Answer:
40.47°, 49.53°
Step-by-step explanation:
Complementary angles add up to 90
7r + 5 + 8r + 9 = 90
15r + 14 = 90
15r = 76
r = 76/15
7r + 5 = 7(76/15) + 5 = 40 7/15
8r + 9 = 8(76/15) + 9 = 49 8/15
Use demos or a graphing calc.
Answer: $899.50
10n -10
5n * 2n = 10n
-5 * 2 = -10
-10 + 10n = 10n - 10
1
1 times 1 times 1 = 1
