This keypad lock uses 6 letter keys to enter a 3-letter code.
enter code

What would make this lock more safe?
1) Making the codes one place longer
2) Adding one more letter key

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Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

1. find the area of the unshaded square 2. find the area of the large square 3. what is the area of the frame represented by the shaded region show

Acompany produces packets of soap powder labeled “giant size 32 ounces.” the actual weight of soap powder in such a box has a normal distribution with a mean of 33 oz and a standard deviation of 0.7 oz. to avoid having dissatisfied customers, the company says a box of soap is considered underweight if it weighs less than 32 oz. to avoid losing money, it labels the top 5% (the heaviest 5%) overweight. how heavy does a box have to be for it to be labeled overweight?