Choose all properties that were used to simplify the following problem: [38 + 677] + (-38) [677 + 38] + (-38) 677 + [38 + (-38)] 677 + 0 677 additive identity additive inverse commutative property of addition associative property of addition distributive property

We have to determine the properties used in the simplification of the given expression:

= (Commutative property of addition)

"Commutative property of addition states that for any real numbers say 'a' and 'b', a+b = b+a"

Now,  

= (Associative property of addition)

"Associative property of addition states that for any real numbers say 'a', 'b' and 'c',

a+(b+c) = (a+b)+c

Now,

= 677 + 0    (Additive inverse property)

A number 'a' is said to have an additive inverse '-a' if "a+(-a) = 0".

677 + 0

= 677 (Additive identity)

'0' is said to be additive identity if "a+0 = 0+a = a".

81 seats

step-by-step explanation:

if you multiply 0.65 times 125 then you get 81.5 seats. well since you can't have half of a seat you have to round down and get 81 seats in the no children zones. that leave 44 seats outside of the no children zone.

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !