Which expression is equivalent to 30(1/2 x -2) + 40(3/4y -4)? 45xy - 220
15x - 30y - 220
15x + 30y - 220
15x + 30y - 64

15x +30y-64

Step-by-step explanation:

I know I'm dum sometimes

45xy-220. Hope you get this. Mark brainliest if helped you.

we know that

applying the law of sines

°

so

∠j=18°

∠k=29°

∠l=180-(18+29)=133°

the answer part a) is

the measure of angle k is  ≈29°

part b)  the measure of angle k could also be

(180-29)=151°

so

∠j=18°

∠k=151°

∠l=180-(18+151)=11°

the answer part b) is

the measure of angle k could also be 151°

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