Answer:
5.29150262213
Step-by-step explanation:
To find the answer, find the square root of 28.
The answer is then 5.29150262213
5x + 7x = 180 ⇒ properties of linear pair
12x = 80 ⇒ addition property (since (5 + 7)x = 12x)
x = 15 ⇒ Division property (since we divide both sides by 12)
Answer:
multiply 77 by 10 which is 770 then you multiply it by 5 which is half of 10 so 385 then add them together and you get 1155
