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G Q = 25

Explanation:

As  Q  is the midpoint of  G H , we have  G Q = Q H  and  G H = G Q + Q H = 2 × G Q

Now as  G Q = 2 x + 3 , and  G H = 5 x − 5 , we have  5 x − 5 = 2 × ( 2 x + 3 )  or  5 x − 5 = 4 x + 6  or  5 x− 4 x = 6 + 5  i.e.  x = 11  

Hence,   G Q = 2 × 11 + 3 = 22 + 3 = 25

hope this helps

the first question mark is 6 and the second question mark is 26 (the square root)

step-by-step explanation:

sounds & other waves originate from any vibrating object