Answer:
Step-by-step explanation:
18
5
3*5=15
15+3=18
and
6*5=30
30-12=18
99 cm²
1/2 BH
1/2 18 x 11
9 x 11
99
1st option because those angles are a linear pair.
-5/7 x 1/5
-5 x 1 = -5
7 x 5 = 35
-5/35 = -1/7
Happy to help :P
im am in grade 6
sorry......... i apologize.