Which relationships have the same constant of proportionality between yyy and xxx as the equation y=\dfrac{5}{2}xy= 2 5 ​ xy, equals, start fraction, 5, divided by, 2, end fraction, x? Choose 3 answers: Choose 3 answers: (Choice A) A 5y=2x5y=2x5, y, equals, 2, x (Choice B) B 8y=20x8y=20x8, y, equals, 20, x (Choice C) C (Choice D) D (Choice E) E xxx yyy 111 2\dfrac{1}{2}2 2 1 ​ 2, start fraction, 1, divided by, 2, end fraction 444 101010 777 17\dfrac{1}{2}17 2 1 ​ 17, start fraction, 1, divided by, 2, end fraction Stuck?Watch a video or use a hint. Report a problem Get 3 of 4 questions to level up to Familiar

80 points pls brainliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?