What is (f + g)(x)?
f(x) = -2x^2
g(x) = -2x^2 + 9x

-4x^2+9x

Step-by-step explanation:

Adding boh gives

(f+g)(x)=-2x^2+(-2x^2+9x)

=-2x^2-2x^2+9x

=-4x^2+9x

To find the other side lengths, you must know what triangle it is  in this case, it is a 45 - 45 - 90 triangle, with sides that measure 1, 1,  √2. in this case, the hypotenuse (√2) is 22divide 22 with  √2 to find the (1) sides. note that  √2 = 1.41 (rounded)22/1.41 = 15.60 (rounded)you're hypotenuse should be  15.60hope this