First you need to simplify the left side of the equation to get

Then you add by two on both sides to get

Finally you divide by 2 on both sides to get
Answer:
Giorgio
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
20-(5×2)
5×2=10
20-10=10
Answer: AM = 76 and AB = 152
Step-by-step explanation:A little annoying but basically AM times 2 shoud equal AB or (2x+34)*2 = 6x+26 solve to get x equals 21 plug back in to get 76 for AM and 152 for AB
Answer:
The surface area is
Step-by-step explanation:
we know that
The surface area of the square pyramid is equal to the area of the square base plus the area of its four lateral triangular faces
so
![SA=b^{2}+4[\frac{1}{2}(b)(l)]](https://tex.z-dn.net/?f=SA%3Db%5E%7B2%7D%2B4%5B%5Cfrac%7B1%7D%7B2%7D%28b%29%28l%29%5D)
where

-----> the slant height
substitute the values
![SA=9^{2}+4[\frac{1}{2}(9)(12)]](https://tex.z-dn.net/?f=SA%3D9%5E%7B2%7D%2B4%5B%5Cfrac%7B1%7D%7B2%7D%289%29%2812%29%5D)