Step-by-step explanation:
-4.5x -2y = -12.5 -------(1)
3.25x -y = -0.75 --------(2)
From (2) we can make y the subject of the relation
y = 0.75+3.25x -------(3)
Input 0.75+3.25x into y in (1)
-4.5x -2(0.75+3.25x) = -12.5
-4.5x -1.5- 6.5x = -12.5
-4.5x -6.5x -1.5 = -12.5
-11x = -12.5 +1.5
-11x = -11
x = 11/11
x = 1
If x = 1,substitute 1 into x in (3)
y = 0.75+3.25x
y = 0.75 +3.25(1)
y = 0.75 +3.25
y = 4
x = 1,y = 4
Answer:118
Step-by-step explanation:
Convert from a fraction to percent. Here is the answer to the question: 59/50 as a percentage or how to convert the fraction 59/50 to percent. Use the fraction to percent calculator below to write any fraction as a percent.
Please, input values in this format: a b/c or b/c.
Examples: Three tenths should be typed as 3/10. One and one-half should be typed as 1 1/2. Note that there is a space between the the integer and the fraction.
Answer:
Whats the question?
Step-by-step explanation:
Answer:
73.5 kJ
Step-by-step explanation:
Mass of butane = 185 g
Heat of vaporization for butane = 23.1 kJ/mol
Molar mass of butane = 58.12 g/mol
Number of moles of butane = 
Energy required for burning 185 g of butane = 3.18×23.1 = 73.5 kJ
∴ Energy is required to vaporize 185 g of butane at its boiling point is 73.5 kJ
All you need to do is find what 3x45 is and then you will find the value of n, so that means that n=135 since 3x45=135
