Answer:
12.6
Step-by-step explanation:
sorry only first one
Answer:
B. x² - 13x + 42
Step-by-step explanation:
The percent of discount is 70%.
Answer:
-7±3√6
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>The side of the square is w/2, then its area is:</u>
<u>The shaded area is the difference of areas of the rectangle and the square:</u>
<u>This can be simplified:</u>
- 56w - w² = 336
- w² - 56w + 336 = 0