ayoismeisalex
11.07.2019 •
Mathematics
the sundae bar at sarah's favorite restaurant has 5 toppings. in how many ways can sarah top her sundae if she is restricted to at most 2 toppings?
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Ответ:
15 ways.
Step-by-step explanation:
There are 5 ways to have 1 topping.
There are 5C2 = 5*4 / 2*1 = 10 ways of having 2 toppings.
Ответ:
-3[14-5x-20]
-42+15x+60
18+15x is your answer simplified.