be 13 km apart from each other.
Time at that instant will be : 4:00 pm + 2.29 hours= 6:29 pm
Step-by-step explanation:
According to the figure:
Ab= c = 13 Km
AC = b = =5t Km
After two hours the distance covered by the Aldrin say till point D :
Since, we are interested in determining the time at which Aldrin and Jan both 13 Km apart. For that Aldrin Additional distance covered by the Aldrin from point D to B is :
CB= a = CD+DB= 6+3t
We will apply Laws of cosines:
On solving the the above equation by quadratic formula we get two values of 't'
1) t = 2.49 hours , 2) t = -2.80 hours
Since,time cannot be in negative so we will ignore the negative value of t
t = 2.49 = 2:29 hours ,(0.49 hour=0.49 × 60 min=29.4 min)
After 2.49 hours after the walking of Jan. Both Aldrin and Jan will be 13 km apart from each other.
Time at that instant will be : 4:00 pm + 2:29 hours= 6:29 hour
WILL AWARD BRAINLIEST !!!!!!!!
Answer:
c
Step-by-step explanation:
The ratio in simplest form is 4:5.
The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.
here, we have,
There are 16 girls and 20 boys in the school band
so, the ratio is,
16/20,
divide both by 4
and you get 4/5
Hence, the ratio in simplest form is 4:5.
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the answer is 30 to 18 is 60%