Answer:
The answer is 12 I believe
Step-by-step explanation:
You just want to add all the numbers you already have and subtract that with your perimeter to get 12. So 7+15+16=38; 50-38=12.
Add 22 to the other number and you will get 43
Answer:
24.4 feet
Explanation:
Let x be the length of the wooden board as shown in the diagram.
Using trigonometry ratio, we can write


cross multiplying we get:

Diving through by 0.819, we obtain

To the nearest tenth, x=24.4 feet.
So, first, we know that the whole angle must equal 90 because there's a right angle symbol, and right angles equal 90 degrees.
So, 43 + x + 3 must equal 90.
Or, 46 + x = 90
Then subtract 46 from both sides.
x = 90 - 46
x = 44
These would also be adjacent angles because they share the same vertex.