Question

pls answer with solution pls pls..
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Answer 1

Answer:

No

Step-by-step explanation:

40 : 50 : 100 : 500

extreme terms = 40 and 500

middle terms = 50 and 100

40 x 500 = 50 x 100

20000 = 50000

LHS is not equal to RHS

So 40, 50, 100 and 500 are not in proportion .

Answer 2

Answer:

As light from a star races through our atmosphere, it bounces and bumps through the different layers, bending the light before you see it. Since the hot and cold layers of air keep moving, the bending of the light changes too, which causes the star's appearance to wobble or twinkle.