The height h above the roadway of the main cable of the Golden Gate Bridge can be modeled by the function h(x) = 1/9000x^2-7/15x+500, where x is the distance in feet from the left tower.

a. Complete the square, and write the function in vertex form.

b. What is the vertex, and what does it represent?

c. The left and right towers have the same height. What is the distance between them?

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

kaahe btau

6 adults and 9 children went.

a + c = 15

12a + 9c = 153

12(6) + 9(9) = 153

72 + 81 = 153