A
Plug the values in and check
Mark brainliest please
        
                    
             
        
        
        
Answer:
1) w₁=4 - i w₂= -4 + i
2) w₁= 3 - i w₂= -3  + i
3) w₁= 1 + 2i w₂= - 1 - 2i
4) w₁= 2- 3i w₂= -2 + 3i
5) w₁= 5 - 2i w₂= -5 + 2i
6) w₁= 5 - 3i w₂= -5 + 3i
Step-by-step explanation:
The root of a complex number is given by:
![\sqrt[n]{z}=\sqrt[n]{r}(Cos(\frac{\theta+2k\pi}{n}) + i Sin(\frac{\theta+2k\pi}{n}))](https://tex.z-dn.net/?f=%5Csqrt%5Bn%5D%7Bz%7D%3D%5Csqrt%5Bn%5D%7Br%7D%28Cos%28%5Cfrac%7B%5Ctheta%2B2k%5Cpi%7D%7Bn%7D%29%20%2B%20i%20Sin%28%5Cfrac%7B%5Ctheta%2B2k%5Cpi%7D%7Bn%7D%29%29)
where:
r: is the module of the complex number
θ: is the angle of the complex number to the positive axis x
n: index of the root
1) z = 15 − 8i  ⇒ r=17 θ= -0.4899 rad
w₁= =4-i
=4-i
w₂= =-1+i
=-1+i
2) z = 8 − 6i  ⇒ r=10 θ= -0.6435 rad
w₁= = 3 - i
= 3 - i
w₂= = -3  + i
= -3  + i
3) z = −3 + 4i  ⇒ r=5 θ= -0.9316 rad
w₁= = 1 + 2i
= 1 + 2i
w₂= = -1 - 2i
= -1 - 2i
4) z = −5 − 12i  ⇒ r=13 θ= 0.4426 rad
w₁= = 2- 3i
= 2- 3i
w₂= = -2 + 3i
= -2 + 3i
5) z = 21 − 20i  ⇒ r=29 θ= -0.8098 rad
w₁= = 5 - 2i
= 5 - 2i
w₂= = -5 + 2i
= -5 + 2i
6) z = 16 − 30i ⇒ r=34 θ= -1.0808 rad
w₁= = 5 - 3i
= 5 - 3i 
w₂= = -5 + 3i
= -5 + 3i
 
        
             
        
        
        
Answer:
4. j(11) = 8
I think it is linear
5. g(-3) = 18
No, it's a parabola since x is to the second power
6. f(-7) = 5
No, I think it's an absolute value function
7. h(0) = 13
I think it is linear, just the slope is 0
Step-by-step explanation:
 
        
                    
             
        
        
        
9m+14=2m
9m-2m= -14
7m = -14
m= -2
to check: u need to chance the m to -2
9m - 2m= -14
9 × -2= -18
-2 × -2= -4
-18 - (-4)= -14 
i think is right
        
             
        
        
        
Since it starts with 2 envelopes, subtract 2 from 17 to get how many and in all 3 packs.
17 - 2 = 15
Now, we divide that number by 3 to get how many are in each envelope.
15 / 3 = 5
There are 5 envelopes in each pack.