Answer:
65
Step-by-step explanation:
All the angles in a right triangle add up to 180
plug in what we know and we get
90+25+x=180
115+x=180
x=65
40+2+1(6+n)
This shows forty plus 2, then 1 times six plus 1 times n.
You can add 2by² - x to get
2by² = a - x
Then divide by the coefficient of y²
y² = (a - x)/(2b)
Now take the square root.
y = √((a - x)/(2b))
This can be "simplified" to
y = (√(2b(a - x)))/(2b)
