So, at the beginning there are a total of 25*3=75 siblings (we can assume that each of them had exactly 3 siblings, that's what average means; that we can assume this).
Now we have 25+1=26 students and the number of siblings is 75+8=83
and the average is

, and rounded it's 3.19.
Answer:
Step-by-step explanation:
ACB is an inscribed angle
so ∠ACB = 1/2 mAB
Hence we got

C is the right answer I’m positive
Step-by-step explanation:
In Figure 5.9 below
ABCD is a parallelogram
with m(∠ABC) = 43o
CD
. A
line through A meets
at E and m(∠AED) = 68o
a. m(∠ADE)
.
Find
b. m(∠ DAE)
c. m(∠BCD)