Step-by-step explanation:
sin 46°= a/12.8
a = sin46° * 12.8 = 9.20
cos59°=b/16.8
b = cos59°*16.8 = 8.65
40 because 3+6+12 = 21 and 8+11+21 =40
Answer:
x ≥ -1
Step-by-step explanation:
the red fully circle in -1 show that -1 is include
For the first one it is 5 x10^{8}
and for the second one it is 0.0005 = 5 × 0.0001 = 5 × 10−4
