Step-by-step explanation:
p : q
= 2⁷ : 2⁹
= 2⁰ : 2²
= 1 : 4.
Answer:
[tex]\dfrac pq=\dfrac{ 2^7}{2^9} \\\\\dfrac pq=\dfrac{ 2^7}{2^7\cdot2^2} \\\\\dfrac pq=\dfrac{1}{2^2} \\\\\dfrac pq=\dfrac14[/tex]
p/q= 2⁷/2⁹ ⇒ p:q = 1:4 = 0.25