1 . 3x2+5y2=1

• A. $\frac{4}{5}$
• B. $\sqrt{\frac{2}{5}}$
• C. $\frac{2}{5}$
• D. $\frac{2}{\sqrt{5}}$

Answer: Option B

Explanation:

2 . 3x2+5y2=15

• A. $\sqrt{\frac{3}{5}}$
• B. $\sqrt{\frac{5}{3}}$
• C. $\sqrt{\frac{5}{2}}$
• D. $\sqrt{\frac{2}{5}}$

Answer: Option D

Explanation: