Answer:
Sale Price = $34.8 (answer). This means the cost of the item to you is $34.8. You will pay $34.8 for a item with original price of $43.50 when discounted 20%. In this example, if you buy an item at $43.50 with 20% discount, you will pay 43.50 - 8.7 = 34.8 dollars.
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For this, we will be using dimensional analysis as such:

In short, 24,900 miles is 40,072,665.6 (40,072,666 if rounded to the whole meter) meters.
Answer:
b
Step-by-step explanation:
Distribute parenthesis and collect like terms, noting that the second parenthesis is distributed by - 1
(4x² - 8xy +2y²) - (9x² - 4xy - 7y²)
= 4x² - 8xy + 2y² - 9x² + 4xy + 7y² ← collect like terms
= (4x² - 9x²) + (- 8xy + 4xy) + (2y² + 7y²)
= - 5x² - 4xy + 9y² → b
Answer:
Step-by-step explanation:
The angles of a quadrilateral have to add up to equal 360. That means that
1x + 2x + 3x + 4x = 360 and
10x = 360 so
x = 36. Then
2x = 72 and
3x = 108 and
4x = 144
Angle A and angle D are opposite angles, as are angles B and C. This is because opposite angles are supplementary.