Answer: Yes, the set of real numbers is closed under addition.
Explanation:
Let x and y be two real numbers. Their sum x+y is some other real number. This is what it means when we say the set of real numbers is closed under addition. Taking any two numbers and adding them will get us some other real number.
There is no way to have x+y be nonreal while x,y are both real.
Sin (x) = -13/15
Hope this is correct
Using the distance formula:-
radius = √ ( (8 - 2)^2 + (7 - -1)^2 )
= √ (6^2 + 8^2) = √100 = 10 (answer)
Answer:
there are 120 different sundaes with three toppings you can order.
Step-by-step explanation:
If the chosen toppings must be different, then that means it's a Combination where the order doesn't matter (as long as they're all different).
Equation: 10C3
Forming Equation: 10!/(10-3)!*3!=10*9*8*7!/7!*3!=10*9*8/6=720/6=120
Therefore, there are 120 different sundaes with three toppings you can order.
