Answer: The answer is 1600.
Step-by-step explanation:
300 - 240 = 60
60 = 20%
Respuesta:El descuento fue del 20%.
Espero te sirva :
When a quadratic equation ax^2+bx+c has a double root, the discriminant,
D=b^2-4ac=0
Here
a=2,
b=b,
c=18
and
D=b^2-4ac=b^2-4*2*18=0
solve for b
b^2-144=0
=> b= ± sqrt(144)= ± 12
So in order that the given equation has double roots, the possible values of b are ± 12.
Here is a note: the sum of the 2 shorter sides have to be greater than the longest side. Sorry that i cant help more.
