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First we need to find out the price of the tickets without the booking fee and credit card fee.4x15=602x10=2060+20=80 (This is the price of 6 tickets without fees)Now we calculate the booking fee, which i...
Make the x's the same in order to remove the x's from the eqn Multiply eqn (1) by 2 and keep eqn (2) the same to gain 2x+4y=16 and 2x+y=10To get rid of the x's, subtract: eqn (1) - eqn (2)4-1y = 16-10 whi...
Questions which ask for you to rationalize the denominator usually includes an integer and a square root of a number (x+sqrt(y)).We can use the following formula to our advantage: (a+b)(a-b)=a^2-b^2. ...
A triangle number is a number such that it is the sum of n consecutive integers, starting from 0. Eg 1, 1+2, 1+2+3... are the first 3 triangle numbers. The formula for the nth triangle number is well-know...
We have that x2 + y2 + 6x - 2y - 10 = (x+3)2 + (y-1)2 - 20 = 0 (step was motivated by the equation of a general circle (x-a)2 + (y-b)2 = ...
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