60×120=7200
7200÷100=72
60+72=132
answer=£132
hope this helps.....
Two squares are congruent if they have the same side length.
Without speeding up it would take 5 1/3 seconds.. not sure if it speeds up in the question?
Means the number you can use
remember we can't divide by zero
domain is x^2-9
set to zero to find values we can't use
x^2-9=0
x^2=9
x=+/-3
domain=all real numbers except -3 and 3
