Answer:
see below
Step-by-step explanation:
(ii)
Given 4000 seconds to hours you divide the value by 3600 sec
=4000/3600 =1.1111
=1.0 hour (1 significant figure)
(b)
speed = 212 miles/hour
distance= 1 mile
time = distance/speed = 1/212 * 3600 =16.98 seconds
The number of seconds in an hour to 1 significant figure is 1.1111.
The number of seconds the plane takes to travel 1 mile is 16.98 seconds.
We have to determine, the number of seconds in an hour to 1 significant figure.
And the number of seconds the plane takes to travel 1 mile.
According to the question,
1. Number of seconds = 4000
The number of seconds in an hour is,
[tex]= 60 \times 60\\\\= 3600[/tex]
Therefore,
The number of seconds in an hour to 1 significant figure.
[tex]= \dfrac{4000}{3600}\\\\= 1.1111[/tex]
Hence, The number of seconds in an hour to 1 significant figure is 1.1111.
2. A plane travels at a speed of 212 mph,
The number of seconds in an hour is,
[tex]= 60 \times 60\\\\= 3600[/tex]
Therefore,
The number of seconds the plane takes to travel 1 mile is,
[tex]\rm = \dfrac{1}{212} \times 3600 \\\\= 16.98 \ seconds[/tex]
Hence, The number of seconds the plane takes to travel 1 mile in 16.98 seconds.
For more details refer to the link given below.
https://brainly.com/question/5245372
