First, work out the difference(increase) between the two numbers you are comparing. So, the difference would be <em>100-80</em>, which will equal <em>20</em>.
Then, divide the increase by the original number and multiply the answer by 100. So, that would be <em>20÷100</em>, which would be <em>0.2</em>, then it would be <em>0.2⋅100</em>, so back to <em>20</em>.
The percent of increase should be 20.
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Multiply sides by ( x - 2 )
Simplification
Subtract sides 7x
Simplification
Negatives simpliflies
Divide sides by 4
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Answer:
You usually wouldn't divide lengths
Step-by-step explanation:
Use bodmas/pemdas rule
4^3*(4)-5^0
64*4-1 anything to the power zero is one
256-1
255