MK100
27.01.2021 •
Mathematics
adrian works in new york city and makes 30 per hour she works in a office and must get her suit dry cleaned every day forb 40. If she wants to make more than 260 a day, st least how many hours must she work
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Ответ:
n=7+9t
Step-by-step explanation:
Use variable expressions to represent the number of each type of coin.
Multiply the number times the value to get the total value of each type of coin. In this problem you cannot count each type of coin—that is what you are looking for—but you have a clue. There are nine more nickels than dimes. The number of nickels is nine more than the number of dimes.
Let d = number of dimes.
d + 9 = number of nickels
Fill in the “number” column to help get .