Answer:
: c2 = a2 + b2 - 2ab cos C
c²=20²+15²-2×15×20×cos50
c²=400+225-600×0.64
c²=241
c=√241=15.5ft
 
        
             
        
        
        
Answer:
The graph in the attached figure
Step-by-step explanation:
we have
 ----> inequality A
 ----> inequality A
solve for y


 
 
The solution of the inequality A is the shaded area above the dashed line
The slope of the dashed line is positive
The y-intercept is the point 
The x-intercept is the point 
 ----> inequality B
 ----> inequality B
The solution of the inequality B is the shaded area below the dashed line
The slope of the dashed line is positive
The y-intercept is the point 
The x-intercept is the point 
Using a graphing tool
The solution of the system of inequalities in the attached figure
 
        
             
        
        
        
Answer:
18 boys 
Step-by-step explanation:
we add 2 and 3 because they are equal parts:
2+3=5
Then we divide 45 by 5 because we want to find what 1 part equals"
45/5=9
We now do 9*2 to get an answer of:
9*2=18
hope this makes sense!
 
        
             
        
        
        
Answer:
i think 66.5 miles per hour
Step-by-step explanation:
 
        
             
        
        
        
2^6 is the answer. Multiply the rules because it’s a rule