Solve the following inequality algebraically. ∣x−9∣≥4

Step-by-step explanation:

So we have the inequality:

Definition of Absolute Value. Since this is "greater than," we need to use "or."

Also, note that we flip the inequality on the second equation because we multiplied by a negative.

Add 9 to both equations:

And that's our solution.

And we're done!

answer: y=4000x+14000

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.