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rodikova [14]
3 years ago
11

Which is a prime number? A. 39 B. 49 C. 81 D. 89

Mathematics
2 answers:
Alexus [3.1K]3 years ago
5 0
D: 89 is the prime number.
nataly862011 [7]3 years ago
5 0
The prime numbers include: <span>2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107 etc. 

The correct answer is D. 89</span>
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~~~15 POINTS~~~
REY [17]
Let's call bicycles 'b' and unicycles 'u'
Note that bicycles have 2 tires, and unicycles have 1 tire.

We can make two equations:

b = u + 8
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Solving the first equation for u, we get:

u = b - 8

Plug that equation into the second, and we get:

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Subtract 2b on both sides.

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Basically, I used b and your question used n.

The correct answer is: D. 1(n - 8) = 46 - 2n.
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