Answer:
9
Step-by-step explanation:
(9*3) = 27 which is 20 more than 7
║a+9║/7=5
you multiply 7 on both sides which cancel out 7.
now it ║a=9║=35
and now it would be a+9=35 and a+9=-35 then solve it.
35-9 and 9-(-35)= 26 and -44
hope this helped!
answer: you're missing the problem
Given :
A boat is being pulled into a dock with a rope attached to the boat at water level. When the boat is 12 feet from the dock, the length of the rope form the boat to the dock is 3 feet longer than twice the height of the dock above the water.
To Find :
The height of the dock.
Solution :
This will make a right angle triangle as given in link below .
Now , applying Pythagoras theorem :
![(2h+3)^2=h^2+12^2\\\\4h^2+9h+9=h^2+144\\\\h^2+4h-45=0\\\\(h-5)(h+9)=0](https://tex.z-dn.net/?f=%282h%2B3%29%5E2%3Dh%5E2%2B12%5E2%5C%5C%5C%5C4h%5E2%2B9h%2B9%3Dh%5E2%2B144%5C%5C%5C%5Ch%5E2%2B4h-45%3D0%5C%5C%5C%5C%28h-5%29%28h%2B9%29%3D0)
Now , h = 5 or h = -9 .
Now , height cannot be negative .
So , height of the dock is 5 ft .
Hence , this is the required solution .
To get heads: 1/2 because there are two sides to a coin.
There are 6 sides on a cube and 2 numbers are greater than 4 (5 and 6) so 2/6
Now multiply: 1/2 * 2/6 = 2/12 = 1/6
1/6 is the final answer.