9 = -7-2y
9 +7=16
16/-2 -2y/-2
-8 = 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

Yea they are cuz they have the same side and angle measurements
Secxcotx=cscx
1/cos * cos/sin =cscx
cos/sincos=csc
1/sin=csc