Let's do 51 and 52.
51. The contrapositive has the same truth value as the original statement. That's opposed to the converse, which may or may not be true independent of the original statement.
The contrapositive of IF P THEN Q is IF not Q THEN not P. They're equivalent. Here that's If the cat is not female then it is not tricolor.
Answer: C
52.


For the statement to be true, the exponent must be zero:



Both positive 2 and negative 2 have a square of 4.
Answer: K
By the way, usually we assume
so the restriction that
isn't really necessary. Think of the definition of a polynomial or the binomial expansion:


For these common equalities to work when
we need to define 
Answer:
76 unit
Step-by-step explanation:
because added the rectangle size and added the 60 with 16
Answer:
53
Step-by-step explanation:
2*19 =38
then by substituting 2x=38
then,
38+15=53
Answer:
Step-by-step explanation:
la raiz cuadrada es 1/6
8 x 3 is 24
3 x 8 is 24
6 x 4 is 24
24 x 1 = 24
Hope that helped you and I didn't know when you meaned by 2 facts and 1 fact