I really need help finding these angles because I don’t understand

Every time we have a transversal crossing parallel lines we get eight angles. Each is either congruent or supplementary to any of the other seven, there are only two angle measures in play.

Here we have two transversals, so each has two angle measures.   That doesn't count where the two transversals cross; we'll do those last.

On line a we see a 39° angle.  Let's do that first.

39°: ∠13 ∠6 ∠5

It's supplement is 180°-39°=141°

141°: ∠14 ∠12 ∠7 ∠4

Line b has a 74° angle

74°: ∠3 ∠15 ∠18

Supplement:

106°: ∠1 ∠2 ∠16 ∠17

OK, now the middle crossing

∠3 + ∠6 + ∠9 = 180°

74° + 39° + ∠9 = 180°

∠9 = 180° - 74° - 39°

∠9 - ∠11 =  67°

∠8 = ∠10 = 180° - 67° = 113°

i dont know

step-by-step explanation:

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950