Since it's harder to write on a phone,i'll take a picture:
Answer:
52
Step-by-step explanation:
Let "a" represent the number of adult tickets sold. Then revenue was ...
9.40a +5.40(151 -a) = $1023.40
4.00a + 815.40 = 1023.40
a = (1023.40 -815.40)/4.00 = 208/4 . . . . . subtract 815.40, divide by 4
a = 52
52 adult tickets were sold that day.
$27.55
29.95 x 8% (aka .08) = 2.396
29.95- 2.396 = 27.55
Complementary angles are 90°
90° - 46° = 44°
Angle 4 is 44°
Over a long period of time. Any given species has to reproduce multiple times and allow time for defects/deformations etc to happen so that the species can diversify itself. It takes years, decades, even centuries to notice genetic changes in species.