Albert simplified the numerical expression. Expression : +13 + 2
(1 +1+2)+(++)
Step 1:
Step 2:
4+
Step 3:
4+
Step 4:
4+
+(1+0)
Step 5:
(4 + 1) + 7
Step 6:
Which property did he use to justify Step 5?
associative
distributive
commutative of addition
commutative of multiplication

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64

in counting the number of heads in 4 coin flips, the probability that we get exactly one head is the probability that we get anyone of the following 4 outcomes: httt, thtt, ttht, or ttth. each has probability 1/16, so the probability to get exactly one head in 4 flips is 1/16 + 1/16 + 1/16 + 1/16 = 4/16 = 1/4.