Answer:
I think is 4x
Step-by-step explanation:
because nothing changes so x=4x
Answer with Step-by-step explanation:
Let F be a field .Suppose
and 
We have to prove that a has unique multiplicative inverse.
Suppose a has two inverses b and c
Then,
where 1 =Multiplicative identity

(cancel a on both sides)
Hence, a has unique multiplicative inverse.
Answer:
i really donr know
Step-by-step explanation:
im so sorry
Answer:
Step-by-step explanation:
Area of semi-circle is
≈
× 4² ÷ 2 ≈ 25 cm²
Area of square is 8² = 64 cm²
Total area is 25 + 64 = 89 cm²