Double a number plus five is seventy-five? Double a number plus five is seventy-five.

You get ten when subtracting sixteen from twice a number.

If a number is tripled and then reduced by nine, the result is sixty-six.

( Answer all please and thank you )

 35 doubled is 70, plus 5 equals 75. so 35 is the number.

                13 twice is 26, 26 subtracted by 16 is 10. so the number is 16.

                25 tripled is 75, 75 reduced by 9 is 66, so the number is 25.

i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation:

figure c

step-by-step explanation:

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