Answer:
angle = 67°
Step-by-step explanation:
let
a = angle in degrees
(90-a) = complement
given
a = 2(90-a)+21
Solve for a
a = 180 - 2a + 21
3a = 201
a = 67°
20 gallons
Answer:22
Step-by-step explanation:22
98
98 because 16 x 3 is 48 x 2 is 98