Can someone help me PLZ WITH THES TWO ABOVE.

a. 100

b. 156

Step-by-step explanation:

a.

(n - 2)180 = (6 - 2)180 = 4(180) = 720

? + 166 + 108 + 121 + 135 + 90 = 720

? = 100

b.

(n - 2)180 = (8 - 2)180 = 6(180) = 1080

? + 128 + 99 + 161 + 113 + 142 + 146 + 135 = 1080

? = 156

Step-by-step explanation:

No solutionsmeans the lines are parallel...means ur 2 equations have to have the same slope but different y intercepts

y = 2x + 4 and y = 2x + 3

Infinite solutions...means u have the same line

y = 2x + 4 and 2y = 4x + 8notice how if u reduce the 2nd one by dividing everything by 2 u get y = 2x + 4...same line

1 solutionmeans ur equations will have different slopes and different y intercepts.

y = 2x + 4 and y = 4x + 2

now, u can pick which one u want :)