I hope this helps you
9x=81.16
x=9.16
x=144
420+35.50x-310.75y=z im really not 100 precent sure
600 = 45x (x= minutes)
13.3333333=x
1*(2/3) = 80 minutes
80x= 13.333333*80
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Therefore the airplane flies 1066.66664 km in 80 minutes or 1 2/3 hours
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X<<span>y+<span>3 its simple here is your answer</span></span>
So √175=√25×7=√25×√7=5√7 . We cannot further simplfy √7 so we'll simplify the other square root.
