Let d and q be the number of dimes and quarters respectively.
10 cents* d+ 25 cents* q = 620 cents ($6.20 = 620 cents)
⇒ 10d + 25q = 620 (1)
On the other hand, we have: d+ q= 32 (coins) (2)
From (1) and (2), we solve the set of equations.
The final answer is d= 12 coins and q= 20 coins.
The answer is A
Explanation
Answer:
width = 7 cm
Step-by-step explanation:
63 / 9 = 7
Therefore, 7 * 9 = 63cm cube
Answer: c
Step-by-step explanation: