(40 - x) represents A. the number of undamaged cards
Step-by-step explanation:
Step 1; Maria has a total of 40 cards out of which x number of cards are damaged so 40 - x cards are undamaged. The value of an undamaged card is 5 dollars whereas every damaged card has a value of 3 dollars.
Step 2; We need to determine what each term in equation 5(40−x)+3x represents. The equation will give us how much total value Maria's card collection has.
The first term 5 (40 - x) signifies the total value of the undamaged cards in the deck where (40 - x) equals the total number of undamaged cards.
The second term represents the total value of the undamaged cards.
So the second factor of the first term i.e (40 - x) represents the amount of undamaged cards in her collection.
Answer:
x = -9
Step-by-step explanation:
-5 = - 2
add 2 to both sides:
= -3
multiply both sides by 3:
x = -9
Answer:
d = -1/5c + b
Step-by-step explanation:
1/b - 1/d = 5c
- 1/d = 5c - 1/b
1/d = -5c + 1/b
d = -1/5c + b