Astudent performed the following system to find the solution to the equation x2-2x-8=0

B. in step 1

Step-by-step explanation:

Given that a student performed the following steps to find the solution of the quadratic equation .

Step 1: Factor the polynomial into (x-4) and (x-2).

Step 2: x-4=0 and x-2=0

Step 3: x=4 and x=2.

Now we need to find about which step has the error.

let's multiply (x-4) and (x-2)

we get :

While original problem has -8 as the last term. So that means factors are wrong.

Hence choice B. in step 1. is correct

b) 36

step-by-step explanation:

18 times 2 is 36

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.