Answer:
x>−7
Step-by-step explanation:
left side:
-8(x-3)+5x
distribute -8 into (x-3)
-8x+24+5x
combine like terms
-3x+24
right side:
9(x+12)
distribute 9 into (x+12)
9x+108
-3x+24<9x+108
Subtract 24 on both sides
-3x< 9x+108-24
combine like terms
-3x<9x+84
Subtract 9x on both sides
-3x-9x<+84
combine like terms again
-12x<84
Multiply both sides by -1 (reverse the inequality)
(-12x)(-1)>84(-1)
12x>-84
divide both sides with 12
x>−7
hope this helps
There are several ways the door can be locked, these ways illustrate combination.
There are 3375 possible combinations
From the question, we have:
--- the number of digits
---- the number of actions
Each of the three actions can either be:
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The number of ways of pressing a button is:
Apply combination formula
The number of ways of pressing a pair is:
Apply combination formula
So, the number of ways of performing one action is:
For the three actions, the number of ways is:
Hence, there are 3375 possible combinations
Read more about permutation and combination at: