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which of the following expressions is not equal to 81x^3y^5?

a.
3^2 xy^2 multiplied by 3^2 x^2 y^2
b.
3xy(27xy)xy^3
c.
3^3 x^3 multiplied by 3^2 y^5
d.
3^4 multiplied by x^5 multiplied by y^2 multiplied by x^-2 y^3

What number produces an irrational number when multiplied by -1.25

To make a monster appear large in a movie, a human actor wore a costume and walked through a scale model of a city. the scale used was 1 inch = 15 feet. the actor is 60 inches tall. how tall does the monster appear in the movie? question 5 options: 720 feet 75 feet 4 feet 900 feet

Whats the name of the vertical axis