Can somebody plz help answer all these questions correctly WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST. :DDD

17. 42

18. 12

19. 12

20. 12

Step-by-step explanation:

Simply substitute the given values into the variables. So if m = 6 and n = 2:

7m = 7(6) = 42

6n = 6(2) = 12

mn = (6)(2) = 12

3m - 6 = 3(6) - 6 = 18 - 6 = 12

7x6=42 , 6x2=12, 6x2=12, 3x6-6= 12

Step-by-step explanation:

I am sorry if I am wrong because its 1am for me and i'm tired but i'm pretty sure its correct. i'm a 7th grader lol.

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer