Answer:
78
Step-by-step explanation:
Solve by PEMDAS.
Parentheses first.
12-5 is 7 and 9x6 is 54, 83-54 is 29.
(7)^2+(29)
Exponent next,
49+29
add them up and you get 78.
Hope this helps! Hit the crown if you want.
#Team Rainbows!
Answer:

Step-by-step explanation:
We can find the side of the hypotenuse by applying pythagorean theorem.




Now we can apply pythagorean theorem on the other triangle





Answer:
Area of each sector=
Step-by-step explanation:
We are given that
Length of each wooden od that connects the center of the fan to its edge ,r=12 cm
Total number of sectors=18
We have to find the approximate area of each sector.
Area of semi-circle=
Using the formula
Area of fan=
Area of each sector=
Area of each sector=
Where 
Area of each sector=
It's 243 because all you have to do is 3x3 which is 9 then do 3x3x3 which is 27. once you've got those two terms you multiply the two terms together which will give you a total of 243
<em>n = 4</em>
- <em>Step-by-step explanation:</em>
<em>Hi there !</em>
<em>²⁾2n + n/2 = ²⁾10</em>
<em>4n + n = 20</em>
<em>5n = 20</em>
<em>n = 20 : 5</em>
<em>n = 4</em>
<em>Good luck !</em>