Answer:

Step-by-step explanation:
Multiply across.

Then Simplify.

Answer:
A). 23
Step-by-step explanation:
Answer:
No Solution.
Step-by-step explanation:
2(x-1)-y=-8
y=2x+8
----------------
2x-2-(2x+8)=-8
2x-2-2x-8=-8
2x-2x-2-8=-8
0-2-8=-8
-2-8=-8
-10=-8
no solution
Answer:.75
Step-by-step explanation:
2x5/18 =.55555
.556 root is .745 the five makes the 4 round up
Secant is the same as 1/cos so you can just write it as 1/2pi then you can put that into your calculator as 1/cos(2pi) and it equals 1.