If 2x + 3y = 15 and xy = 6, find 4x2 + 9y2Need a quick help for my homework please help.
1 answer:
You might be interested in
I hope this helps in answering your question! If you have any inquiries to the solution, feel free to leave a comment!
Answer:
y ≈ 5.2
Step-by-step explanation:
∠ F = 180° - (42 + 48)° ← sum of angles in a triangle
∠ F = 180° - 90° = 90°
Thus Δ DEF is right at F
Using the sine ratio in the right triangle
sin48° = =
=
( multiply both sides by 7 )
7 × sin48° = y , then
y ≈ 5.2 ( to the nearest tenth )