Answer:
B
Step-by-step explanation:
mean = average. to find it, add all terms, and then divide by the number of terms.
find the mean of group a:
(1+1.5+3+3.2+2.8+1.5+1.8+2.5+2.2)/9 = 2.16
find the mean of group b:
(2+2.5+3.2+3+1.8+2.4+3+1.5+1/8)/9 = 2.1694
group b is larger.
answer = b
Answer:
There are two when n= 11 and n=-11
Step-by-step explanation:
16- 7 it is right but you cant add
Answer:4 ways to make a code of 4 letters. 6C4=15, 4!=24, and 15×24=360
hope i helped
Step-by-step explanation:
