3 years ago

Your locker combination has 3 numbers from 0 to 15 each number must be different how many locker combinations are there

Mathematics

1 answer:

Vladimir79 [104]3 years ago

5 0

There are 3,360 combinations to choose from if the lock is from 0-15.

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Pwease help me anyone. thanks :-) :-) :-) :-) :-) :-) :-) :-)!!!!

adell [148]

A)
$x+3$

b)
$x(x+3)=340\\
x^2+3x-340=0$

c)
$x(x+3)=340\\ x^2+3x-340=0\\
\Delta=3^2-4\cdot1\cdot(-340)=9+1360=1369\\\sqrt{\Delta}=37\\
x_1=\dfrac{-3-37}{2}=-20\\
x_2=\dfrac{-3+37}{2}=17$

It's 17.

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