Answer:
b
Step-by-step explanation:
b+63°=90°
b=90-63
b=27
Answer:
I do not see the model, but based on what you are telling me, I believe that both the fractions are equal is what is being shown. They are, in other words, equivalent fractions
Answer: 135/8
4-1/2*3-3/4=9/2*15/4
9/2*15/4=18/4*15/4=15*18/4*4
15*18/4*4=270/16=135/8
True, correct. The universal set
U
is characterized by ∀:∈
∀
x
:
x
∈
U
. Taking the complement yields a set
U
c
that is characterized by ∀:∉
∀
x
:
x
∉
U
c
. This is equivalent to the statement ¬∃:∈
¬
∃
x
:
x
∈
U
c
and hence
U
c
is an (the) empty set. (Depending on your theory, there may not be a unique empty set.)
