Solve the system of equations below:
3x - y = 6
2x + 5y = 15

1) if you are solving for yy= -6+3x  and if you are solving for X.. x=2+y/3  

2)if you are solving for yy=3-2x/5  and if you are solving for X..x=15/2-5y/2

Step-by-step explanation:

:)

christopher is 272,195 year old

step-by-step explanation:

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places