Multiply the √49 by √4 - this will give you √196 over 4
√196 = 14
therefore you have 14/4
divide each by 2 to simplify
this gives you 7/2 <-- your final answer
Answer:
15%
Step-by-step explanation: maybe
Answer:
Step-by-step explanation:
1 1/8 = 9/8
9 - 7 = 2
9/8 - 7/8 = 2/8
2/8 = 1/4
Answer:
<em>The train must travel at 50 km/hr to make it on time.</em>
<em></em>
Step-by-step explanation:
distance to be covered = 55 km
time to cover this distance = 1 hr 20 min
1 hr 20 min = 1.33 hrs (20 min = 20/60 hrs = 0.33 hrs)
The train travels the first 30 km distance at a speed of 36 km/hr
and we know that time taken = distance/speed
therefore the time taken to run this 30 km will be
time = 30/36 = 0.83 hr
The train still has 55 - 30 = 25 km to cover,
and the time left is 1.33 - 0.83 = 0.5 hrs left
to make it on time, the train must travel at
speed = distance/time = 25/0.5 = <em>50 km/hr</em>
