Step-by-step explanation:

m(2nr) = r-s
2×n×r×m = r-s
move the r on the right side to the left side
2nrm - r = -s
r ( 2nm - 1 ) = -s

The missing angle is 32°.
The blanks are as follows:
- Angle addition postulate
- Subtraction property of equality
- Corresponding sides of similar triangles are proportional
- Multiplication property of equality
Answer:
4:5
Step-by-step explanation:
Ratio compares two values. The ratio of nickels to pennies is:
