7 because if its between 7.1 and 7.4 itll round to 7 and if it between 7.5 and 7.9 it would be 8.  therefore the answer is 7
        
                    
             
        
        
        
Answer:
A. 3/2
Step-by-step explanation:
To find the lenght of the side opposing the 30° angle, you need to use trigonometry, since it's a right-angled triangle. You have your 30° angle and you have the side beside : therefore, you can use the sine :
sin(30) x 3 = ?
0,5 x 3 = ?
1,5 = ?
1,5 = 3/2
 
        
             
        
        
        
Answer:
The solutions are  and
  and 
Step-by-step explanation:
we have

Divide by  both sides
 both sides
 ------>
 ------> 
we know that
The formula to solve a quadratic equation of the form  is equal to
 is equal to

in this problem we have

so

substitute






 
        
                    
             
        
        
        
Answer:
= 80
Step-by-step explanation:
64000/80 = 80
 
        
                    
             
        
        
        
Hello!
The answer is:
Luke did a work of 308N.m or 308 Joules.
<h2>
Why?</h2>
When a force is applied on a object making it to move covering a distance we call it "work". The movement caused by the force, will follow the same direction that the force.
We can calculate the work done by using the following equation:

Where,
Work is the transferred energy.
Force, is the force applied to the object.
Distance, is the distance covered due to the applied force.
α, is the angle at the work is done.
We are given the following information to calculate the work done:

So, substituting the given information into the equation to calculate work, we have:

Hence, we have that Luke did a work of 308N.m or 308 Jouls.
Have a nice day!