Answer:
50
Step-by-step explanation:
The total angle of a triangle is 180
so add 77 and 53 to find out what you have so far
77 + 53 = 130
then you need to find the difference which you do by subtracting
180 - 130 = 50
so x = 50
50°
all triangles = 180°
add 53 + 77 = 130
subtract 180 - 130 = 50
giving you your answer of 50°
G(x) = - x^2 + 10x
a + G(a) = a - a^2 + 10a = - a^2 + 11a or 11a - a^2 or a(11 - a)
1/G(a) = 1/(10a - a^2) = 1/a(10 - a)
Answer:c
