This would be considered a reasonable estimate because if you were to use estimation, you can round 289 to the nearest hundred (300), which is divisible by 60. When dividing 300 / 60, you will get 5 hours, which is 0.5 greater than 4.5 therefore making it a reasonable estimate. In addition, when actually dividing 289 / 60, you will get approximately 4.8 hours, which is close to the estimate, 4.5 hours.
Since, the boiling point of jet fuel = 329 °F
We have to convert the boiling point of jet fuel in .
The expression which is used to convert to is given by:
C =
=
=
= 165
Therefore, the boiling point of jet fuel is 165 .
Taking K as the right angle =>
cos (L) = segment LK / hypotenuse
=> cos(L) = segment LK / √ [ (segment LK)^2 + (segment KJ)^2 ]
Let's called the input 'z'
When we plug 'z' in the function we get ;
And we know that, this is equal to 19, so ;
Let's rearrange the equation.
So we have a quadratic equation here.
We'll use this formula to solve it :
The formula is used in equation formed like this :
In our equation,
a=2 , b=3 and c=-14
Let's plug in the values in the formula to solve,
So,
So the input can be both, 2 and