Write a two-column proof.
given: 7y=8x-14; y=6

prove: x=7

i need making a two-column proof with the statements and the reasons, ! you! ( this is what i have so far)

statements | reasons

1. 7y=8x-14; y=6 | given

2. 7(6)=8x-14 | substitution

3. |

4. |

5. x=7 |

(i just stopped at 5 for right, that's not the exact steps i think the two-column proof actually has)

you again for whoever me! be blessed

Given - 7y=8x-14 : y=6

Substitution Property - 7(6)=8x-14

Distributive Property - 8x-14=42

Addition Property - 8x=56

Division Property - x=7

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:

it is 28 degrees colder in detroit than philadelphia.

step-by-step explanation:

what number adds to 21

-7 + ? = 21

-7 + 28 = 21

hope it