Who'd be better at speed answering? Datguy323 or some Helping Hand? (Not a serious question) Solve for the variables:

x = 3

y = 1

Step-by-step explanation:

The equations are:

and

Putting second equation in the first one:

=>

Subtracting 27 to both sides

=>

=>

Taking power 7 to both sides

=> y = 1

Now,

Taking cube root on the both sides

x = 3

(3,1)

Step-by-step explanation:

First, to find x, simply take the cube root of 27, or 3.  Thus, x = 3.

Then, simply plug it in:

Thus, y = 1

Hope it helps <3

p.s. for some reason, in a graphing calculator, it shows no solutions

Hope it helps <3

2 in a row!

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional