If r = -\sqrt{2}, and a5 = \sqrt{2}, what is the first term of the sequence? select the letter of the correct answer. a. \sqrt{2} b. 8\sqrt{2} c. 4\sqrt{2} d. 2\sqrt{2}

C

Step-by-step explanation:

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:

-10i^2-4i

step-by-step explanation:

evaluate for p=2,q=5i

(2−4)(2+5i)i

(2−4)(2+5i)i

=−10i2−4i

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80