10 x 10 x 10 x 10=10^4=10,000 keys
Hope this helps!!
As QR is the median of trapezoid MOPN,

Option D is the answer
Answer:
~p -> ~q
Step-by-step explanation:
A conditional statement in logic may be symbolized by the alphabets, p and q, It always contains an if - then statement.
There is always a logical connector in the statement with the symbol ->.
A conditional statement is false if the hypothesis is true and the conclusion is false.
The statement in the answer above reads in word; "if not p then not q".
Answer: 
Step-by-step explanation:
The area of a square is 
Substituting d for x, you get 1/2x^2
Hope this helps <3