Answer:
c, d, a, b.
Step-by-step explanation:
I'm presuming that the original equation is
.
First, isolate c. You can do this by subtracting
from both sides:
Next, simplify to
.
Then, divide both sides by 7: 
Finally, simplify to
.
Answer: C
<u>Step-by-step explanation:</u>
Let x represent the first term (a₁)
a₁ = x
a₂ = x(-√2) = -x√2
a₃ = -x√2(-√2) = 2x
a₄ = 2x(-√2) = -2x√2
a₅ = -2x√2(-√2) = 4x
Since it is given the a₅ = √2, then we can solve: 4x =√2
Divide both sides by 4 to get: x = 
this can also be written as: 
Answer:
addition proprerty
Step-by-step explanation: