The square root of 81 is 9, this can be proven by squaring 9, which's result is 81.
Answer:
144 codes are possible
Step-by-step explanation:
Okay for the first digit, we shall be selecting one out of 3,4,5,6.
Meaning we are selecting one out of four choices
The number of ways this can be done is 4C1 ways = 4 ways
For the second digit, we have 5,6,7 or 8, we are still selecting 1 out of 4 selections and the number of ways we can do this is also 4 ways
And lastly , we can choose any digit for the last number expect 5 , so from 0 to 9, we are removing 1 which means we are left with 9 choices
So the number of different area codes possible are ; 9 * 4 * 4 = 144 codes
0.625 as a percentage is 62.5%
Answer:
178 meters in 2 seconds = 890 meters in 10 seconds.
Step-by-step explanation:
Given : 178 meters in 2 seconds.
To find : How many meters in 10 seconds ?
Solution :
Applying unitary method,
In 2 seconds there is 178 meter.
In 1 second there is meter.
In 1 second there is 89 meter.
In 10 seconds there is meter.
In 10 seconds there is 890 meter.
Therefore, 178 meters in 2 seconds = 890 meters in 10 seconds.
Answer:
72
Step-by-step explanation:
I completed the sample work