Answer:
a) t₀ =  1.73205 s
b) 1.0 C
Step-by-step explanation:
(A)
The time dilation (t) observed by an observer at rest relative to the time (t₀) measured by observer in motion is;

 time measured by captain
 time measured by captain
⇒  V = 0.5 c
             V = 0.5 c
⇒ t₀ =  1.73205 s
(B)
Speed of the light never exceeds by its real value. The speed of the light in any frame of reference is constant.
∵ It will be "1.0C" or just "C"
 
        
             
        
        
        
Y- y1 = m (x-x1)
y+1 = 4(x+3)
y+1=4x+12
y=4x+11
        
             
        
        
        
Step-by-step explanation:

First, let's distribute the  variable to each term in the first parenthesis:
 variable to each term in the first parenthesis:

Next, let's distribute the  variable to each term in the second parenthesis:
 variable to each term in the second parenthesis:

Next, let's group like terms together:

Finally, let's add or subtract like terms to get the result:

 
        
                    
             
        
        
        
Answer:
30
Step-by-step explanation:
brainliest?
 
        
                    
             
        
        
        
Answer:
A
Step-by-step explanation:
Plug in values
We know that x=4 and y= -8
just plug in numbers until one is correct
4-4(-8)=36
4+32=36
36=36
the answer is A