Answer:
70 + (-30) + 2 + (-9) + 0.3 + (-0.1) = [70 + (-30)] + [2 + (-9)] + [0.3 + (-0.1)] explanation:
Exact answer
You might know this property of parallelogram that "<span>Consecutive angles are supplementary" i.e A + D = 180. So 6x + 20 + 4x + 10 = 180. 10x = 150. x= 15. Therefore </span>∠A = 6x + 20 = 6( 15) + 20 = 110°. so option C is correct.
5n-4=11
1/2n+15=20
4n+8=12
unless those _ are supposed to be negative signs
then it would be
1/2n+15=-20
and 4n+8=-12
You already wrote it as an improper fraction. The mixed number is 7 1/8.
