Answer:
680
Step-by-step explanation:
Use the binomial coefficient where you choose 
numbers out of 
possible numbers and find the total amount of combinations since order does not matter:
Thus, you can make 680 three-non-repeating-number codes
it equals -1
you can think of it as 7-6=1 and at the end you can just add the negative sign
Hope it helps :))
Answer:
Step-by-step explanation:
40/32 ?=? (40 + 12.5) / (32 + 10)
1.25 ?=? 52.5 / 42
1.25 = 1.25
similar via SAS
Answer:
2.75
Step-by-step explanation:
275% = 2.75 in decimal form. Percent means 'per 100'. So, 275% means 275 per 100 or simply 275/100. If you divide 275 by 100, you'll get 2.75 (a decimal number)
Answer: 14
Explanation:
9*8=72
You have to multiply the 9 per hour times the 8 hour work day.
155-72=83
We have to get $83 in deliveries.
83/6=13.8333...
The $83 dollars we have to earn in deliveries divided by the $6 we earn for each delivery equals 13.8333...
This means that Bobby must at least have 14 deliveries to reach his goal. (You can’t have a fraction of a delivery)
