<span>Units are used as a standard for measurement of the same quantity. It is a definite magnitude of the quantity that is defined by a convection.
Without them we could not be able to measure things.
All physical quantities have their units, For example: length is measured in meters, weight is measured in kilograms, power is measured in watts,...
With units we can understand "physical" problems and have an exact answer of the problem.</span>
No solution because -3a +3a is cancelled out and 6 does not equal 7
Step-by-step explanation:
Gravitational potential energy is:
PE = mgh
Given PE = 96000 J and m = 80 kg:
96000 J = (80 kg) (9.8 m/s²) h
h ≈ 122 m
Round as needed.
Answer:
c d e?
Step-by-step explanation:
btw I'm not sure :")
Answer:
40%
Step-by-step explanation:
To find the percentage difference between the families with 2 dogs and the families with no dogs, we need to find their difference first.
Difference = 45 - 27
= 18
Now that we know the difference, we just have to put the difference over the total as a fraction and multiply by 100%.
Percentage difference = 
× 100%
= 40%
