Reina's work (84)5 (73)9 = 84 + 573 + 9 = 8to the ninth power7to the twelfth power sam's work (84)5 (73)9 = 84⋅573⋅9 = 8to the 20th power 7 to the 27th power
which one is right
explain.

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

Alake near the arctic circle is covered by a 222-meter-thick sheet of ice during the cold winter months. when spring arrives, the warm air gradually melts the ice, causing its thickness to decrease at a constant rate. after 333 weeks, the sheet is only 1.251.251, point, 25 meters thick. let s(t)s(t)s, left parenthesis, t, right parenthesis denote the ice sheet's thickness sss (measured in meters) as a function of time ttt (measured in weeks).

What is the value of x in the equation 2(x-4) = 4(2x + 1)?