If figure ABCD is a parallelogram, what is the value of y?​

x = 27

y = 10

Step-by-step explanation:

Since AB = DC and AD = BC:

3x - 9 = 42

3x = 42 + 9

3x/3 = 51/3

x = 17

4y - 3 = 37

4y = 37 + 3

4y/4 = 40/4

y = 10

Step-by-step explanation:

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation: