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1/2 of 12 is 6 - 6 red counters. 6 remaining counters. 1/3 of 6 is 2 - 2 blue counters. 4 remaining counters - 4 green counters

Since the plane travels 213 miles per hour, it must travel on average 1 mile every 1/213rd of an hour.We know that there are 60 minutes in 1 hour, and 60 seconds in a minute, so there are 60 x 60 = 3600 s...

x₁ = 2x₂ = -7

Firstly, we recall that √ab=√a x √b. Noticing that 80=16 x 5 then, we have that √80=√16 x √5. Since √16 = 4 then, we have that √80=4 x √5. So, giving the final answer in the form that the question asks: c...