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max2010maxim [7]
3 years ago
7

I dont know how to answer this 19=n/3-8

Mathematics
1 answer:
noname [10]3 years ago
4 0

Answer:

n = 81

Step-by-step explanation:

Isolate the variable, n. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. First add, then multiply:

Add 8 to both sides:

19 = (n/3) - 8

19 (+8) = (n/3) - 8 (+8)

19 + 8 = n/3

n/3 = 27

Isolate the variable, n. Multiply 3 to both sides:

(n/3)(3) = (27)(3)

n = 27 * 3

n = 81

n = 81 is your answer.

~

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Answer:

The best thing to do here is to put each of these into fractions, with the total (31) as the denominator.

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As you're looking for the keys that are silver or copper, you've got to add the two denominators together, which gives you 14+8= 22.

This cannot be simplified further, therefore, the probability of choosing either a silver or copper key is 22/31.

Hope this answer helps you :)

Have a great day

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