Answer:
m∡A = 41.4°
m∡B = 48.6°
m∡C = 90°
a = 3
b = 9
c = 12
Step-by-step explanation:
to find the length of side 'a' I used the Pythagorean Theorem to get:
a² + 9² = 12²
a² + 81 = 144
a² = 63
a =
which equals 
which is 3
to find m∡B I found the arcsin(B) = 9/12 to get 48.6
to find m∡A I subtracted the sum of 90 + 48.6 from 180°
Answer:
13
Step-by-step explanation:
20÷1.5 since there is not X
10min + 35min = 45min
Lester left 45min before 10:45AM
he left at 10AM
Let units cancel out just like numbers...
25365.4cm^3(2.7g/cm^3)=68486.58g which is 68486.6g (to nearest tenth)