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Andrej [43]
2 years ago
13

There are 15 coins, which are nickels and dimes only, in Ediths purse. The total value of the coins in her purse is $1.15. If n=

nickels and d= dimes, the scenario can be represented by the following system: n + d = 15 0.05n + 0.10d= 1.15
How many Nickels and dimes are in Ediths purse? (SHOW WORK WILL GIVE 100 POINTS ANSWER ASAP PLS)
Mathematics
1 answer:
Goshia [24]2 years ago
5 0

Answer:

n=7 d=8

Step-by-step explanation:

n+d=15 d=15-n

0.05n+0.1(15-n)=1.15

0.05n-0.1n+1.5=1.15

-0.05n=-0.35

n=7 d=8

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Answer:

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So I defined "x" as the variable to represent the ice's thickness. And since we want an inequality for all the safe thicknesses, we could say that "x" must be greater than or equal to 4 inches thick in order to safely walk on it.

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3 years ago
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Montano1993 [528]

Answer:

4. D  

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Step-by-step explanation:

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D. I had to divide by 4 on both sides to get d by itself. 32/4=8 so final answer would be d=8.

5 0
3 years ago
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