You cant solve for x or y
Answer:
Step-by-step explanation:
Let
be the greater number and
be the smaller number. We know that their difference is 15, so we have

Then, we have the following information: if we add twice the greater (2x) and 8 (2x+8), the result is 3 times the lesser (3y) minus four (3y-4). So, we have

So, we have the follwing system:

From the first equation, we can derive
, and substitute this expression in the second equation to get

Substitute this value for y in the first equation to get

Answer:
Option C
Step-by-step explanation:
have a great Day
y = (x –12)^3 – 7
set y=0
0 = (x –12)^3 – 7
add 7 to each side
7 = (x –12)^3
take the cube root of each side
7^ 1/3 = x-12
add 12 to each side
12 + 7^(1/3) = x
this is the only real root
the other 2 are imaginary
The center of 400z is the pair of y