For 12a, they are asking about winter sports, they could ask about all sports.
For 12b, they ask an audience about the show they came to see; which is inherently a bias as they are going to be partial towards certain contestants; they could ask them about random contestants of unaffiliated shows.
For 13a, it should be continuous, and I'm sorry but I don't know the types of graphs available.
For 13b, I believe it should be discreet, and once again apologize for not knowing the types of graphs.
<span>4 ⋅ 6 + 5 ⋅ 7 + 6 ⋅ 8 + ... + 4n( 4n + 2) = 4(4n+1)(8n+7)/6
is false because it isn't even true when n=1.
4 ⋅ 6 = 4(4*1+1)(8*1+7)/6
24 = 4(5)(15)/6
24 = 50
Also 4n(4n+2) is not even the correct formula
for the nth term. The correct nth term formula
of 4 ⋅ 6 + 5 ⋅ 7 + 6 ⋅ 8 + ...
is (n+3)(n+5). So it's wrong all the way around.</span>
Answer:
Step-by-step explanation:
Angle ABC is a right angle because all interior angles of a rectangle are right angles.
Answer:
$151.20
Step-by-step explanation
we will use (0.35*48)+48 to represent Robins donation
we will use 48- (0.20*48)to represent Jessica's donation and $48 for Travis's
so
0.35*48+48=64.8
64.8+48-(0.2*48)+48=
64.8+48-9.6+48
64.8+38.4+48=151.2
Hope this helps
