tbiles99
02.07.2019 •
Mathematics
Katie gave melanie $2.45 in dimes and nickels. if 10 coins were dimes how many coins were nickels? which equation models this problem? a. 2.45 • 10 - 5n b. 0.05n + 2.45d = 10 c. 10 • 0.10 + 0.05n = 2.45 d. 0.05 • 10 + 0.1 • d = 2.45
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Ответ:
C. 10 • 0.10 + 0.05n = 2.45
Step-by-step explanation:
Let n be the number nickels and d be the number of dimes,
Since, 1 nickel = $ 0.05,
1 dime = $ 0.10,
Thus, the total value of n nickels and d dimes = 0.05n + 0.10d
According to the question,
0.05n + 0.10d = 2.45 ----(1)
d = 10 ----(2)
From the above equation,
Hence, OPTION C is correct.
Ответ:
C. Applying for several lines of credit in a short period of time can help boost a person's credit score.