Step-by-step explanation:
To check if a solution is extraneous, simply plug it back into the original equation.  If it works, then solution isn't extraneous.
√(2x−1) = 7
√(2(25)−1) = 7
√(50−1) = 7
√(49) = 7
7 = 7
So the solution isn't extraneous.
 
        
             
        
        
        
Answer:
Two subsets that form set of real numbers 
You can take positive numbers and negative numbers subset 
One subset become (- infinity,0]
other subset (0, infinity)
 
        
             
        
        
        
Setup is
y = k/x
8 = k/3
k = 24
Now use 6 for y
6 = 24/x
x = 24/6 = 4 or A
        
             
        
        
        
Answer:
8
Step-by-step explanation:
Since the entire triangle was translated, each point gets shifted 9 left and 3 up which does not alter the triangle measurements, so all sides and angles of triangle' is the same as the original.
 
        
             
        
        
        
Answer:
I got eleven 5 dollar bills and and I got 3 ten dollar bills 
Step-by-step explanation:
what i did was start out with 85/5, then that was 17 so I started minusing 2 fives to = 1 ten so 15 5's and 1, 10 then so forth 13 5 dollar bills and 2 10 dollar bills, 11 5 dollar bills and 3 ten dollar bills. y=-2x+17