Answer:
The angle: 
The supplement: 
Step-by-step explanation:
By definition, if the sum of two angles is 180 degrees, then this angles are called "Supplementary Angles".
Let be:
the angle (in degrees) and
its suppplement (in degrees).
Therefore, you can write the following equation in order to find the angle and its supplement:

Now, you must solve for "x". Then:

Then:
Answer:
1.40
Step-by-step explanation:
Last week, the price of oranges at the farmers market was 1.75
This week, the price has reduced by 20%
20% of 1.75 = 0.2 × 1.75 = 0.35
The price of the oranges this week is 1.75 - 0.35 = 1.40