Answer:
r = 13
Step-by-step explanation:
these angles are vertical and are congruent
8r + 6 = 9r - 7
6 = r - 7
13 = r
Answer:
135 x 10^7
Step-by-step explanation:
27(5 x 10^7)
probably check before turning in
Answer: 4,032
Step-by-step explanation:
8,4 x 0,48 = 4,032