The question regards reverse-percentages. This requires you to realise what percentage of the original amount the sale price represents. If the original price is 100% and you have lost 20%, the sale price is 80% of the original.
To get from the original price to the sale price, you would multiply by 80%, or its respective decimal multiplier of 0.8. Therefore it follows that to go the other way (to go from the sale price to the original price), you need to divide by 0.8:
$636 / 0.8 = $795
In case you weren't sure how to find the decimal multiplier, all you have to do is divide the percentage by 100. So for a percentage of 156%, the decimal multiplier is 156 / 100 = 1.56
I hope this helps
20.4117 kilograms is the answer
The answer is 1. 9 over 9 is a whole, which is one. 1 to the second power is 1. 1 to the 7th power is 1. No matter how many exponents you put on 1, it will always stay one. So the answer is 1.
Determine the number of solutions using the discriminant D=b^2-4ac
D=m^2-4•3•(-3)
Calculate the product D=m^2+36
Since D > 0 for any value of m
The quadratic equation has 2 real roots.
The emeperical rule or 68-95-99.7% rule gives the approximate percentage of the data that fall within or standard deviation (68%) two standard deviations (95%) and three standard deviations (99.7%) of the mean. this rule should be applied only when the data is approximately normal.