The above data represents function because all the input values have unique output values.No input values have multiple output values.
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Answer: 648</h3>
Explanation:
For the first slot, we have 9 digits to choose from (1 through 9).
Whatever we pick for the first choice, we have 9 choices left for the second slot. Say we picked 2 for the first slot. That means we have {0,1,X,3,4,5,6,7,8,9} to choose from. I used X to indicate we can't pick that digit any more. You'll see there are 9 items in that list.
Then for the third slot, we had 8 choices to pick from
Overall we have 9*9*8 = 81*8 = 648 different area codes possible where the first digit cannot be zero.
Answer:
The second to last option
Step-by-step explanation:
imagine that the diagram only shows part of each line, or edge. instead, they extend forever in both directions. imagining RQ extending to both sides lets you find other "extended" intersecting lines. in this case, QU and SR
here is an example in ascii art:
___________
| |
|___________|
Imagine that the separated lines are instead all sides of a rectangle. My ascii is limited.
Nothing here intersects
__|______________|__
| |
__|______________|__
| |
now you can see intersecting lines. so you can answer the question correctly.
Answer:
12 square units
Step-by-step explanation:
Hope it helps