If pr = 4x – 2 and rs = 3x – 5, which expression represents ps?
x – 7
x – 3
7x – 7
7x + 3

ps = ps + rs

PR = 4x – 2

RS = 3x – 5

7x - 7

For this case we have that the PS segment is given by the sum of the PR and RS segments. That is to say:

Where:

Adding we have:

The same signs add up and the same sign is placed.

Option C

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:

- 70

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