PLEASE HELP I don’t understand this

m-1 = 142 degrees

m-2 = 38 degrees

m-3 = 142 degrees

m-4 = 38 degrees

m-5 = 38 degrees

m-6 = 142 degrees

m-7 = 38 degrees

m-8 = 142 degrees

hope this helps :))

Step-by-step explanation:

m-1 is 142 degrees because m-6 is also 142 and if you look there the same just on the other sides of each other .

to find m-2 and m-5 you would have to multiply 142 by 2 which is 284. since the whole thing would equal 360, you would have to subtract 284 from 360

360 - 284 = 76

then you would have to divide that by 2 since angle m-2 and m-5 are the same and that would get us 38 so m-2 and m-5 are both 38 degrees.

m-8 is the same as m-6 and m-1

so basically the bottom angles are the same as the top ones .

starting with:    

5 + x - 12 = 2x - 7   

5 + x - 12 - x = 2x - 7 - x (subtract x from both sides)   

5 - 12 = x - 7 (combine and cancel x's from both sides)   

5 - 12 + 7 = x - 7 + 7 (add 7 to both sides)   

0 = x (add numbers together on both sides)       

so in order for the equation to be true, x must be 0.   

trying x = -0.5   

5 + x - 12 = 2x - 7 (original equation)   

5 + -0.5 - 12 = 2(-0.5) - 7 (plug in value of x)   

5 + -0.5 - 12 = -1 - 7 (did multiplication)   

-7.5 = -8 (did addition on both sides)       

since -7.5 is obviously not equal to -8, the value of -0.5 for x is wrong.   

trying x = 0   

5 + x - 12 = 2x - 7 (original equation)   

5 + 0 - 12 = 2(0) - 7 (plug in value of x)   

5 + 0 - 12 = 0 - 7 (did multiplication)   

-7 = -7 (did addition on both sides)       

since -7 equals -7, that demonstrates that the value of 0 for x is correct.   

trying x = 1   

5 + x - 12 = 2x - 7 (original equation)   

5 + 1 - 12 = 2(1) - 7 (plug in value of x)   

5 + 1 - 12 = 2 - 7 (did multiplication)   

-6 = -5 (did addition on both sides)       

since -6 is obviously not equal to -5, the value of 1 for x is wrong.