A) x and y are two numbers taken from the list below. 5, 6, 7, 8, 9 and 10

(i) What values of x and y will make 3x - 2y equal zero? x =

y=

(ii) Work out the greatest possible value of 3x - 2y.

(iii) Work out the least possible value of 3x - 2y.

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.