Answer:
75
Step-by-step explanation:
The measure of two supplementary angles = 15:21
The angles are 15x , 21x
15x + 21x = 180 {Supplementary}
36x = 180
x = 180/36
x = 5
Smallest angle = 15 * 5 = 75
The answer is math+math=math
Positive 28 because to negative will equal a positive number
100$ because the income you have to earn is 400$, right? If so then 100 * 4 give you 400.