Answer:
50 degrees
Step-by-step explanation:
we know that
If two angles are complementary, then their sum is equal to 90 degrees
so
A+B=90°
we have
A=40°
substitute and solve for B
40°+B=90°
B=90°-40°=50°
If angle A and angle B are complementary, that would mean that their sum is 90 degrees. A + B = 90 . We know that angle A is 40, so 40 + B = 90. It becomes a one step equation. Subtract both sides by 40. 90 - 40 = 50. Angle B is equal to 50 degrees.
The answer will be 0.45%
if right plz mark as brainliest
C=2.50m+20
i believe it's 20%
girls: 3
boys: 2
ratio: 3:2
so, 20%