What is the missing numerator? Four fifths minus blank over nine equals six forty fifths
A) 7
B) 6
C) 5
D) 4

6

Step-by-step explanation:

(4/5)-(x/9)=6/45

6/45=(6/3)/(45/3)=2/15

4/5-(x/9)=2/15

(4/5)-(2/15)=(x/9)

(4*3)/(5*3) = 12/15

12/15-2/15=10/15

10/15=2/3

2/3=6/9

if the probability is 1/12, 75 people will receive a $25 gift card

step-by-step explanation:

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.