It looks like ∆ is defined as
<em>a</em> ∆ <em>b</em> = (<em>a</em> + <em>b</em>)² + 5
If that's the case, then
1 ∆ (-4) = (1 + (-4))² + 5 = (-3)² + 5 = 9 + 5 = 14
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The probability of compound events combines at least two simple events, either the union of two simple events or the intersection of two simple events.
Answer:

Step-by-step explanation:
If we have a pizza that has
slices and we want to split it between 4 friends, then each friend will get
slices.
Now, Harris is one of those friends so he receives
slices, but he eats one less than he receives. Therefore, we subtract one from this expression to get our final answer of
.
Hope this helped!