Answer:
The answer is $10
Step-by-step explanation:
5 times 2 equals 10
 
        
                    
             
        
        
        
Use completion of sq method
x^2+y^2+14x+10y-7=0
(x+7)^2+(y+5)^2=7+49+25
(x+7)^2+(y+5)^2=81
so centre is(-7,-5) radius is9
        
             
        
        
        
Answer:
6
h
+
2
y
+
4 is your answer
Step-by-step explanation:
Hope this helps! :)
 
        
                    
             
        
        
        
Answer:
x=5 and y=-2
Step-by-step explanation:
3x+5y=5
-(7x+5y=25)
-4x=-20
x=5
plug 5 into one of the equations. 3(5)+5y=5
y= -2
 
        
             
        
        
        
Answer:
x ≈ 2879.4 m
Step-by-step explanation:
Measure of ∠DAC = 10°
Measure of ∠DAB = 90°
Measure of ∠BAC = 90° - 10° = 80°
By applying cosine rule in ΔABC,
cos(80°) = 
               = 
0.17365 = 
x = 
x = 2879.36
x ≈ 2879.4 m